Cargando…
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...
Autores principales: | , , , , , , |
---|---|
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 |
_version_ | 1782271180075433984 |
---|---|
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. |
format | Online Article Text |
id | pubmed-3664893 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT loomisjames grapheneelastomercompositebasedphotothermalnanopositioners AT fanxiaoming grapheneelastomercompositebasedphotothermalnanopositioners AT khosravifarhad grapheneelastomercompositebasedphotothermalnanopositioners AT xupeng grapheneelastomercompositebasedphotothermalnanopositioners AT fletchermicah grapheneelastomercompositebasedphotothermalnanopositioners AT cohnrobertw grapheneelastomercompositebasedphotothermalnanopositioners AT panchapakesanbalaji grapheneelastomercompositebasedphotothermalnanopositioners |