期刊
NATURE COMMUNICATIONS
卷 3, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms1929
关键词
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资金
- WCU (World Class University) program through the National Research Foundation of Korea
- Ministry of Education, Science and Technology [R32-10051, 20110001684, 20110031630]
- Pioneer Research Center Program through the National Research Foundation of Korea
- Center for Advanced Soft Electronics under the Global Frontier Research Program through the National Research Foundation of Korea
- NSF [ECCS-0824129, OISE-1043143]
- Ryan Fellowship
- Northwestern University International Institute for Nanotechnology
- Global PhD. Fellowship through the National Research Foundation of Korea
- Ministry of Science, ICT & Future Planning, Republic of Korea [KINC01] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2011-0031630, R32-2012-000-10051-0, 2010-0019469] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [824129] Funding Source: National Science Foundation
The realization of levels of stretchability that extend beyond intrinsic limits of bulk materials is of great importance to stretchable electronics. Here we report large-area, three-dimensional nano-architectures that achieve this outcome in materials that offer both insulating and conductive properties. For the elastomer poly(dimethylsiloxane), such geometries enhance the stretchability and fracture strain by similar to 62 % and similar to 225 % over the bulk, unstructured case. The underlying physics involves local rotations of narrow structural elements in the three-dimensional network, as identified by mechanical modelling. To demonstrate the applications of three-dimensional poly(dimethylsiloxane), we create a stretchable conductor obtained by filling the interstitial regions with liquid metal. This stretchable composite shows extremely high electrical conductivity (similar to 24,100 S cm(-1)) even at strains > 200 %, with good cyclic properties and with current-carrying capacities that are sufficient for interconnects in light-emitting diode systems. Collectively, these concepts provide new design opportunities for stretchable electronics.
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