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Biomimetics 2018, 3(3), 15; https://doi.org/10.3390/biomimetics3030015

Hydrogel Actuators and Sensors for Biomedical Soft Robots: Brief Overview with Impending Challenges

1,2,†
,
1,3,†
and
1,2,4,*
1
Department of Biomedical Engineering, Faculty of Engineering, 4 Engineering Drive 3, National University of Singapore, Singapore 117583, Singapore
2
Singapore Institute for Neurotechnology (SINAPSE), Centre for Life Sciences, National University of Singapore, 28 Medical Drive, #05-COR, Singapore 117456, Singapore
3
Department of Mechancial Engineering, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
4
National University of Singapore (Suzhou) Research Institute (NUSRI), 377 Lin Quan Street, Suzhou Industrial Park, Suzhou 215123, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 30 April 2018 / Revised: 12 June 2018 / Accepted: 25 June 2018 / Published: 10 July 2018
(This article belongs to the Special Issue Soft Robotics)
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Abstract

There are numerous developments taking place in the field of biorobotics, and one such recent breakthrough is the implementation of soft robots—a pathway to mimic nature’s organic parts for research purposes and in minimally invasive surgeries as a result of their shape-morphing and adaptable features. Hydrogels (biocompatible, biodegradable materials that are used in designing soft robots and sensor integration), have come into demand because of their beneficial properties, such as high water content, flexibility, and multi-faceted advantages particularly in targeted drug delivery, surgery and biorobotics. We illustrate in this review article the different types of biomedical sensors and actuators for which a hydrogel acts as an active primary material, and we elucidate their limitations and the future scope of this material in the nexus of similar biomedical avenues. View Full-Text
Keywords: hydrogel robots; biomedical sensors; soft actuators; stimuli-responsive hydrogels hydrogel robots; biomedical sensors; soft actuators; stimuli-responsive hydrogels
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Banerjee, H.; Suhail, M.; Ren, H. Hydrogel Actuators and Sensors for Biomedical Soft Robots: Brief Overview with Impending Challenges. Biomimetics 2018, 3, 15.

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