A porous actuator for an Isfet-based coulometric sensor-actuator system


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Luo, J. and Olthuis, W. and Bergveld, P. and Linden van der, W.E. and Bos, M. (1991) A porous actuator for an Isfet-based coulometric sensor-actuator system. In: International Conference on Solid-State Sensors and Actuators, Digest of Technical Papers, TRANSDUCERS, June 24-27, 1991, San Fransisco, USA.

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Abstract:The previously developed prototype ISFET (ion-sensitive field effect transistor)-based coulometric sensor-actuator system suffers from delay in response due to the nonzero distance between the sensor and actuator. The authors describe a novel configuration of a sensor-actuator device which employs a porous noble metal electrode as the actuator closely spaced around and over the gate of the ISFET. The novel device was characterized by performing an acid-to-base titration. The results showed that the delay time was considerably reduced. The titration times were found to be from 0.1 to 4.0 s. The corresponding concentrations of titrated species were from 0.5 to 15 mM
Item Type:Conference or Workshop Item
Copyright:©1991 IEEE
Faculty:
Electrical Engineering, Mathematics and Computer Science (EEMCS)
Research Group:
Link to this item:http://purl.utwente.nl/publications/17270
Official URL:http://dx.doi.org/10.1109/SENSOR.1991.148844
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