期刊
ACS MACRO LETTERS
卷 3, 期 9, 页码 940-943出版社
AMER CHEMICAL SOC
DOI: 10.1021/mz500520b
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资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- le Fonds de recherche du Quebec: Nature et technologies (FRQNT)
- China Scholarship Council (CSC)
- Chinese Ministry of Education [313036]
- Programme of Introducing Talents of Discipline to Universities [B13040]
- National Natural Science Foundation of China [51203102, 51010004]
- FRQNT
A unique property of photothermal effect-based shape-memory polymers (SMPs) is demonstrated using a chemically cross-linked poly(ethylene oxide) (PEO) loaded with a small amount (0.5 wt %) of gold nanoparticles (AuNPs). We show that controlled surface plasmon resonance absorption of AuNPs allows for the formation of a temperature gradient in the polymer of temporary shape, which results in anisotropic polymer chain relaxation and strain energy release. This photoinduced temperature gradient effect enables the use of a laser to create a multitude of deformations and to control sophisticated motion executing mechanical work that are otherwise inaccessible with SMPs.
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