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- Title
In-Plane Self-Turning and Twin Dynamics Renders Large Stretchability to Mono-Like Zigzag Silicon Nanowire Springs.
- Authors
Xue, Zhaoguo; Xu, Mingkun; Li, Xing; Wang, Jimmy; Jiang, Xiaofan; Wei, Xianlong; Yu, Linwei; Chen, Qing; Wang, Junzhuan; Xu, Jun; Shi, Yi; Chen, Kunji; Roca i Cabarrocas, Pere
- Abstract
Crystalline Si nanowire (SiNW) springs, produced via a low temperature (<350 °C) thin film technology, are ideal building blocks for stretchable electronics. Herein, a novel cyclic crystallographic-index-lowering self-turning and twin dynamics is reported, during a tin-catalyzed in-plane growth of SiNWs, which results in a periodic zigzag SiNW without any external parametric intervention. More interestingly, a unique twin-reflected interlaced crystal-domain structure has been identified for the first time, while in situ and real-time scanning electron microscopy observations reveal a new twin-triggering growth mechanism that is the key to reset a complete zigzag growth cycle. Direct 'stress-strain' testing of the SiNW springs demonstrates a large stretchability of 12% under tensile loading, indicating a whole new strategy and capability to engineer mono-like SiNW channels for high performance stretchable electronics.
- Subjects
SILICON nanowires; NANOSILICON; THIN films; CRYSTALLOGRAPHY; SCANNING electron microscopy
- Publication
Advanced Functional Materials, 2016, Vol 26, Issue 29, p5352
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.201600780