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Article: Zinc oxide nano-rings.(Nanomaterials)
- Article from:
- Advanced Ceramics Report
- Article date:
- May 1, 2004
CopyrightCOPYRIGHT 2004 International Newsletters. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Researchers at the Georgia Institute of Technology, USA, have grown nano-rings of single-crystal zinc oxide. Since the material is piezoelectric and semiconducting, the nanostructures could have applications in sensors, resonators and transducers.
The nano-rings are made up of fine nano-belts that are rolled up as coils layer-by-layer, with as many as a hundred loops.
Professor Zhong Lin Wang and colleagues made the nano-rings by a solid-vapour technique, starting with powders of zinc oxide, indium oxide and lithium carbonate in a horizontal tube furnace. Heating the materials to 1400[degrees]C in argon caused the mixture to deposit on a silicon ...