期刊
NATURE COMMUNICATIONS
卷 6, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms8416
关键词
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资金
- US Defense Threat Reduction Agency (DTRA) [HDTRA1-15-1-0022]
- US National Aeronautics and Space Administration (NASA) [NNX14AB07G]
- US National Science Foundation (NSF) [CMMI-1300613]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1300613] Funding Source: National Science Foundation
Smart shape-memory polymers can memorize and recover their permanent shape in response to an external stimulus (for example, heat). They have been extensively exploited for a wide spectrum of applications ranging from biomedical devices to aerospace morphing structures. However, most of the existing shape-memory polymers are thermoresponsive and their performance is hindered by heat-demanding programming and recovery steps. Although pressure is an easily adjustable process variable such as temperature, pressure-responsive shape-memory polymers are largely unexplored. Here we report a series of shape-memory polymers that enable unusual 'cold' programming and instantaneous shape recovery triggered by applying a contact pressure at ambient conditions. Moreover, the interdisciplinary integration of scientific principles drawn from two disparate fields-the fast-growing photonic crystal and shape-memory polymer technologies-enables fabrication of reconfigurable photonic crystals and simultaneously provides a simple and sensitive optical technique for investigating the intriguing shape-memory effects at nanoscale.
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