Sensing with FETs - once, now and future


Olthuis, W. and Faber, E.J. and Krommenhoek, E.E. and Berg, A. van den (2007) Sensing with FETs - once, now and future. In: 8. Dresdner Sensor-Symposium, 10-12 Dec 2007, Dresden (pp. pp. 37-44).

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Abstract:In this paper a short overview is given of the several FET-based sensor devices and the operational principle of the ISFET is summarized. Some of the shortcomings of the FET sensors were circumvented by an alternative operational mode, resulting in a device capable of acid/base concentration determination by coulometric titrant generation as well as in an original pH-static enzyme sensor. A more recent example is presented in which the ISFET is used for the on-line monitoring of fermentation processes. Future research is directed towards direct covalent coupling of organic monolayers on the silicon itself. In addition, the field-effect can be applied to the so-called semiconducting nanowire devices, ultimately making single molecule detection of charged species possible.
Item Type:Conference or Workshop Item
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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