Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage
Patent
1985-09-20
1987-01-13
Carroll, J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Frequency of cyclic current or voltage
357 6, 357 231, 357 237, 357 55, 324 715, 204 1T, 204416, 204418, H01L 4902, H01L 2978, H01L 2966, H01L 2906
Patent
active
046368272
ABSTRACT:
A device comprising a field effect transistor having a floating gate 20 formed on a first surface of a substrate 10 over gate oxide 13a and source and drain regions 11, 12. A responsive layer 15 is provided on the second surface of the substrate and is capacitatively coupled to the floating gate via a thin insulating membrane 13b at a location away from the transistor. The device is applicable in the biomedical domain.
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M. A. Afromowitz et al., "Fabrication of pH-Sensitive Implantable Electrode by Thick Film Hybrid Technology", Journal of Bioengineering, vol. 1 (1977), pp. 55-60.
M. Esashi et al., "Integrated Micro Multi Ion Sensor Using Field Effect of Semiconductor", IEEE Transactions on Biomedical Engineering, vol. BME-25 (1978), pp. 184-192.
J. N. Zemel, "Chemically Sensitive Semiconductor Devices", Research/Development vol. 28 (1977), pp. 38-44.
Carroll J.
Fondation Suisse de Recherche en Microtechnique
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