Modified measuring method for conductometric chemical sensors

Modified measuring method for conductometric chemical sensors

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Many transducers without electronic circuits are already fabricated. Because a miniaturisation of sensors are required, only an on-chip implementation can be accepted. Our research is focused on precise electronic detectors for conductometric sensors. Results of the research show that the conductometric sensor changes a cell constant correction under variation of a concentration of a liquid solution. It is remarkable for IDES of a microsensor as a parasitic parallel capacity Cp, which impacts an impedance responce of the IDES a lot.Our method realised in new progressive technologies as ASIC can be used for all type conductometric sensors as conductivity sensors of liquid solution, biosensors, gas sensors, etc.

Many transducers without electronic circuits are already fabricated. Because a miniaturisation of sensors are required, only an on-chip implementation can be accepted. Our research is focused on precise electronic detectors for conductometric sensors. Results of the research show that the conductometric sensor changes a cell constant correction under variation of a concentration of a liquid solution. It is remarkable for IDES of a microsensor as a parasitic parallel capacity Cp, which impacts an impedance responce of the IDES a lot.Our method realised in new progressive technologies as ASIC can be used for all type conductometric sensors as conductivity sensors of liquid solution, biosensors, gas sensors, etc.

conductometric; on-chip;IDES

conductometric; on-chip;IDES

HUBÁLEK, J., BEČVÁŘ, D.

07.07.2002

Elsevier Science

Boston, MA, USA

9th International Meeting on Chemical Sensors

352

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