For nanoelectronics, biotechnology
Single-crystal seamless nanoring made of piezoelectric zinc oxide. The ring diameter is about 3 microns and the thickness is about 15 nanometers.
Credit: Zhong L. Wang research group
An article to be published in the February 27 issue of the journal Science introduces "nanorings" as the newest member of a growing family of nanometer-scale structures based on single crystals of zinc oxide, a semiconducting and piezoelectric material that has important technological applications.
The rings, complete circles formed by a spontaneous self-coiling process, could serve as nanometer-scale sensors, resonators and transducers – and provide a unique test bed for studying piezoelectric effects and other phenomena at the small scale. The nanorings join "nanobelts" and "nanosprings" in a family of zinc oxide structures produced by researchers at the Georgia Institute of Technology using a high-temperature solid vapor process.
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