This article reviews the most recent progress in the synthesis of polar-surface dominated semi-conducting and piezoelectric ZnO nanostructures: including nanosprings, nanohelices, nanorings, nanobows and naodisks. These structures were formed by self-assembly of polar nanobelts/nanowires as driven by minimizing electrostatic energy owing to spontaneous polarization. The nanostructures could have novel applications in optoelectronics, sensors, transducers and resonators.
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Self-assembled nanoarchitectures of polar nanobelts/nanowires, Z. L.Wang J. Mater. Chem., 15 (2005) 1021-1024.