224. TEXTILE-BASED PRINTED BIOELECTRONIC SENSORS

Department: NanoEngineering
Faculty Advisor(s): Joseph Wang
Award(s): Honorable Mention

Primary Student
Name: Joshua Ray Windmiller
Email: jrechaim@ucsd.edu
Phone: 858-246-0671
Grad Year: 2012

Abstract
Fingersticks are a painful and invasive means to assess our pathophysiology. Laboratory-based analytical instrumentation is not amenable for field-based use. Rather than insisting on traditional analytical methods for sample analysis, we present a novel fabrication concept whereby robust sensors and biosensors can be printed directly on textiles for highly-sensitive chemical analysis. Through detailed understanding of the underlying morphology of the textile materials, the diffusive and mass transport properties of the printed electrodes, and the fundamental electrochemical principles governing the chemical reactions occurring at the sensor interface, intelligent sensing systems are realized that can detect physiological concentrations of relevant metabolites as well as parts-per-billion levels of environmental contaminants and security hazards.

Harnessing well-established voltammetric and amperometric techniques in connection with a microelectronic backbone, we present high-fidelity fabric-based micro- and nanosensors that are extended to applications in the healthcare, fitness, environmental monitoring, and combat domains. The research has thus demonstrated the feasibility of employing screen-printed biosensors for a number of utilitarian applications leading to the realization of a new class of inexpensive wearable sensors that enable a "wear and forget" paradigm.

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