am9b17343_si_004.mp4 (13.25 MB)
Fast Digital Patterning of Surface Topography toward Three-Dimensional Shape-Changing Structures
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posted on 2019-12-14, 03:13 authored by Zhou Chen, Changhong Linghu, Kaixin Yu, Jinye Zhu, Hongyu Luo, Chenghao Qian, Yin Chen, Yipu Du, Shun Zhang, Jizhou SongExiting strategies for 3D shape-changing structures are
constrained
by either the complicated fabrication process or the harsh demands
of active materials. Facile preparation of 3D shape-changing structures
with an extremely simple approach based on the elastomeric polymer
still remains a challenging topic. Here, we report a fast digital
patterning of surface topography of a single-layer elastomeric polymer
toward 3D shape-changing structures. The surface topography features
digitally engraved grooves by a laser engraver on a poly(dimethylsiloxane)
(PDMS) sheet, which is surface oxidized by the UV-ozone treatment.
The resulting engraved PDMS sheets exhibit programmable shape-changing
behaviors to form various 3D structures under the action of organic
solvent. Experimental and numerical studies reveal the fundamental
aspects of surface topography-guided 3D shape-changing structures.
Demonstrations of this concept in developing various complex 3D shape-changing
structures illustrate the simplicity and effectiveness of our approach,
thereby creating engineering opportunities in a wide range of applications
such as actuators and soft robots.
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Surface Topography3 D structuresfabrication processsurface topography-guided 3 D shape-changing structures3 D shape-changing structuresPDMS sheets exhibitsurface topography features digitallyFacile preparationengineering opportunitiessurface topographyshape-changing behaviorselastomeric polymerThree-Dimensional Shape-Changing Structures Exiting strategiesFast Digital Patterningsingle-layer elastomeric polymerlaser engraverUV-ozone treatment
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