Title :
Spontaneous polarization induced growth of ZnO nanostructures
Author :
Kong, Xiang Yang ; Wang, Zhong Lin
Author_Institution :
Sch. of Mater. Sci. & Eng., Shanghai Jiao Tong Univ., China
Abstract :
We report the success of controlled synthesis of freestanding ZnO nanobelts whose surfaces are dominated by the large polar surfaces. The nanobelts grow along the - axis, their large top/bottom surfaces are the ±(0001) polar planes, and the side surfaces are (01 | 0). Owing to the positive and negative ionic charges on the zinc- and oxygen-terminated ±(0001) surfaces, respectively, the nanobelts form multi-loops of nanohelixes/nanosprings for the sake of reducing electrostatic energy introduced by the polar surfaces. The polar surface dominated ZnO nanobelts/nanohelixes are likely to be useful building blocks for nanodevices in MHMS/NEMS or biosensors.
Keywords :
II-VI semiconductors; dielectric polarisation; nanostructured materials; surface energy; surface structure; zinc compounds; MHMS; NEMS; ZnO; ZnO nanobelt; ZnO nanostructure; biosensor; electrostatic energy; negative ionic charge; polar planes; positive ionic charge; spontaneous polarization induced growth; Anisotropic magnetoresistance; Electrostatics; Heating; Nanostructures; Nanowires; Polarization; Scanning electron microscopy; Temperature; Transmission electron microscopy; Zinc oxide;
Conference_Titel :
Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on
Print_ISBN :
0-7803-8511-X
DOI :
10.1109/ICSICT.2004.1436650