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Graphene oxide/poly (N-isopropylacrylamide) hybrid film-based near-infrared light-driven bilayer actuators with shape memory effect.

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Title: Graphene oxide/poly (N-isopropylacrylamide) hybrid film-based near-infrared light-driven bilayer actuators with shape memory effect.
Authors: Chen, Ze1, Cao, Rui1, Ye, Sunjie2, Ge, Yuanhang1, Tu, Yingfeng1, Yang, Xiaoming1 yangxiaoming@suda.edu.cn
Source: Sensors & Actuators B: Chemical. Feb2018 Part 3, Vol. 255, p2971-2978. 8p.
Subjects: Intelligent actuators, Graphene oxide, Polyacrylamide, Near infrared radiation, Shape memory effect
Abstract: Smart actuators with fast and reversible changes towards external stimuli have attractive potentials in diverse applications. Here, we present the rational design and facile fabrication of graphene oxide (GO)/poly (N-isopropylacrylamide) (PANIPAM) hybrid film-based bilayer actuators, which display efficient and reversible bending/unbending behaviors in response to repeated cycles of near-infrared (NIR) light irradiations. Our bilayer actuator comprises a layer of GO, and a layer of GO/PNIPAM (GP) hybrid, taking advantages of the NIR absorbance and photothermal conversion capability of GO, along with the thermo-responsiveness of PNIPAM. Upon NIR light irradiation, GO converts absorbed light into heat, which subsequently triggers the shrinkage of PANIPAM chains, leading to the bending of the bilayer actuator. Owning to the shape inertness of GO to the NIR light, repeated irradiations of NIR light cause the bilayer to shrink/relax in an asymmetric manner, consequently leading to reversible bending/unbending behaviors of the bilayer actuator. Remarkably, our actuator shows templated bending orientation once exposed to NIR light, and exhibits shape memory effect due to the incomplete recovery of PNIPAM chains. This shape memory effect is retained in rectangular strips cut from the original disk-shaped bilayer and is exploited to selectively achieve either bending or twisting deformation. As an interesting example for potential practical utilization, a smart NIR light-driven forklift capable of lifting goods has been built by pinning one side of the bilayer film. [ABSTRACT FROM AUTHOR]
Copyright of Sensors & Actuators B: Chemical is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 126120051
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
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  Data: Graphene oxide/poly (N-isopropylacrylamide) hybrid film-based near-infrared light-driven bilayer actuators with shape memory effect.
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  Data: <searchLink fieldCode="AR" term="%22Chen%2C+Ze%22">Chen, Ze</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Cao%2C+Rui%22">Cao, Rui</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ye%2C+Sunjie%22">Ye, Sunjie</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ge%2C+Yuanhang%22">Ge, Yuanhang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tu%2C+Yingfeng%22">Tu, Yingfeng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yang%2C+Xiaoming%22">Yang, Xiaoming</searchLink><relatesTo>1</relatesTo><i> yangxiaoming@suda.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Sensors+%26+Actuators+B%3A+Chemical%22">Sensors & Actuators B: Chemical</searchLink>. Feb2018 Part 3, Vol. 255, p2971-2978. 8p.
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  Data: <searchLink fieldCode="DE" term="%22Intelligent+actuators%22">Intelligent actuators</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene+oxide%22">Graphene oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Polyacrylamide%22">Polyacrylamide</searchLink><br /><searchLink fieldCode="DE" term="%22Near+infrared+radiation%22">Near infrared radiation</searchLink><br /><searchLink fieldCode="DE" term="%22Shape+memory+effect%22">Shape memory effect</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Smart actuators with fast and reversible changes towards external stimuli have attractive potentials in diverse applications. Here, we present the rational design and facile fabrication of graphene oxide (GO)/poly (N-isopropylacrylamide) (PANIPAM) hybrid film-based bilayer actuators, which display efficient and reversible bending/unbending behaviors in response to repeated cycles of near-infrared (NIR) light irradiations. Our bilayer actuator comprises a layer of GO, and a layer of GO/PNIPAM (GP) hybrid, taking advantages of the NIR absorbance and photothermal conversion capability of GO, along with the thermo-responsiveness of PNIPAM. Upon NIR light irradiation, GO converts absorbed light into heat, which subsequently triggers the shrinkage of PANIPAM chains, leading to the bending of the bilayer actuator. Owning to the shape inertness of GO to the NIR light, repeated irradiations of NIR light cause the bilayer to shrink/relax in an asymmetric manner, consequently leading to reversible bending/unbending behaviors of the bilayer actuator. Remarkably, our actuator shows templated bending orientation once exposed to NIR light, and exhibits shape memory effect due to the incomplete recovery of PNIPAM chains. This shape memory effect is retained in rectangular strips cut from the original disk-shaped bilayer and is exploited to selectively achieve either bending or twisting deformation. As an interesting example for potential practical utilization, a smart NIR light-driven forklift capable of lifting goods has been built by pinning one side of the bilayer film. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Sensors & Actuators B: Chemical is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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              Text: Feb2018 Part 3
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