WO2020217842A1 - ナノ構造基板 - Google Patents
ナノ構造基板 Download PDFInfo
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- WO2020217842A1 WO2020217842A1 PCT/JP2020/013701 JP2020013701W WO2020217842A1 WO 2020217842 A1 WO2020217842 A1 WO 2020217842A1 JP 2020013701 W JP2020013701 W JP 2020013701W WO 2020217842 A1 WO2020217842 A1 WO 2020217842A1
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- metal
- fine particles
- coating layer
- gold
- substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82B—NANOSTRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
- B82B1/00—Nanostructures formed by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/42—Coating with noble metals
- C23C18/44—Coating with noble metals using reducing agents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/65—Raman scattering
- G01N21/658—Raman scattering enhancement Raman, e.g. surface plasmons
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
- C23C18/1824—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces by chemical pretreatment
- C23C18/1837—Multistep pretreatment
- C23C18/1844—Multistep pretreatment with use of organic or inorganic compounds other than metals, first
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/42—Coating with noble metals
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/52—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating using reducing agents for coating with metallic material not provided for in a single one of groups C23C18/32 - C23C18/50
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
- G01N21/552—Attenuated total reflection
- G01N21/553—Attenuated total reflection and using surface plasmons
- G01N21/554—Attenuated total reflection and using surface plasmons detecting the surface plasmon resonance of nanostructured metals, e.g. localised surface plasmon resonance
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/008—Surface plasmon devices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B2207/00—Coding scheme for general features or characteristics of optical elements and systems of subclass G02B, but not including elements and systems which would be classified in G02B6/00 and subgroups
- G02B2207/101—Nanooptics
Definitions
- the present invention is a nanostructure substrate that utilizes the cohesive polarization action and / or electromagnetic polarization action of precipitated metal, for example, a nanostructure that can be applied to various devices that utilize localized surface plasmon resonance (hereinafter collectively referred to as plasmon). Regarding the substrate.
- plasmon localized surface plasmon resonance
- the metal particles When the metal particles are miniaturized to a size of several tens of nm, which is less than 100 nm, functions not found in bulk metals are exhibited. For example, a group of metal fine particles reduced from an aqueous solution has a strong cohesive force even in an aqueous solution. For this reason, it is known that the cohesive polarization action acts between the fine particles, and the metal fine particles stick to each other.
- plasmons of the gold fine particle group are known to generate a strong absorption band in the visible light region. This plasmon is said to be the resonance vibration of free electrons in nanoparticles induced by incident light.
- plasmons made of nanostructured substrates have been applied to electronics, decoration and medical applications, and have been applied to organic electroluminescence devices, inorganic electroluminescence devices, inorganic LED devices, photoelectric conversion devices (solar cell devices), biosensors, light emitting lasers, etc. It is expected to be applied to a wide range of devices such as color filters for LCDs.
- the metal fine particle group is generally fixed to a support from the viewpoints of material handleability, stability, diversity of application fields, and the like. So far, aggregates of gold fine particles and nanostructured substrates that have been wet-reduced, modified, and immobilized by various methods have been proposed.
- Patent Document 1 states that "a metal colloid ultrafine particle having a particle size of 10 nm or less dispersed in a dispersion medium is used as a nucleus, and a reduction method is applied to the surface of the nucleus.
- a metal fine particle dispersion liquid containing metal colloidal fine particles having an average particle size of a predetermined size in which metal is precipitated by the above is disclosed.
- Claim 3 of the same publication is characterized in that "a dispersant is contained in the dispersion liquid, and the dispersant is at least one selected from alkylamines, carboxylic acid amides and aminocarboxylic acid salts.
- the invention of "the metal fine particle dispersion liquid described in 1" is disclosed, and specific examples and contents of alkylamines and the like are described in paragraphs 0016 to 0018 of the same publication.
- claim 1 of JP2013-10884A includes "a matrix resin and a plurality of metal fine particles fixed to the matrix resin, and at least a part of the metal fine particles is a metal fine particle.
- a metal fine particle composite having a portion embedded in the matrix resin and a portion protruding outward from the surface of the matrix resin, and further comprising a metal film covering the protruding portion.
- the invention of the present invention is disclosed, and claim 7 includes “the following steps A to C: A) a matrix resin and a plurality of metal fine particles fixed to the matrix resin, and at least a part of the metal fine particles is the above.
- a metal fine particle composite comprising a step of forming a plating film covering a protruding portion, C) a step of heat-treating the above plating film and changing its shape into a metal film having a diameter smaller than that of the plating film to obtain a metal fine particle composite.
- Patent Document 2 The invention disclosed in claim 1 of JP2013-10884A (Patent Document 2 described later) is intended to be used for applications such as a sensor using a metal fine particle composite dispersed only on the surface of a matrix resin (Patent Document 2 described later). 0012 to 0014) of the same gazette.
- the electromagnetic wave is irradiated from the back side, the metal fine particles embedded in the matrix resin are also affected. Therefore, in the present invention, electromagnetic waves are irradiated from the surface side of the matrix resin.
- JP2013-177665A Patent Document 3 described later
- the metal particles have an average particle size in the range of 200 to 1600 nm, an average height in the range of 55 to 500 nm, and an aspect ratio defined by the ratio of the average particle size to the average height of 1 to 8.
- the above-mentioned metal-based particles are arranged so that the average distance from the adjacent metal-based particles is in the range of 1 to 150 nm "is disclosed.”
- Example 1 paragraph 0079 of the same publication, "using a DC magnetron sputtering apparatus, silver particles are grown extremely slowly on a soda glass substrate under the following conditions, and metallic particles are formed on the entire surface of the substrate. A thin film of the aggregate was formed to obtain a metal-based particle aggregate layer laminated substrate.
- this metal-based particle aggregate layer includes a particle group in which a plurality of metal-based particles are aggregated. When such a particle group is irradiated with an electromagnetic wave from the back side, a high temperature region called a hot spot may be generated unevenly even inside such a particle group. Therefore, even in this invention, electromagnetic waves are irradiated from the surface side of the matrix resin.
- JP2015-163845 states that "a conductive member, an immobilization layer formed on one surface of the conductive member, and one surface of the immobilization layer are arranged.
- a surface-enhanced Raman spectrum substrate having a plurality of nanoparticles and capable of enhancing Raman scattering by a high electromagnetic field from each nanoparticles, wherein the nanoparticles have a particle size of 1 to 100 nm.
- the nanoparticles are arranged in a grid pattern and at equal intervals, the spacing between adjacent nanoparticles is less than or equal to the above particle size, and the localized surface plasmons of each nanoparticles can resonate with external light.
- a surface-enhanced Raman spectrum substrate which is characterized by the above, is disclosed.
- the inset in FIG. 8 of the same publication describes that "gold fine particles having a particle size of about 10 nm were previously modified with dodecane thiol molecules" according to paragraph 0067 of the same publication. Further, according to paragraph 0073 of the same publication, it is described as "an SEM image of a surface-enhanced Raman spectrum substrate of a gold fine particle array (10 Dod 2D array) having a particle size of 10 nm in Example 1- # 1.” As is clear from the inset of FIG. 8, the particle group is scattered in the gold fine particle arrangement. Further, this gold fine particle array has a problem of generating a non-uniform local heating field (hot spot) like the gold nanoblock two-dimensional array structure shown in FIG. 19 against an electromagnetic field incident from the surface side. ..
- An object of the present invention is to provide a nanostructured substrate composed of a group of composite particles having a cohesive polarization action and / or an electromagnetic polarization action.
- Another object of the present invention is to provide a nanostructured substrate in which the medium reacts homogeneously over the entire nanostructured substrate by dramatically increasing the number of active sites having such high cohesive force.
- Another object of the present invention is to provide a nanostructured substrate capable of easily determining the optimum reaction conditions of a medium.
- the present invention has the following configurations. (1) In a nanostructured substrate having front and back surfaces composed of a metal structure composed of a composite particle group and a substrate composed of a resin substrate and a support, the geometric surface surface on the front surface side of the composite particle group is the back surface side.
- the composite particle is composed of fine particles such as metal and a coating layer of a metal or an eutectoid whose upper portion is reduced and precipitated, and the lower portion of the fine particles such as metal is embedded in a resin substrate.
- a nanostructured substrate characterized in that fine particles such as metals embedded therein are separated from each other.
- the electromagnetic polarization action of the present invention is outlined as follows. That is, electromagnetic waves or electric fields incident from the back surface side are concentrated on the protrusions (roots of mushrooms) on the front surface of the metal fine particle groups arranged in a plane on the back surface side of the nanostructured substrate. The electromagnetic waves concentrated on these protrusions propagate through the connected composite particle group, and eventually the homogenized internal energy is evenly emitted from the coating layer (mushroom cap) of the composite particle group to the surface side of the nanostructured substrate. .. Furthermore, a mild reaction can be promoted by simultaneously exerting the agglutinating polarization action of the coating layer on the place where the electromagnetic polarization action of the nanostructured substrate is working.
- fine particles such as metals are self-assembled. That is, the individual fine particles such as metals are insulated from each other and are non-conductive with the adjacent metal particles.
- the reduction-precipitated coating layer is conductive. This is because the geometric surface area on the surface side of the composite particle group in the nanostructured substrate is continuously reduced in the outward direction to suppress the occurrence of local overheating.
- fine particles such as metals are self-assembled in order to align the fine particles such as metals at horizontal intervals.
- the reason for the interval is to uniformly induce the electromagnetic wave to enter the fine particles such as metal.
- the incident light is natural light, a polarized wave of linearly polarized light or circularly polarized wave, or a special wave such as a laser wave or pulse wave, an electromagnetic wave in a certain region is emitted to one place of fine particles such as metal. This is because it can be aggregated into.
- the shape of the fine particles such as metal may be various geometric shapes such as a sphere, a long sphere, a cube, a truncated tetrahedron, a digonal pyramid, a regular octahedron, a regular octopus, and a regular icosahedron.
- the appearance of the immobilized fine particles such as metal is hemispherical.
- the average particle size of the fine particle group such as metal is preferably 10 to 90 nm. This is because if it is less than 10 nm, the aspect ratio of the composite particle group will not be sufficient. In this case, the site of the resin substrate other than the fine particle group such as metal may become a precipitation nucleus. When the site of the resin substrate becomes a precipitation nucleus, the precipitation particle group is not precipitated on the fine particle group such as metal, and the quality of the nanostructured substrate tends to be unstable.
- the lower limit of the average particle size of the fine particle group such as metal is preferably 10 nm or more. More preferably, it is 15 nm or more.
- the upper limit of the fine particle group such as metal is preferably 90 nm or less. It is more preferably 60 nm or less, still more preferably 50 nm or less. It is particularly preferably 40 nm or less.
- the fine particles such as metal are arranged at intervals in the horizontal direction, it is possible to form the fine particles such as metal which are arranged at intervals in the horizontal direction by an inkjet or a 3D printer.
- such fine particle groups such as metals can be formed in advance by dry plating such as vacuum deposition.
- the substrate can be provided with V-grooves and recessed dents so that fine particles such as metals can be aligned.
- the fine particle group such as metal is self-assembled. If an appropriate dispersant is added at the time of chemical reduction, fine particles such as metals are dispersed in the solution without agglomeration. Such fine particles such as metals are separated from each other on the resin substrate and self-assemble in a plane lattice pattern. It is particularly preferable to reduce the metal-containing fine particles from the metal-containing aqueous solution with a reducing agent, and at the same time, self-assemble the reduced metal fine particles. Because it is the most economical.
- the fine particle group such as metal becomes a precipitation nucleus of the coating layer to be reduced and precipitated. Therefore, a 1: 1 relationship is maintained between the fine particle group such as metal and the coating layer. In order to strengthen this relationship, it is preferable that the fine particle group such as metal and the coating layer are the same type of metal. More preferably, a group of fine particles such as metals is reduced and precipitated from an aqueous solution.
- the coating layer is precipitated on the fine particle group such as metal in order to utilize the action of the cohesive force of the coating layer for the gentle reaction and heating of the medium. Further, this is to utilize the action of electromagnetic waves alone or in combination.
- the coating layer of the precipitated particles group in which metal ions in the solution are reduced to metal has a strong reducing action.
- Methods for precipitating metal from an aqueous solution include substitution plating, reduction plating, and electroless plating. Electroless plating that precipitates autocatalytically is preferable. Even if the height of the coating layer is uneven, the energy such as electromagnetic waves is evenly distributed because the fine particles such as metals are arranged in a plane. That is, the nanostructured substrate of the present invention can control the polarization action due to cohesive force (aggregate polarization action) by the polarization action due to electromagnetic waves or the like (electromagnetic polarization action).
- the reason why the coating layer on the fine particle group such as metal becomes uneven can be understood as follows. That is, even if the metal concentration in the aqueous solution is uniform, there is a difference in the supply rate between the amount of metal ions supplied in the horizontal direction of the xy axis and the amount of metal ions supplied in the z-axis direction. Therefore, the precipitated particles are likely to grow in the z-axis direction. For this reason, the growth rate of the precipitated particles in the horizontal direction of the xy axis surrounded by the precipitated particles becomes slower and slower. That is, the supply rate of metal ions becomes the rate-determining step, and it becomes easy to obtain a coating layer having irregular heights.
- the geometric surface area on the front surface side of the composite particle group is larger than the geometric surface area on the back surface side because energy such as incident electromagnetic waves is evenly distributed and a large area is used. This is to diverge to.
- the coating layer is heat-treated at a temperature higher than the precipitation temperature, the outline of the surface morphology of the coating layer becomes clear. That is, the heat treatment relaxes the crystal strain of the precipitated particles, exposes the crystal plane of the metal lattice, and stabilizes the diverging sites.
- the surface morphology of the coating layer it is preferable that the individual coating layers are connected.
- the individual coating layers By connecting the individual coating layers, a large number of dents are generated on the surface side of the nanostructured substrate.
- it has a geometric surface morphology of a sea-island structure in which these depressions are connected.
- the area of this depression continuously decreases as it approaches the surface of the resin substrate. Therefore, the cohesive polarization action and / or the electromagnetic polarization action becomes continuously strong in the depression. That is, these media can be autonomously brought into contact with the coating layer at a reaction distance optimal for the length of the medium of gas molecules, liquid molecules, or solid molecules.
- the surface morphology of the coating layer is more preferably a sea-island structure.
- the sea-island structure several precipitated particles are connected to form an island.
- the sea part becomes a path for metal ions supplied in the horizontal direction of the xy axis. Since the geometric surface area on the front surface side of the composite particle group is larger than the geometric surface area on the back surface side, the variation due to heat generation from the surface morphology of the individual precipitated particles is reduced.
- the surface morphology of the coating layer disappears from the sea-island structure and becomes a flat normal plating film. That is, when the coating layer has a continuous film similar to that of bulk metal, a large number of polarization actions by the coating layer do not occur.
- the metal of the coating layer is preferably a metal of Group 8 to Group 11 elements having 4 to 6 cycles as a plasmon metal or a heat generating metal. More preferably, it is gold, silver, nickel, palladium or platinum. Gold is particularly preferred.
- the metal can be eutectoid plated. For example, carbon black non-metals, aerosols such as silica, alumina, and titania, silicon carbide, and the like may be co-added to the electroless plating solution.
- the material of the support is preferably an insulating resin or glass that is transparent to visible light.
- the insulating resin include polyimide resin, polyamic acid resin, fluorene resin, polysiloxane resin, polyethylene terephthalate resin, polyphenylene ether resin, epoxy resin, fluororesin, vinyl resin, phenol resin and the like, and ion exchange resin. Can be done.
- This resin material may be made of a single resin, or may be a resin material in which a plurality of resins are mixed and used.
- the support is a colorless and transparent insulator. This is because such a transparent body can irradiate the metal structure from the back surface side of the nanostructured substrate as a pulse wave or in a spot shape. Further, if it is an insulator, the energy due to the electromagnetic polarization action generated in the fine particle group such as metal can be retained inside the metal structure. In particular, in the composite particle group, the polarization action due to the vertical plasmon observed in the nanorod can be generated. (Action of the invention)
- FIG. 1 is a conceptual diagram for explaining the principle of the present invention.
- two metal such as fine particles of a transparent support (M i and M i-1) is fixed to the resin base, two metal such as fine particles (M i and M i-1) is They are insulated from each other.
- the fine particle group such as metals arranged apart from each other in the x-axis direction and the y-axis direction, since the other part of the composite particles is embedded in the resin substrate, the metal or the like is used.
- the fine particle group is two-dimensionally aligned. This alignment is obtained by self-assembling a group of fine particles such as metals ( ⁇ M i , ⁇ M k ) in an aqueous solution using a dispersant.
- the preferred heat treatment temperature is 80-400 ° C.
- the upper limit of the more preferable heat treatment temperature is 300 ° C., and particularly preferably 200 ° C.
- agglomeration polarization occurs due to cohesion on the coating layer To do.
- Strength of polarization on the medium by the aggregation polarization effect is dependent on the distance of the composite particles (M i and M i-1), precipitated particles (M 'i, M' k ) depending on the distance between
- the intensity of polarization changes continuously with exposure.
- the coating layer forms a mortar-shaped depression, the optimum location for the cohesive polarization action is uniquely determined according to the type and size of the medium molecule.
- the electromagnetic wave from the outside is absorbed from the apex of the two metal such as fine particles shown in FIG. 1 (M i and M i-1). Since metals such as fine particles (M i and M i-1) is present apart from one another, an electromagnetic wave such as visible light from the outside is equally incident. Since the speed at which the incident electromagnetic wave flows through the coating layer is faster than the speed at which it is emitted from the coating layer, the entire coating layer is evenly warmed. Then, as shown by the arch-shaped symbol in FIG. 1, energy is released from the surface side of the composite particle group from the mortar-shaped depression or the like.
- Intensity of polarization due to the electromagnetic polarization effects also because it depends on the distance of the composite particles (M i and M i-1), as shown in the arcuate symbols of Figure 1, according to the distance of such cone-shaped recess It changes continuously.
- the geometric surface area of the composite particles on the front surface side is larger than the geometric surface area of the fine particles such as metals on the back surface side, even if the incident electromagnetic waves are pulsed, the emitted electromagnetic waves are emitted. Becomes calm. Therefore, even by the electromagnetic polarization action, a mild reaction can be carried out depending on the type of medium molecule of liquid, gas or solid.
- the agglutinative polarization action and the electromagnetic polarization action have different properties, they act separately on the medium molecule. Further, the two coating layers shown in FIG. 1, that is, the geometric surface area of the surface of the composite particles is larger than the geometric surface area of the rear surface side of the metal such as fine particles (M i and M i-1) Therefore, local hot spots do not occur as in the past.
- the resonance frequency of the composite particle group depending on the wavelength of the external electromagnetic wave differs depending on the type of metal, the surface morphology, the medium, and the like.
- the surface morphology of the coating layer changes from a sea-island structure to an L-shaped block shape. Then, the coating layer of this L-shaped block begins to connect with the precipitated particles of the adjacent island.
- the outer portion of this L-shaped block serves as a path for metal ions supplied in the horizontal direction of the xy axis.
- a mild warming effect or a mild chemical reaction effect can be brought about as a whole of the nanostructured substrate.
- the particle size, distribution density, and area density can be adjusted as appropriate.
- the plasmon effect due to a group of fine particles such as metals and the plasmon effect due to a group of composite particles are generally known.
- the actual nanostructured substrate does not show the optimum plasmon effect for visible light or laser light of 400 nm to 700 nm. Therefore, the heat generation state or plasmon due to the optimum hot spot suitable for the medium by appropriately changing the fine particle group ( ⁇ M i , ⁇ M k ) such as metal, the average particle size and area density of the coating layer, and the sea-island structure of the coating layer It is necessary to determine the type of.
- FIG. 2 shows a group of fine particles such as metals ( ⁇ M i , ⁇ M k ) reduced and precipitated from an aqueous solution fixed on a resin substrate.
- the metal or other fine particle group ( ⁇ M i , ⁇ M k ) is self-assembled by an appropriate dispersant, and the metal or other fine particle group ( ⁇ M i , ⁇ M k ) is arranged on the resin substrate at horizontal intervals. There is.
- This group of fine particles such as metals shows the embedded state before forming the coating layer by wet plating. In this case, the geometric surface area on the front surface side of the composite particle group is equal to the geometric surface area on the back surface side.
- the wet plating on two metal such as fine particles continuously in the x-axis direction (M i-1 and M i).
- grain two metal such as fine particles (M i-1 and M i) as nuclei, x-axis direction, deposited in the y-axis and z-axis directions.
- the particles such as reduced metals and the precipitated particles forming the coating layer are the same metal.
- the individual composite particles are separated from each other. Even in this case, the geometric surface area on the front surface side of the composite particle group is larger than the geometric surface area on the back surface side.
- the coating layer is gradually formed on the metal such nanoparticle cluster (M i-1 and M i).
- the covering layer increases substantially isotropically in the x-axis direction and the y-axis direction to form a sea-island structure.
- the coating layers of adjacent composite particles are connected to form a mortar-shaped depression surrounded by the coating layer. In this case, the geometric surface area on the front surface side of the composite particle group is clearly larger than the geometric surface area on the back surface side.
- the coating layers of most of the composite particle groups are connected in the same horizontal plane. Since the fine particles such as metal are aligned in the horizontal direction, the fine particles such as metal that are not connected do not conduct with each other. That is, in the state shown in FIG. 5, the entire metal structure composed of the composite particle group starts to come into contact with each other through a large number of coating layers at the same time.
- the coating layer having irregular heights is self-adjusted.
- the surface side of the composite particle group becomes a flat ultra-thin plating film. That is, a well-known ultra-thin plating film is formed.
- fine particles such as metal remain separated from each other. In this case, the geometric surface area on the front surface side of the composite particle group is smaller than the geometric surface area on the back surface side.
- the geometric surface area on the back surface side is the total weight obtained by dissolving a group of fine particles such as metals fixed on a resin substrate with a solution, and the average grain of the group of fine metal particles dispersed in the solution. It is a calculated value produced based on the diameter.
- the geometric surface area of the composite particle group on the surface side is the total weight obtained by dissolving the metal layer from the nanostructured substrate in a solution, the average particle size of the metal fine particle group dispersed in the solution, and the like. It is a calculated value produced based on. It does not mean the actual surface area.
- the nanostructured substrate of the present invention preferably contains a large number of mortar-shaped depressions in the metal structure. This is because, as shown by the right arrow of the plasmon resonance in the gap mode of FIG. 6, which will be described later, the plasmon in the gentle longitudinal mode is expressed by this metal structure. Longitudinal mode plasmons are usually plasmons observed in elongated nanoparticles such as nanorods.
- the amount of metal occupied by the composite particle group of the present invention is preferably continuously reduced upward from the resin substrate surface. That is, by forming a large number of mortar-shaped depressions in the metal structure, a mild reaction due to a cohesive polarization action and / or an electromagnetic polarization action is autonomously started at an optimum position suitable for the molecule of the medium. At this time, this void portion becomes a convection flow path of the medium. It is more preferable that a zigzag straight line can be drawn for the irregular island-shaped structure in the sea-island structure.
- the wet-plated metal constituting the coating layer of the present invention is not particularly limited.
- the type of metal can be appropriately selected depending on the medium of gas or liquid to be reacted.
- it is a metal of Group 8 to Group 11 elements having 4 to 6 cycles because of the ease of expression of plasmons.
- metal species such as gold, silver, copper, cobalt, nickel, palladium, platinum, rhodium, and iridium, or alloy plating species thereof can be used.
- the coating layer of the present invention may be a metal exhibiting a strong plasmon effect or a metal having a large resistance value.
- a metal or alloy selected from the group of gold, silver, nickel, palladium and platinum is more preferred. Gold is particularly preferred.
- the above-mentioned metal or alloy can be coagulated and plated with an aerosol of sulfur, phosphorus, carbon black, titanium oxide or the like to obtain the coating layer of the present invention.
- Electroless plating is preferable for wet plating of the coating layer.
- These plating solutions can be used by diluting a commercially available metal plating solution.
- autocatalytic electroless metal plating can granulate a coating layer of a composite particle group at an arbitrary speed.
- Optimal precipitation conditions can be determined by referring to a graph as shown in FIG. In this way, mass production of the nanostructured substrate or the like of the present invention becomes possible.
- the reducing agent in addition to the sugar alcohol group, a well-known group such as citric acid or polysaccharide as exemplified in the prior art can be used.
- the metal-containing solution is chemically reduced with such a reducing agent, the reduced fine particles such as metals can be autonomously self-assembled. That is, the fine particles such as metals are separated from each other and arranged in a plane lattice at an appropriate distance autonomously depending on the type and concentration of the reducing agent.
- Japanese Patent Publication No. 2011-511885 describes an example in which a polysaccharide is used.
- Japanese Patent Application Laid-Open No. 2004-051997 describes an example in which an alkylamine, a carboxylic acid amide or an aminocarboxylic acid salt is used.
- Any of the above compounds can be used in the group of fine particles such as metals of the present invention.
- chemically reduced gold fine particles have various external shapes such as a sphere, an ellipsoid, and a polyhedron. However, even if the shape is different, the gold fine particle group shows plasmon absorption at about 530 nm. The same is true for plasmon absorption by other metals. The absorption wavelength of plasmons depends on the metal species of the coating layer.
- the distance between adjacent nanoparticles is preferably 20 nm or less. More preferably, it is 10 nm or less.
- the strength of plasmons also depends on the particle size and surface density of the coating layer, and seems to depend on the total weight of the composite particle group.
- the metal structure of the present invention is characterized by having many mortar-shaped depressions. Even the metal species of the weak coating layer of plasmons can be applied to various devices by the cohesive polarization action and / or the electromagnetic polarization action.
- the nanostructured substrate of the present invention there is an effect that an autonomous reaction of the medium due to a cohesive polarization action and / or an electromagnetic polarization action can be exhibited everywhere in the coating layer.
- the mortar-shaped depressions are everywhere.
- the medium can be easily exchanged from the opening of the sea-island structure.
- a fresh gas or liquid can be continuously supplied to the reaction site.
- the mortar-shaped recesses can be evenly dispersed. Therefore, according to the nanostructured substrate of the present invention, there is an effect that a gentle catalytic reaction or a chemical reaction can be carried out by a cohesive polarization action and / or an electromagnetic polarization action.
- the nanostructured substrate of the present invention there is an effect that the particle size and the alignment interval of the fine particle group such as metal can be adjusted by a dispersant or the like according to the type of the incident electromagnetic wave. Further, there is an effect that the metal type and surface morphology of the coating layer can be selected according to the use of the nanostructured substrate. By using the optimum nanostructured substrate for the reaction medium, there is an effect that it is not affected by the variation of the fine particle group such as metal and the coating layer.
- the sea-island structure of the nanostructured substrate has the effect of serving as a flow path for the reaction medium. That is, the inflow path and the outflow path of the medium are the same plane in the mortar-shaped depression, but the side wall of the mortar-shaped depression is the inflow path or the outflow path outside the sea island structure or the L-shaped block. For example, even if the mortar-shaped ceiling portion is blocked by large molecules after the reaction, an outflow path is autonomously formed from the mortar-shaped side wall.
- the nanostructured substrate of the present invention has an effect that the mixed gas or the like can be gently catalytically reacted or adsorbed while being passed through the mixed gas or the like.
- the nanostructured substrate of the present invention not only the cohesive polarization action but also the electromagnetic polarization action can be performed together, so that the effect of promoting the chemical reaction of the medium more than ever can be obtained. is there. Further, when the plasmon effect is used, there is an effect that not only the polarization action in the horizontal mode but also the polarization action in the longitudinal mode can be exhibited. According to the nanostructured substrate of the present invention, there is an effect that a labeled compound or the like can be selectively adsorbed on the top of the composite particle group.
- the coating layer can be produced by wet plating, there is an effect that even a large-area substrate can be easily produced. Further, according to the nanostructured substrate of the present invention, there is an effect that mass production can be carried out in a short time and at low cost.
- FIG. 2 a group of gold fine particles having an average particle diameter of 20 nm reduced on a thermosetting transparent resin substrate is fixed on the surface side on a transparent resin support. As shown in FIG. 1, adjacent gold fine particles are separated from each other and are arranged two-dimensionally. Therefore, even if the three gold fine particles continuous in the x-axis direction and the three gold fine particles continuous in the y-axis direction seen in FIG. 2, the cross sections of all the gold fine particle groups shown in FIG. 2 are in the same plane. is there.
- thermosetting resin can be used alone.
- the resin substrate according to this embodiment can be used in combination with another support.
- the support is preferably a transparent body.
- shape of the substrate for example, a plate shape, a sheet shape, a thin film shape, a mesh shape, a geometric pattern shape, an uneven shape, a fibrous shape, a bellows shape, a multilayer shape, a spherical shape or the like can be applied.
- the substrate does not transmit light, it can be used as a sensitivity sensor for detecting external changes.
- a base layer can also be used in combination with the resin substrate.
- glass, ceramics, silicon wafers, semiconductors, paper, metals, alloys, metal oxides, synthetic resins, organic / inorganic composite materials and the like can be used.
- the surface of this base layer is subjected to, for example, silane coupling agent treatment, chemical etching treatment, plasma treatment, alkali treatment, acid treatment, ozone treatment, ultraviolet ray treatment, electrical polishing treatment, polishing treatment with an abrasive, and the like. You can also use what you have done.
- the process of immersing in a dilute wet plating solution for a certain period of time can be repeated for several cycles.
- the metal structure according to the embodiment of the present invention is not limited to the above embodiment, and the metal structure of the present invention can be variously modified and implemented within the scope of the technical idea of the present invention. .. Specific examples of this embodiment will be described in detail in the following examples and the like. However, the present invention is not limited to these examples.
- gold fine particles are arranged at intervals on a transparent polyester resin film. That is, the buried gold fine particles exist apart from each other.
- This structure is a comparative example.
- the geometric surface area on the front surface side of the composite particle group of the comparative example is the same as the geometric surface area on the back surface side.
- the gap between adjacent gold fine particles in the horizontal direction in the gold fine particle group is about 20 nm.
- the transparent substrate on which the gold fine particles were fixed had a light pink color.
- the absorbance was measured in the wavelength range of 400 nm to 900 nm, and the absorption spectrum distribution of gold was observed.
- a fiber multi-channel spectroscope (Flame manufactured by Ocean Optics) was used for the absorbance measurement.
- the absorption spectrum curve of the comparative example is the bottom curve of FIG. Looking at this curve, it can be seen that plasmons peculiar to the gold fine particle group having an absorbance of 0.15 appear in the vicinity of 550 nm.
- Example 1 ⁇ Precipitation of gold coating layer>
- this transparent substrate was immersed in an electroless gold plating solution at 65 ° C. (an improved bath of Precious Fab ACG3000WX manufactured by Nippon Electroplating Engineers Co., Ltd.) for 10 seconds to complete one cycle.
- This step was repeated for 3 cycles to obtain a gold coating layer. That is, gold crystal grains were precipitated on the fixed gold fine particles. This is shown in FIG.
- the diameter of most of the gold fine particle groups increases like mushrooms, and the gold coating layer grows hemispherically when viewed from above.
- the geometric surface area on the front surface side of the composite particle group is larger than the geometric surface area on the back surface side.
- the color of the transparent resin substrate changed from light pink before electroless gold plating to light purple after electroless gold plating.
- the absorption spectrum distribution of gold was observed in the same manner as in the comparative example.
- the second curve from the bottom is the plasmon curve of Example 1.
- the gold composite particle group deviates from the peak value of around 550 nm to the long wavelength side.
- the apparent aspect ratio shifts due to the increase in weight of the gold coating layer. That is, since the heights of the gold composite particles vary, the plasmons of the individual gold coating layers show different peak values.
- This imbalance appears in FIG. 6 as a plasmon shift.
- the shift of plasmons as shown in FIG. 6 is similar to the shift of plasmons by nanorods having a high aspect ratio.
- the absorbance of plasmon in the transverse mode of the gold coating layer is 0.22. That is, the absorbance is increased by 0.07 points from 0.15 of the gold fine particles. This increase is due to the increase in the horizontal area of the gold coating layer (the area of the umbrella part of the mushroom).
- Example 2 ⁇ Sea island structure of L-shaped block>
- the color of the nanostructured substrate changed from bluish purple to dark purple.
- a photograph of the nanostructured substrate after heat treatment observed from the surface side is shown in FIG. In FIG. 4, a place corresponding to the start of the sea island structure of Example 2 is still seen.
- FIG. 4 many places where the gold coating layers are connected and grow into an L-shaped block are observed. Traces of multiple gold coating layers can still be seen in this L-shaped block. From this, it can be seen that the heights of the gold coating layers of the L-shaped blocks are different. Moreover, the geometric surface area on the front surface side of the composite particle group is larger than the geometric surface area on the back surface side.
- the absorption spectrum distribution of gold was observed in the same manner as in Example 1. This absorption spectrum curve is shown in the second curve from the top of FIG. Looking at the curve of Example 2, it can be seen that the peak value of plasmon in the transverse mode of the gold coating layer shifts from about 550 nm to about 580 nm of the gold fine particle group. That is, this shift indicates that the apparent aspect ratio of the gold coating layer has increased. In addition, the peak value of plasmon in the transverse mode of the gold coating layer is significantly increased from 0.15 to 0.3. This increase is due to the increase in the horizontal area (total volume) of the gold coating layer.
- plasmons in the longitudinal mode can be seen near 750 nm in the right direction of this curve. This plasmon is expressed at a position similar to that of the plasmon in the longitudinal mode observed in gold nanorods. From this, it can be seen that the apparent aspect ratio of the gold coating layer is large.
- Example 3 The electroless gold plating step was repeated for another 3 cycles to granulate the gold coating layer. As shown in FIG. 5, the part of the sea that looks black has begun to disappear. It can be said that this is the final stage of the sea island structure. Since the composite particle group still remains spherical, the geometric surface area on the front surface side of the composite particle group is larger than the geometric surface area on the back surface side. The color of the nanostructured substrate changed from bluish purple to gold. The uppermost curve in FIG. 6 is the plasmon curve of Example 3.
- the nanostructured substrate of the present invention can be used as a surface-enhanced Raman spectrum substrate having sensitivity for single molecule detection. It can also be used as a substrate for detecting environmentally harmful substances and detecting viruses and the like. Further, the nanostructured substrate of the present invention can be used as a substrate for the purpose of improving the luminous efficiency of the light emitting element by utilizing the localized plasmon resonance phenomenon and improving the conversion efficiency of the photoelectric conversion element or the thermophotomotive power element. Furthermore, the nanostructured substrate of the present invention utilizes the action of localized plasmon resonance and may be used in chemical and biometric industries such as chemical sensors and biosensors.
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Abstract
Description
(1)複合粒子群からなる金属構造体、および樹脂基体と支持体からなる基板によって構成される、表裏面を有するナノ構造基板において、当該複合粒子群の表面側の幾何学的表面積が裏面側の幾何学的表面積よりも大きく、その複合粒子は、金属等微粒子とその上部が還元析出された金属または共析物の被覆層とから構成され、その金属等微粒子の下部が樹脂基体に埋設されてなり、その埋設された金属等微粒子は互いに離れて存在していることを特徴とするナノ構造基板。
(発明の作用)
樹脂基体に金属等微粒子群が固定され、この金属等微粒子群に被覆層が析出しているとする。x軸方向の金属等微粒子群をΣMiとし、y軸方向の金属等微粒子をΣMkとする(i=kの場合も含む)と、個々の金属等微粒子は互いに離れて存在している。このうちの2個の金属等微粒子(MiおよびMi-1)を図1に示す。図1は本発明の原理を説明するための概念図である。
また、図1に示す2個の被覆層、すなわち複合粒子群の表面側の幾何学的表面積が金属等微粒子(MiおよびMi-1)の裏面側の幾何学的表面積よりも大きくなっているので、これまでのように局所的なホットスポットが発生することもない。なお、外部の電磁波の波長による複合粒子群の共振周波数は、金属の種類や表面形態および媒質などによって異なる。
なお観察には走査電子顕微鏡(株式会社日立ハイテクノロジーズ製SU8020)を用いた。
図2は、水溶液から還元析出された金属等微粒子群(ΣMi、ΣMk)が樹脂基体上に固定されたものである。この金属等微粒子群(ΣMi、ΣMk)は適当な分散剤によって自己集合化され、水平方向に間隔をあけて樹脂基体上にこの金属等微粒子群(ΣMi、ΣMk)が整列されている。湿式めっきによる被覆層を形成する前の埋設された状態をこの金属等微粒子群は示す。この場合、複合粒子群の表面側の幾何学的表面積が裏面側の幾何学的表面積と等しい。
<金微粒子群の集合体>
図2は、熱硬化型透明樹脂基体上で還元された平均粒径20nmの金微粒子群が透明な樹脂支持体上の表面側で固定されている。図1に示すように、隣り合う金微粒子は互いに離れて存在しており、二次元的に配置されている。このため図2にみられるx軸方向に連続する3個の金微粒子およびy軸方向に連続する3個の金微粒子であっても、図2に示すすべての金微粒子群の断面は同一平面にある。
<金微粒子群の整列>
透明な半硬化性のポリエステル樹脂フィルム(ガラス転移温度(実測値)140℃)上に水溶液から還元析出された金微粒子群(平均粒径20nm)を自己集合化させ、所定の熱処理をした。この金微粒子群の下部は、ポリエステル樹脂フィルム中に半分沈みこみ、透明な樹脂基体の表面側に埋設された。この裏面側が電磁波または電場の受光面になる。これを比較例とする。
次いで、この比較例について、400nm~900nmの波長範囲で吸光度を測定し、金の吸収スペクトル分布をみた。吸光度測定にはファイバマルチチャネル分光器(オーシャンオプティクス社製Flame)を用いた。比較例の吸収スペクトル曲線は図6の一番下の曲線である。この曲線をみると、550nm付近に吸光度0.15の金微粒子群特有のプラズモンが出現していることがわかる。
<金被覆層の析出>
次に、65℃の無電解金めっき液(日本エレクトロプレイティング・エンジニヤース株式会社製プレシャスファブACG3000WXの改良浴)にこの透明な基板を10秒間浸漬し、1サイクルとした。この工程を3サイクル繰り返し、金被覆層とした。すなわち、固定した金微粒子群上に金結晶粒を析出させた。これを図3に示す。
<L字形ブロックの海島構造>
無電解金めっき工程をさらに3サイクル繰り返したところ、ナノ構造基板の色は青紫色から暗紫色へ変化した。表面側から観察した熱処理後のナノ構造基板の写真を図4に示す。図4には実施例2の海島構造の開始に相当する場所が依然みられる。
無電解金めっき工程をさらに3サイクル繰り返して金被覆層を造粒させた。図5に示すように、黒く見える海の部分が消失し始めた。海島構造の終期の段階といえる。複合粒子群がまだ球形を保っているので、複合粒子群の表面側の幾何学的表面積が裏面側の幾何学的表面積よりも大きくなっている。ナノ構造基板の色は青紫色から金色に変化した。図6の一番上の曲線が実施例3のプラズモン曲線である。
Claims (9)
- 複合粒子群からなる金属構造体、および樹脂基体と支持体からなる基板によって構成される、表裏面を有するナノ構造基板において、当該複合粒子群の表面側の幾何学的表面積が裏面側の幾何学的表面積よりも大きく、その複合粒子は、金属等微粒子とその上部が還元析出された金属または共析物の被覆層とから構成され、その金属等微粒子の下部が樹脂基体に埋設されてなり、その埋設された金属等微粒子は互いに離れて存在していることを特徴とするナノ構造基板。
- 上記被覆層が水溶液から還元析出された金属、合金または共析物であることを特徴とする請求項1に記載のナノ構造基板。
- 上記被覆層が連結されていることを特徴とする請求項1に記載のナノ構造基板。
- 上記金属等微粒子の平均直径が10~90nmであることを特徴とする請求項1に記載のナノ構造基板。
- 上記金属等微粒子が自己集合化されたものであることを特徴とする請求項1に記載のナノ構造基板。
- 上記被覆層および上記金属等微粒子が同種の金属であることを特徴とする請求項1に記載のナノ構造基板。
- 上記被覆層が貴金属であることを特徴とする請求項1に記載のナノ構造基板。
- 上記複合粒子群がプラズモン特性を示すことを特徴とする請求項1に記載のナノ構造基板。
- 上記金属等微粒子が電磁波または電場の受光面であることを特徴とする請求項1に記載のナノ構造基板。
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| US17/433,123 US20220145470A1 (en) | 2019-04-26 | 2020-03-26 | Nanostructure substrate |
| EP20794807.6A EP3960699B1 (en) | 2019-04-26 | 2020-03-26 | Nanostructure substrate |
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| JP2011511885A (ja) | 2008-01-09 | 2011-04-14 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | 貴金属ナノ粒子分散液の製造方法および前記の分散液からかかるナノ粒子を単離する方法 |
| JP2013010884A (ja) | 2011-06-30 | 2013-01-17 | Nippon Steel & Sumikin Chemical Co Ltd | 金属微粒子複合体及びその製造方法 |
| JP2013177665A (ja) | 2011-03-31 | 2013-09-09 | Sumitomo Chemical Co Ltd | 金属系粒子集合体 |
| JP2015163845A (ja) | 2014-02-28 | 2015-09-10 | 国立研究開発法人物質・材料研究機構 | 表面増強ラマンスペクトル用基板 |
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| JP2005054240A (ja) * | 2003-08-05 | 2005-03-03 | Fuji Photo Film Co Ltd | 導電性フィルムおよびその作製方法 |
| JP4163606B2 (ja) * | 2003-12-10 | 2008-10-08 | 富士フイルム株式会社 | 微細構造体、微細構造体の作製方法、ラマン分光方法および装置 |
| JP4445448B2 (ja) * | 2005-09-16 | 2010-04-07 | 株式会社東芝 | 回路基板の製造方法 |
| JP2008026109A (ja) * | 2006-07-20 | 2008-02-07 | Fujifilm Corp | 微細構造体及びその製造方法、センサデバイス及びラマン分光用デバイス |
| EP2548912A4 (en) * | 2010-03-19 | 2014-06-25 | Nippon Steel & Sumikin Chem Co | METAL-MICRO PARTICLE COMPOSITE |
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| KR101313634B1 (ko) * | 2011-06-01 | 2013-10-02 | 광주과학기술원 | 산화아연 반구체를 포함하는 광전극, 그 제조방법 및 이를 이용한 염료감응 태양전지 |
| WO2015196195A2 (en) * | 2014-06-20 | 2015-12-23 | Rhode Island Board Of Education, State Of Rhode Island And Provide Plantations | Systems and methods for electroless plating of thin gold films directly onto silicon nitride and into pores in silicon nitride |
| CN109996757A (zh) * | 2015-06-12 | 2019-07-09 | 罗地亚经营管理公司 | 含枝状体的混合纳米粒子、生产此类混合纳米粒子的方法以及它们的用途 |
| CN107942428A (zh) * | 2017-11-15 | 2018-04-20 | 江西师范大学 | 一种红外光完美吸收器及其制备方法 |
| CN111512193B (zh) * | 2017-12-25 | 2022-04-05 | 国立大学法人北海道大学 | 光吸收器件及其制造方法以及光电极 |
| CN208399384U (zh) * | 2018-01-30 | 2019-01-18 | 苏州天际创新纳米技术有限公司 | 一种sers单元、sers芯片及sers检测系统 |
| US20220228992A1 (en) * | 2019-05-06 | 2022-07-21 | The Research Foundation For The State University Of New York | Substrates for surface-enhanced raman spectroscopy and methods for manufacturing same |
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| JP2004051997A (ja) | 2002-07-16 | 2004-02-19 | Ulvac Japan Ltd | 金属微粒子分散液及びその調製方法、並びに透明着色膜及びその作製方法 |
| JP2011511885A (ja) | 2008-01-09 | 2011-04-14 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト | 貴金属ナノ粒子分散液の製造方法および前記の分散液からかかるナノ粒子を単離する方法 |
| JP2013177665A (ja) | 2011-03-31 | 2013-09-09 | Sumitomo Chemical Co Ltd | 金属系粒子集合体 |
| JP2013010884A (ja) | 2011-06-30 | 2013-01-17 | Nippon Steel & Sumikin Chemical Co Ltd | 金属微粒子複合体及びその製造方法 |
| JP2015163845A (ja) | 2014-02-28 | 2015-09-10 | 国立研究開発法人物質・材料研究機構 | 表面増強ラマンスペクトル用基板 |
| JP2018048382A (ja) * | 2016-09-23 | 2018-03-29 | 日本エレクトロプレイテイング・エンジニヤース株式会社 | 金属膜の積層構造 |
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| Publication number | Publication date |
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| JP6812492B2 (ja) | 2021-01-13 |
| EP3960699A4 (en) | 2023-07-26 |
| JP2020180356A (ja) | 2020-11-05 |
| EP3960699A1 (en) | 2022-03-02 |
| TWI844633B (zh) | 2024-06-11 |
| TW202106607A (zh) | 2021-02-16 |
| KR20210132699A (ko) | 2021-11-04 |
| KR102603853B1 (ko) | 2023-11-17 |
| US20220145470A1 (en) | 2022-05-12 |
| CN113382954A (zh) | 2021-09-10 |
| EP3960699B1 (en) | 2026-02-11 |
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