Photothermal Nanocomposite Hydrogel Actuator with Electric-Field-Induced Gradient and Oriented Structure.

Recent research of hydrogel actuators is still not sophisticated enough to meet the requirement of fast, reversible, complex, and robust reconfiguration. Here, we present a new kind of poly( N-isopropylacrylamide)/graphene oxide gradient hydrogel by utilizing direct current electric field to induce gradient and oriented distribution of graphene oxide into poly( N-isopropylacrylamide) hydrogel. Upon near-infrared light irradiation, the hydrogel exhibited excellent comprehensive actuation performance as a result of directional bending deformation, promising great potential in the application of soft actuators and optomechanical system.

[1]  Lei Wang,et al.  Photothermal Surface Plasmon Resonance and Interband Transition‐Enhanced Nanocomposite Hydrogel Actuators with Hand‐Like Dynamic Manipulation , 2017 .

[2]  Andrew G. Gillies,et al.  Optically-and Thermally-responsive Programmable Materials Based on Carbon Nanotube-hydrogel Polymer Composites , 2022 .

[3]  Jide Wang,et al.  Electric field-induced gradient strength in nanocomposite hydrogel through gradient crosslinking of clay. , 2015, Journal of materials chemistry. B.

[4]  Alexis D. Ostrowski,et al.  Photoresponsive Polysaccharide-Based Hydrogels with Tunable Mechanical Properties for Cartilage Tissue Engineering. , 2016, ACS applied materials & interfaces.

[5]  Shuo Huang,et al.  Near-Infrared Light-Responsive Semiconductor Polymer Composite Hydrogels: Spatial/Temporal-Controlled Release via a Photothermal "Sponge" Effect. , 2017, ACS applied materials & interfaces.

[6]  L. Chu,et al.  Near-Infrared Light-Responsive Poly(N-isopropylacrylamide)/Graphene Oxide Nanocomposite Hydrogels with Ultrahigh Tensibility. , 2015, ACS applied materials & interfaces.

[7]  Jun Peng,et al.  Photothermally Sensitive Poly(N‐isopropylacrylamide)/Graphene Oxide Nanocomposite Hydrogels as Remote Light‐Controlled Liquid Microvalves , 2012 .

[8]  Chia-Hung Chen,et al.  Gradient Porous Elastic Hydrogels with Shape‐Memory Property and Anisotropic Responses for Programmable Locomotion , 2015 .

[9]  Wei Chen,et al.  Photoactuators for Direct Optical‐to‐Mechanical Energy Conversion: From Nanocomponent Assembly to Macroscopic Deformation , 2016, Advanced materials.

[10]  Tao Wang,et al.  Infrared-driving actuation based on bilayer graphene oxide-poly(N-isopropylacrylamide) nanocomposite hydrogels , 2014 .

[11]  P. Müller‐Buschbaum,et al.  Influence of Hydrophobic Polystyrene Blocks on the Rehydration of Polystyrene-block-poly(methoxy diethylene glycol acrylate)-block-polystyrene Films Investigated by in Situ Neutron Reflectivity , 2016 .

[12]  Malav S. Desai,et al.  Light-controlled graphene-elastin composite hydrogel actuators. , 2013, Nano letters.

[13]  X. Qu,et al.  Near‐Infrared Light‐Triggered, Targeted Drug Delivery to Cancer Cells by Aptamer Gated Nanovehicles , 2012, Advanced materials.

[14]  Xuemei Sun,et al.  Tunable Photothermal Actuators Based on a Pre-programmed Aligned Nanostructure. , 2016, Journal of the American Chemical Society.

[15]  Marc A. Meyers,et al.  Functional gradients and heterogeneities in biological materials: Design principles, functions, and bioinspired applications , 2017 .

[16]  Huiliang Wang,et al.  Complex shape deformations of homogeneous poly(N-isopropylacrylamide)/graphene oxide hydrogels programmed by local NIR irradiation. , 2017, Journal of materials chemistry. B.

[17]  Wei Lu,et al.  A Multiresponsive Anisotropic Hydrogel with Macroscopic 3D Complex Deformations , 2016 .

[18]  Yanlei Yu,et al.  Humidity‐ and Photo‐Induced Mechanical Actuation of Cross‐Linked Liquid Crystal Polymers , 2017, Advanced materials.

[19]  Fei Wang,et al.  Graphene‐Based Polymer Bilayers with Superior Light‐Driven Properties for Remote Construction of 3D Structures , 2017, Advanced science.

[20]  Jinhwan Yoon,et al.  Photothermally triggered fast responding hydrogels incorporating a hydrophobic moiety for light-controlled microvalves. , 2014, ACS applied materials & interfaces.

[21]  Jian Chang,et al.  Near‐Infrared Light‐Driven, Highly Efficient Bilayer Actuators Based on Polydopamine‐Modified Reduced Graphene Oxide , 2014 .

[22]  Hans-Jürgen Butt,et al.  Near‐Infrared‐Sensitive Materials Based on Upconverting Nanoparticles , 2016, Advanced materials.

[23]  Zhen Tong,et al.  Bioinspired Smart Actuator Based on Graphene Oxide-Polymer Hybrid Hydrogels. , 2015, ACS applied materials & interfaces.

[24]  H. Tenhu,et al.  Non-ionic Thermoresponsive Polymers in Water , 2010 .

[25]  Arri Priimagi,et al.  A light-driven artificial flytrap , 2017, Nature Communications.

[26]  Weixiang Sun,et al.  Programmable and Bidirectional Bending of Soft Actuators Based on Janus Structure with Sticky Tough PAA-Clay Hydrogel. , 2017, ACS applied materials & interfaces.

[27]  Masaki Takata,et al.  An anisotropic hydrogel with electrostatic repulsion between cofacially aligned nanosheets , 2014, Nature.

[28]  Yang Liu,et al.  A Graphene‐Based Bimorph Structure for Design of High Performance Photoactuators , 2015, Advanced materials.

[29]  Zhiyong Meng,et al.  Thermoresponsive microgel-based materials. , 2009, Chemical Society reviews.