ISFET Ion Sensor.
نویسندگان
چکیده
منابع مشابه
An Integrated ISFET Sensor Array
A monolithically integrated ISFET sensor array and interface circuit are described. A new high-density, low-power source-drain follower was developed for the sensor array. ISFETs were formed by depositing Au/Ti extended-gate electrodes on standard MOSFETs, then thin silicon nitride layers using catalytic chemical vapor deposition and/or SU-8 protective layers were formed on the extended-gate el...
متن کاملDevelopment of an ISFET based heparin sensor using the ion-step measuring method
The ion-step measuring method was used to determine heparin concentrations in PBS and blood plasma. Heparin is a sulphated polysaccharide which is clinically used as a drug to prevent the clotting of blood. The measuring method is based on detection of changes in charge density in a porous membrane which is deposited on the gate of an ISFET. Protamine was used as affinity ligand in the membrane...
متن کاملDynamic Behaviour of ISFET - based Sensor - Actuator Systems
Rapid acid-base titrations can be performed at the surface of a noble-metal electrode with coulometrically generated ions. An ISFET is used as an indicator electrode to detect the equivalence point in the resulting titration curve. The time needed to reach the equivalence point is typically 0.5 to 10 s for acid/base concentrations ranging from 0.5 x lop3 to 20 x lop3 mol 1 -I. A model is presen...
متن کاملThe ion sensitive field effect transistor (ISFET) pH electrode: a new sensor for long term ambulatory pH monitoring.
Intraluminal pH monitoring in man should be performed with disposable multichannel assemblies that allow recordings at multiple sites and prevent transmission of infection. Currently available glass electrodes are unsuitable for this purpose because of their size and price. We have thus constructed and tested a small, combined ion sensitive field effect transistor (ISFET) pH electrode incorpora...
متن کاملelectrode Chlorine ion sensor Hydrogen ion sensor Microcontroller Switch Display
A measurement system was successfully fabricated to detect ion concentrations (hydrogen and chlorine) in this study. PIC18F4520, the microcontroller was used as the control unit in the measurement system. The measurement system was practically used to sense the H and Cl in different examples, and the pH and pCl values were exhibited on real-time LCD display promptly. In the study, the measureme...
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ژورنال
عنوان ژورنال: Materia Japan
سال: 1995
ISSN: 1340-2625,1884-5843
DOI: 10.2320/materia.34.1215