1. Development of ChemFET chemical field-effect transistors
At the initiative of P. Bergveld in the 1970s, the MOSFET transistor was adapted to liquid-phase detection, leading to the concept of the ChemFET (chemical field effect transistor) or ISFET (ion-sensitive field effect transistor) .
To achieve this, the metal gate electrode (G ) is replaced by an ion-sensitive insulator, and the gate is electrically biased through an electrolyte via a reference electrode (figure 1 ). By analogy with the operating principle of the MOSFET transistor...
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Development of ChemFET chemical field-effect transistors
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HoneywellpHelectrodes https://www.honeywellprocess.com/en-US/explore/products/instrumentation/analytical-instruments-and-sensors/ph-orp/Pages/durafet-non-glass-ph-sensor.aspx
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