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Graphene/elastomer composite-based photo-thermal nanopositioners

The addition of nanomaterials to polymers can result not only in significant material property improvements, but also assist in creating entirely new composite functionalities. By dispersing graphene nanoplatelets (GNPs) within a polydimethylsiloxane matrix, we show that efficient light absorption b...

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Detalles Bibliográficos
Autores principales: Loomis, James, Fan, Xiaoming, Khosravi, Farhad, Xu, Peng, Fletcher, Micah, Cohn, Robert W., Panchapakesan, Balaji
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664893/
https://www.ncbi.nlm.nih.gov/pubmed/23712601
http://dx.doi.org/10.1038/srep01900
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author Loomis, James
Fan, Xiaoming
Khosravi, Farhad
Xu, Peng
Fletcher, Micah
Cohn, Robert W.
Panchapakesan, Balaji
author_facet Loomis, James
Fan, Xiaoming
Khosravi, Farhad
Xu, Peng
Fletcher, Micah
Cohn, Robert W.
Panchapakesan, Balaji
author_sort Loomis, James
collection PubMed
description The addition of nanomaterials to polymers can result not only in significant material property improvements, but also assist in creating entirely new composite functionalities. By dispersing graphene nanoplatelets (GNPs) within a polydimethylsiloxane matrix, we show that efficient light absorption by GNPs and subsequent energy transduction to the polymeric chains can be used to controllably produce significant amounts of motion through entropic elasticity of the pre-strained composite. Using dual actuators, a two-axis sub-micron resolution stage was developed, and allowed for two-axis photo-thermal positioning (~100 μm per axis) with 120 nm resolution (feedback sensor limitation), and ~5 μm/s actuation speeds. A PID control loop automatically stabilizes the stage against thermal drift, as well as random thermal-induced position fluctuations (up to the bandwidth of the feedback and position sensor). Maximum actuator efficiency values of ~0.03% were measured, approximately 1000 times greater than recently reported for light-driven polymer systems.
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spelling pubmed-36648932013-05-28 Graphene/elastomer composite-based photo-thermal nanopositioners Loomis, James Fan, Xiaoming Khosravi, Farhad Xu, Peng Fletcher, Micah Cohn, Robert W. Panchapakesan, Balaji Sci Rep Article The addition of nanomaterials to polymers can result not only in significant material property improvements, but also assist in creating entirely new composite functionalities. By dispersing graphene nanoplatelets (GNPs) within a polydimethylsiloxane matrix, we show that efficient light absorption by GNPs and subsequent energy transduction to the polymeric chains can be used to controllably produce significant amounts of motion through entropic elasticity of the pre-strained composite. Using dual actuators, a two-axis sub-micron resolution stage was developed, and allowed for two-axis photo-thermal positioning (~100 μm per axis) with 120 nm resolution (feedback sensor limitation), and ~5 μm/s actuation speeds. A PID control loop automatically stabilizes the stage against thermal drift, as well as random thermal-induced position fluctuations (up to the bandwidth of the feedback and position sensor). Maximum actuator efficiency values of ~0.03% were measured, approximately 1000 times greater than recently reported for light-driven polymer systems. Nature Publishing Group 2013-05-28 /pmc/articles/PMC3664893/ /pubmed/23712601 http://dx.doi.org/10.1038/srep01900 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
Loomis, James
Fan, Xiaoming
Khosravi, Farhad
Xu, Peng
Fletcher, Micah
Cohn, Robert W.
Panchapakesan, Balaji
Graphene/elastomer composite-based photo-thermal nanopositioners
title Graphene/elastomer composite-based photo-thermal nanopositioners
title_full Graphene/elastomer composite-based photo-thermal nanopositioners
title_fullStr Graphene/elastomer composite-based photo-thermal nanopositioners
title_full_unstemmed Graphene/elastomer composite-based photo-thermal nanopositioners
title_short Graphene/elastomer composite-based photo-thermal nanopositioners
title_sort graphene/elastomer composite-based photo-thermal nanopositioners
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3664893/
https://www.ncbi.nlm.nih.gov/pubmed/23712601
http://dx.doi.org/10.1038/srep01900
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