Spring-shaped stimuli-responsive hydrogel actuator for magnifying compression and expansion motions

Koki Yoshida; Shunsuke Nakajima; Ryuji Kawano; Hiroaki Onoe

doi:10.1109/MEMSYS.2018.8346619

Spring-shaped stimuli-responsive hydrogel actuator for magnifying compression and expansion motions

Koki Yoshida, Shunsuke Nakajima, Ryuji Kawano, Hiroaki Onoe

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This study describes stimuli-responsive hydrogel micro-actuators for compressive/expanding actuation of stimuli-responsive hydrogels. Inspired by living bioactuators such as a stalk in vorticella, we applied this spring-shaped structure to engineered stimuli-responsive hydrogel actuators to magnify its degree of deformation. We achieved the shrinkage degree of ∼0.2, which is the approximately 2 time smaller than that of bulk hydrogel material (shrinkage degree ∼0.4), without any modification of molecules. Furthermore, both compression and expansion motions were demonstrated by changing the pattern of stimuli-responsive part in the microsprings, indicating that our approach could enable wide variety of motions by their patterning condition of microsprings. Our large compression/expansion stimuli-responsive hydrogel microsprings have immense potential to be applied in various microengineering products including soft actuators, chemical sensors, and medical applications.

Original language	English
Title of host publication	2018 IEEE Micro Electro Mechanical Systems, MEMS 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	579-580
Number of pages	2
Volume	2018-January
ISBN (Electronic)	9781538647820
DOIs	https://doi.org/10.1109/MEMSYS.2018.8346619
Publication status	Published - 2018 Apr 24
Event	31st IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2018 - Belfast, United Kingdom Duration: 2018 Jan 21 → 2018 Jan 25

Other

Other	31st IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2018
Country	United Kingdom
City	Belfast
Period	18/1/21 → 18/1/25

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanical Engineering
Electrical and Electronic Engineering

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10.1109/MEMSYS.2018.8346619

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Spring-shaped stimuli-responsive hydrogel actuator for magnifying compression and expansion motions. / Yoshida, Koki; Nakajima, Shunsuke; Kawano, Ryuji; Onoe, Hiroaki.

2018 IEEE Micro Electro Mechanical Systems, MEMS 2018. Vol. 2018-January Institute of Electrical and Electronics Engineers Inc., 2018. p. 579-580.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yoshida, K, Nakajima, S, Kawano, R & Onoe, H 2018, Spring-shaped stimuli-responsive hydrogel actuator for magnifying compression and expansion motions. in 2018 IEEE Micro Electro Mechanical Systems, MEMS 2018. vol. 2018-January, Institute of Electrical and Electronics Engineers Inc., pp. 579-580, 31st IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2018, Belfast, United Kingdom, 18/1/21. https://doi.org/10.1109/MEMSYS.2018.8346619

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