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Reversible Bending Behaviors of Photomechanical Soft Actuators Based on Graphene Nanocomposites
Photomechanical nanocomposites embedded with light-absorbing nanoparticles show promising applications in photoresponsive actuations. Near infrared (nIR)-responsive nanocomposites based photomechanical soft actuators can offer lightweight functional and underexploited entry into soft robotics, activ...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4893616/ https://www.ncbi.nlm.nih.gov/pubmed/27265380 http://dx.doi.org/10.1038/srep27366 |
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author | Niu, Dong Jiang, Weitao Liu, Hongzhong Zhao, Tingting Lei, Biao Li, Yonghao Yin, Lei Shi, Yongsheng Chen, Bangdao Lu, Bingheng |
author_facet | Niu, Dong Jiang, Weitao Liu, Hongzhong Zhao, Tingting Lei, Biao Li, Yonghao Yin, Lei Shi, Yongsheng Chen, Bangdao Lu, Bingheng |
author_sort | Niu, Dong |
collection | PubMed |
description | Photomechanical nanocomposites embedded with light-absorbing nanoparticles show promising applications in photoresponsive actuations. Near infrared (nIR)-responsive nanocomposites based photomechanical soft actuators can offer lightweight functional and underexploited entry into soft robotics, active optics, drug delivery, etc. A novel graphene-based photomechanical soft actuators, constituted by Polydimethylsiloxane (PDMS)/graphene-nanoplatelets (GNPs) layer (PDMS/GNPs) and pristine PDMS layer, have been constructed. Due to the mismatch of coefficient of thermal expansion of two layers induced by dispersion of GNPs, controllable and reversible bendings response to nIR light irradiation are observed. Interestingly, two different bending behaviors are observed when the nIR light comes from different sides, i.e., a gradual single-step photomechanical bending towards PDMS/GNPs layer when irradiation from PDMS side, while a dual-step bending (finally bending to the PDMS/GNPs side but with an strong and fast backlash at the time of light is on/off) when irradiation from PDMS/GNPs side. The two distinctive photomechanical bending behaviors are investigated in terms of heat transfer and thermal expansion, which reveals that the distinctive bending behaviors can be attributed to the differences in temperature gradients along the thickness when irradiation from different sides. In addition, the versatile photomechanical bending properties will provide alternative way for drug-delivery, soft robotics and microswitches, etc. |
format | Online Article Text |
id | pubmed-4893616 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-48936162016-06-10 Reversible Bending Behaviors of Photomechanical Soft Actuators Based on Graphene Nanocomposites Niu, Dong Jiang, Weitao Liu, Hongzhong Zhao, Tingting Lei, Biao Li, Yonghao Yin, Lei Shi, Yongsheng Chen, Bangdao Lu, Bingheng Sci Rep Article Photomechanical nanocomposites embedded with light-absorbing nanoparticles show promising applications in photoresponsive actuations. Near infrared (nIR)-responsive nanocomposites based photomechanical soft actuators can offer lightweight functional and underexploited entry into soft robotics, active optics, drug delivery, etc. A novel graphene-based photomechanical soft actuators, constituted by Polydimethylsiloxane (PDMS)/graphene-nanoplatelets (GNPs) layer (PDMS/GNPs) and pristine PDMS layer, have been constructed. Due to the mismatch of coefficient of thermal expansion of two layers induced by dispersion of GNPs, controllable and reversible bendings response to nIR light irradiation are observed. Interestingly, two different bending behaviors are observed when the nIR light comes from different sides, i.e., a gradual single-step photomechanical bending towards PDMS/GNPs layer when irradiation from PDMS side, while a dual-step bending (finally bending to the PDMS/GNPs side but with an strong and fast backlash at the time of light is on/off) when irradiation from PDMS/GNPs side. The two distinctive photomechanical bending behaviors are investigated in terms of heat transfer and thermal expansion, which reveals that the distinctive bending behaviors can be attributed to the differences in temperature gradients along the thickness when irradiation from different sides. In addition, the versatile photomechanical bending properties will provide alternative way for drug-delivery, soft robotics and microswitches, etc. Nature Publishing Group 2016-06-06 /pmc/articles/PMC4893616/ /pubmed/27265380 http://dx.doi.org/10.1038/srep27366 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Niu, Dong Jiang, Weitao Liu, Hongzhong Zhao, Tingting Lei, Biao Li, Yonghao Yin, Lei Shi, Yongsheng Chen, Bangdao Lu, Bingheng Reversible Bending Behaviors of Photomechanical Soft Actuators Based on Graphene Nanocomposites |
title | Reversible Bending Behaviors of Photomechanical Soft Actuators Based on Graphene Nanocomposites |
title_full | Reversible Bending Behaviors of Photomechanical Soft Actuators Based on Graphene Nanocomposites |
title_fullStr | Reversible Bending Behaviors of Photomechanical Soft Actuators Based on Graphene Nanocomposites |
title_full_unstemmed | Reversible Bending Behaviors of Photomechanical Soft Actuators Based on Graphene Nanocomposites |
title_short | Reversible Bending Behaviors of Photomechanical Soft Actuators Based on Graphene Nanocomposites |
title_sort | reversible bending behaviors of photomechanical soft actuators based on graphene nanocomposites |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4893616/ https://www.ncbi.nlm.nih.gov/pubmed/27265380 http://dx.doi.org/10.1038/srep27366 |
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