Publication Date:
2005-09-10
Description:
A previously unknown rigid helical structure of zinc oxide consisting of a superlattice-structured nanobelt was formed spontaneously in a vapor-solid growth process. Starting from a single-crystal stiff nanoribbon dominated by the c-plane polar surfaces, an abrupt structural transformation into the superlattice-structured nanobelt led to the formation of a uniform nanohelix due to a rigid lattice rotation or twisting. The nanohelix was made of two types of alternating and periodically distributed long crystal stripes, which were oriented with their c axes perpendicular to each other. The nanohelix terminated by transforming into a single-crystal nanobelt dominated by nonpolar (0110) surfaces. The nanohelix could be manipulated, and its elastic properties were measured, which suggests possible uses in electromechanically coupled sensors, transducers, and resonators.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gao, Pu Xian -- Ding, Yong -- Mai, Wenjie -- Hughes, William L -- Lao, Changshi -- Wang, Zhong Lin -- New York, N.Y. -- Science. 2005 Sep 9;309(5741):1700-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16151005" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink