1. Glucose Oxidase (GOD)-Coupled Amperometric Microsensor with Integrated Electrochemical Actuation System
- Author
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C. Kim, Shanrui Zhang, M. Choi, and J. Park
- Subjects
Materials science ,biology ,Glucose Measurement ,Electrode ,Electronic engineering ,biology.protein ,Miniaturization ,Glucose oxidase ,Sensitivity (control systems) ,Actuator ,Biosensor ,Amperometry - Abstract
Recent developments for biosensors have been mainly focused on miniaturization and exploratory use of new materials. It should be emphasized that the absence of a novel "in-situ self-calibration/diagnosis technique" that is not connected to an external apparatus is a key obstacle to the realization of a biosensor for continuous use with minimum attendance. In order to address this issue, a novel solid-state glucose oxidase-coupled amperometric biosensor with integrated electrochemical actuation system has been designed and validated. There are two key components of the proposed glucose biosensor: solid-state GOD-coupled thin-1m amperometric sensing element and O2 depleting/saturating built-in electrochemical actuator. The actuator can be used to accomplish in-situ 1-point self-calibration by depleting O2 (i.e., by simulating glucose-free environment). Also, it can be used at the same time to extend the proposed sensor's linear detection range by increasing O2 (i.e., by enhancing glucose sensitivity). A prototype sensor was fabricated and a series of lab experiments was conducted. Collected data assures that the proposed sensor effectively establishes the zero calibration point and significantly enhances its measurement sensitivity and confidence
- Published
- 2006