In-Plane Self-Turning and Twin Dynamics Renders Large Stretchability to Mono-Like Zigzag Silicon Nanowire Springs
详细信息 查看全文
- 作者：Zhaoguo Xue ; Mingkun Xu ; Xing Li ; Jimmy Wang ; Xiaofan Jiang ; Xianlong Wei ; Linwei Yu ; Qing Chen ; Junzhuan Wang ; Jun Xu ; Yi Shi ; Kunji Chen and Pere Roca i Cabarrocas
- 刊名：Advanced Functional Materials
- 出版年：2016
- 出版时间：August 2, 2016
- 年：2016
- 卷：26
- 期：29
- 页码：5352-5359
- 全文大小：3936K
- ISSN：1616-3028
文摘
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.