Curved-Lattice Epitaxial Growth of InxAl1鈥?i>xN Nanospirals with Tailored Chirality
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- 作者：Ching-Lien Hsiao ; Roger Magnusson ; Justinas Palisaitis ; Per Sandstr枚m ; Per O. 脜. Persson ; Sergiy Valyukh ; Lars Hultman ; Kenneth J盲rrendahl ; Jens Birch
- 刊名：Nano Letters
- 出版年：2015
- 出版时间：January 14, 2015
- 年：2015
- 卷：15
- 期：1
- 页码：294-300
- 全文大小：383K
- ISSN：1530-6992
文摘
Chirality, tailored by external morphology and internal composition, has been realized by controlled curved-lattice epitaxial growth of InxAl1鈥?i>xN nanospirals. The curved morphology of the spiral segments is a result of a lateral compositional gradient while maintaining a preferred crystallographic growth direction, implying a lateral gradient in optical properties. Individual nanospirals show an asymmetric core鈥搒hell structure with curved basal planes. Mueller matrix spectroscopic ellipsometry shows that the tailored chirality is manifested in the polarization state of light reflected off the nanospirals.