期刊
NPG ASIA MATERIALS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/am.2017.101
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资金
- National Research Foundation (NRF) - Korean government (Ministry of Science, ICT & Future Planning, MSIP) through the Global Research Lab. [GRL: 2016K1A1A2912753]
- National Research Foundation of Korea [2016K1A1A2912753] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A photothermally foldable soft bimorph was prepared via the dry transfer of poly(3,4-ethylenedioxythiophene) (PEDOT) doped with tosylate onto a poly(dimethylsiloxane) film. The photothermal folding was optimized via reversible actuation by controlling the thickness of each layer and the temperature increase to afford large deflection and displacement up to 150 degrees and >20 mm, respectively, upon exposure to near-infrared (NIR) light (808 nm). A two-dimensional array of the bimorph converted into complex three-dimensional architectures, such as a Venus flytrap, under light and reversibly unfolded in the dark. Taking advantage of the photothermal nature of PEDOT, a localized heat pocket was generated inside the folding structure. Thus, a Venus flytrap with a hot pocket reaching 100 degrees C was realized for the first time. The Venus flytrap could trap and move an object within a few seconds of NIR exposure.
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