Abstract
Growth of (0001) facet-dominated, free-standing, piezoelectric zinc oxide (ZnO) nanostructures is challenged by the divergence of the surface energy due to intrinsic polarization. By controlling growth kinetics, we show the success of growing nanobelt-based novel structures whose surfaces are dominated by the polarized ±(0001) facets. Owing to the positive and negative ionic charges on the zinc- and oxygen-terminated ±(0001) surfaces, respectively, a spontaneous polarization is induced across the nanobelt thickness. As a result, right-handed helical nanostructures and nanorings are formed by rolling up single-crystal nanobelts; this phenomenon is attributed to a consequence of minimizing the total energy contributed by spontaneous polarization and elasticity. The polar-surface-dominated ZnO nanobelts are likely to be an ideal system for understanding piezoelectricity and polarization-induced ferroelectricity at nanoscale; and they could have applications as one-dimensional nanoscale sensors, transducers, and resonators.
Keywords
PiezoelectricityMaterials scienceNanostructurePolarization (electrochemistry)Nanoscopic scaleIonic bondingNanowireFerroelectricityNanotechnologyResonatorCondensed matter physicsNanogeneratorSurface energyFlexoelectricityOptoelectronicsChemical physicsChemistryDielectricComposite materialIonPhysics
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Publication Info
- Year
- 2003
- Type
- article
- Volume
- 3
- Issue
- 12
- Pages
- 1625-1631
- Citations
- 1102
- Access
- Closed
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Cite This
Xiangyang Kong,
Zhong Lin Wang
(2003).
Spontaneous Polarization-Induced Nanohelixes, Nanosprings, and Nanorings of Piezoelectric Nanobelts.
Nano Letters
, 3
(12)
, 1625-1631.
https://doi.org/10.1021/nl034463p
Identifiers
- DOI
- 10.1021/nl034463p