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Transparent photoactuators based on localized-surface-plasmon-resonant semiconductor nanocrystals: a platform for camouflage soft robots

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Abstract

Among the various kinds of actuators, photoactuators with the advantages of wireless and remote manipulation have attracted the interest of many researchers. However, it is challenging to develop transparent photoactuators for camouflage soft robots, because most of the current photoactuators use colored or even black light-absorbing agents. Here, we fabricate a series of transparent actuators by employing localized-surface-plasmon-resonant semiconductor nanocrystals, which mainly respond to infrared light. In this way, we introduce the advantages of wireless and remote manipulation into the camouflage soft robots. Three semiconductor nanocrystals (In2O3:Sn, W18O49 and CuS nanocrystals) are fabricated as the photothermal conversion agents to construct the photoactuators. Owing to the weak absorption of visible light, the fabricated actuators exhibit high transparency (maximum transmittance >72% at 600 nm). Meanwhile, they demonstrate remarkable deformations upon near infrared light irradiation (bending curvature up to 0.66 cm−1). Finally, a worm-like crawling robot, a glasswing butterfly robot and a two-finger robot hand are constructed to demonstrate the ability of remote manipulation and inconspicuousness in both the robot appearance and the driving signal, attaining excellent passive camouflage function. These results provide a promising platform for remote-controlled camouflage soft robots and biomimic applications, which will be of significance in the field of soft robotics.

Graphical abstract: Transparent photoactuators based on localized-surface-plasmon-resonant semiconductor nanocrystals: a platform for camouflage soft robots

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Supplementary files

Article information


Submitted
30 Jan 2020
Accepted
31 Mar 2020
First published
31 Mar 2020

Nanoscale, 2020, Advance Article
Article type
Paper

Transparent photoactuators based on localized-surface-plasmon-resonant semiconductor nanocrystals: a platform for camouflage soft robots

F. Huang, M. Weng, Z. Feng, X. Li, W. Zhang and L. Chen, Nanoscale, 2020, Advance Article , DOI: 10.1039/D0NR00812E

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