JPS5793247A - Ion measuring device - Google Patents
Ion measuring deviceInfo
- Publication number
- JPS5793247A JPS5793247A JP55168982A JP16898280A JPS5793247A JP S5793247 A JPS5793247 A JP S5793247A JP 55168982 A JP55168982 A JP 55168982A JP 16898280 A JP16898280 A JP 16898280A JP S5793247 A JPS5793247 A JP S5793247A
- Authority
- JP
- Japan
- Prior art keywords
- film
- ion
- macromolecular
- inactive
- surface potential
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 150000002500 ions Chemical class 0.000 abstract 6
- 230000005669 field effect Effects 0.000 abstract 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 abstract 1
- 229920005990 polystyrene resin Polymers 0.000 abstract 1
- 229920000915 polyvinyl chloride Polymers 0.000 abstract 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
- 239000012488 sample solution Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/414—Ion-sensitive or chemical field-effect transistors, i.e. ISFETS or CHEMFETS
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
PURPOSE:To obtain a compact reference electrode whose electrode output is stable, by attaching a macromolecular film having an inactive molecular structure whose surface potential is not changed on the outermost surface of a gate part of an ion selective field effect transistor. CONSTITUTION:The ion selective field effect transistor has a source 34, a drain 33, and a gate 31 on a channel P. An ion selective, ion responsive film attached on the outermost surface of the gate part of said transistor, i.e., the surface of an insulating layer of a channel part between the source and the drain or on the insulating layer, is covered by an ion inactive macromolecular film 35. Said macromolecular film 35 is a macromolecular film which has the inactive molecular structure wherein the surface potential is not generated by ions or their activities in a sample solution or the magnitude of the surface potential is not changed even though it is generated. Said film comprises e.g. fluorocarbon resin, polystyrene resin, polyvinyl chloride and the like. The thickness of the film is about 10-1,000mu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55168982A JPS5793247A (en) | 1980-11-29 | 1980-11-29 | Ion measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55168982A JPS5793247A (en) | 1980-11-29 | 1980-11-29 | Ion measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5793247A true JPS5793247A (en) | 1982-06-10 |
Family
ID=15878153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55168982A Pending JPS5793247A (en) | 1980-11-29 | 1980-11-29 | Ion measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5793247A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249046A (en) * | 1984-05-24 | 1985-12-09 | Agency Of Ind Science & Technol | Method for measuring ion activity |
| JPS63298151A (en) * | 1987-05-29 | 1988-12-05 | Shindengen Electric Mfg Co Ltd | Measuring circuit of ion sensor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5481897A (en) * | 1977-12-12 | 1979-06-29 | Kuraray Co | Fet comparison electrode |
| JPS54128791A (en) * | 1978-03-30 | 1979-10-05 | Shingijutsu Kaihatsu Jigyodan | Ion sensor using semiconductor field effect |
-
1980
- 1980-11-29 JP JP55168982A patent/JPS5793247A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5481897A (en) * | 1977-12-12 | 1979-06-29 | Kuraray Co | Fet comparison electrode |
| JPS54128791A (en) * | 1978-03-30 | 1979-10-05 | Shingijutsu Kaihatsu Jigyodan | Ion sensor using semiconductor field effect |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249046A (en) * | 1984-05-24 | 1985-12-09 | Agency Of Ind Science & Technol | Method for measuring ion activity |
| JPS63298151A (en) * | 1987-05-29 | 1988-12-05 | Shindengen Electric Mfg Co Ltd | Measuring circuit of ion sensor |
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