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Responsive nanoporous metals: recoverable modulations on strength and shape by watering
Ye, XL; Liu, LZ; Jin, HJ; Jin, HJ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
2016-08-12
Source PublicationNANOTECHNOLOGY
ISSN0957-4484
Volume27Issue:32
AbstractMany biological materials can readily modulate their mechanical properties and shape by interacting with water in the surrounding environment, which is essential to their high performance in application. In contrast, typical inorganic materials (such as the metals) cannot change their strength and shape without involving thermal/mechanical treatments. By introducing nano-scale porous structure and exploiting a simple physical concept-the watercapillarity in nanopores, here we report that a 'dead' metal can be transformed into a 'smart' material with water-responsive properties. We demonstrate that the apparent strength, volume and shape of nanoporous Au and Au(Pt) can be modulated in situ, dramatically and recoverably, in response to water-dipping and partial-drying. The amplitude of strength-modulation reaches 20 MPa, which is nearly 50% of the yield strength at initial state. This approach also leads to reversible length change up to 1.3% in nanoporous Au and a large reversible bending motion of a bi-layer strip with tip displacement of similar to 20 mm, which may be used for actuation. This method is simple and effective, occurring in situ under ambient conditions and requiring no external power, analogous to biological materials. The findings may open up novel applications in many areas such as micro-robotics and bio-medical devices.
description.department[ye, xing-long ; liu, ling-zhi ; jin, hai-jun] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
KeywordNanoporous Metals Capillarity Actuation Tunable Strength Water
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational Basic Research Program of China [2012CB932202]; National Natural Science Foundation of China [51571206, 51222105]; Key Research Program of Chinese Academy of Sciences [KGZD-EW-T06]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76307
Collection中国科学院金属研究所
Corresponding AuthorJin, HJ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Ye, XL,Liu, LZ,Jin, HJ,et al. Responsive nanoporous metals: recoverable modulations on strength and shape by watering[J]. NANOTECHNOLOGY,2016,27(32).
APA Ye, XL,Liu, LZ,Jin, HJ,&Jin, HJ .(2016).Responsive nanoporous metals: recoverable modulations on strength and shape by watering.NANOTECHNOLOGY,27(32).
MLA Ye, XL,et al."Responsive nanoporous metals: recoverable modulations on strength and shape by watering".NANOTECHNOLOGY 27.32(2016).
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