Macroporous smart hydrogels for fast-responsive piezoresistive chemical microsensors
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Advisor
Volume
25
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Journal
Procedia Engineering
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Amsterdam [u.a.] : Elsevier
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Abstract
Within this work we present the synthesis and characterization of a pH-sensitive macroporous p(AAm-co-AA) hydrogel with an interconnected channel structure to enhance diffusion of aqueous solutions. The hydrogel is characterized by SEM and mercury porosimetry. Furthermore, the hydrogel is successfully integrated into piezoresistive microsensors measuring the hydrogel swelling due to pH changes. A response time reduction of about 80% compared to sensors with conventional non-porous hydrogels is accomplished.
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Keywords
Chemical sensor, Macroporous hydrogel, Microsensor, Response time, Channel structures, Chemical microsensors, Hydrogel swelling, Macroporous, Macroporous hydrogels, Mercury porosimetry, pH change, pH sensitive, Piezo-resistive, Smart hydrogels, Chemical sensors, Mercury (metal), Microsensors, Response time (computer systems), Hydrogels
Keywords GND
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Article
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publishedVersion
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CC BY-NC-ND 3.0 Unported