We thank S. Ito for preparing a thin section of the sample and for TEM observations. We are also grateful to Dr. Y. Hayashi and Prof. R. Kainuma for their help with the digital optical microscope (KEYENCE, VHX-1000) and the scanning electron microscope (SEM, KEYENCE, VE-9800). This work was supported in part by a Grant-in-Aid for Young Scientists (Start-up) from the Ministry of Education, Culture, Sports, Science and Technology (No. 20860016).
Double-Helical Silicon Microtubes†
Article first published online: 12 APR 2010
Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 49, Issue 21, pages 3638–3641, May 10, 2010
How to Cite
Morito, H. and Yamane, H. (2010), Double-Helical Silicon Microtubes. Angew. Chem. Int. Ed., 49: 3638–3641. doi: 10.1002/anie.200907271
- Issue published online: 6 MAY 2010
- Article first published online: 12 APR 2010
- Manuscript Received: 24 DEC 2009
- Ministry of Education, Culture, Sports, Science and Technology. Grant Number: 20860016
- helical structures;
- X-ray diffraction;
- Zintl phases
A new twist on semiconductors: The evaporation of Na from ionic intermetallic NaSi at 800 °C leads to the formation of double-helical silicon microtubes. The tubes have nanogranular or smooth surfaces and a twinned structure with voids in the tube wall. A mechanism is proposed for the formation of the double-helical microtubes.