Fast Thermoresponsive Optical Membrane Using Hydrogels Embedded in Macroporous Silicon

We have fabricated a temperature-sensitive hydrogel through copolymerization of N-isopropylacrylamide and acrylamide inside a macroporous silicon structure and demonstrated fast thermal response compared to its bulk structure. The presented method allows physical arrangement of microsized hydrogels...

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Bibliographic Details
Published in:IEEE sensors letters 2018-06, Vol.2 (2), p.1-4
Main Authors: Seo, Sang-Woo, Enemuo, Amarachukwu N., Azmand, Hojjat Rostami
Format: Article
Language:English
Subjects:
Acrylamide
Actuators
Copolymerization
hydrogel-based sensors and actuators
Hydrogels
Isopropylacrylamide
macroporous silicon
Optical device fabrication
optical sensor
Optical sensors
Physical arrangement
Response time
Sensor phenomena
Silicon
Temperature measurement
temperature sensor
Temperature sensors
Thermal response
Time factors
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Summary:We have fabricated a temperature-sensitive hydrogel through copolymerization of N-isopropylacrylamide and acrylamide inside a macroporous silicon structure and demonstrated fast thermal response compared to its bulk structure. The presented method allows physical arrangement of microsized hydrogels within a predefined arrayed structure. Static and dynamic temperature responses of the fabricated structure are successfully demonstrated through optical transmission measurement. The measured temporal response reveals that the presented structure can allow fast response time of the implemented hydrogels. Furthermore, a spatial thermo-distribution pattern can be observed through pixel-like, arrayed macropores, which indicates a potential for addressing individual or single-channel hydrogel sensors or actuators through temperature stimulation.
ISSN:2475-1472
2475-1472
DOI:10.1109/LSENS.2018.2832006