Piezoelectric and field emitted properties of controlled ZnO nanorods on CNT yarns
- Authors
- Seo, Mijeong; Jung, Yeonsu; Lim, Dongchan; Cho, Daehwan; Jeong, Youngjin
- Issue Date
- 1-Feb-2013
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- ZnO; Piezoelectric property; Field emission; Electrochemical deposition
- Citation
- MATERIALS LETTERS, v.92, pp.177 - 180
- Journal Title
- MATERIALS LETTERS
- Volume
- 92
- Start Page
- 177
- End Page
- 180
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/11351
- DOI
- 10.1016/j.matlet.2012.10.076
- ISSN
- 0167-577X
- Abstract
- ZnO nanorods were synthesized on carbon nanotube (CNT) yarns by an electrochemical deposition method. The grown ZnO shapes varied from a sharp cone-type nanorod to a hexagonal type nanorod according to the increase of counter electrodes. A hexagonal type nanorod changed about 0.3% of its static dimension when it was exposed to an external electric field. From an external pressure with a constant force is applied to the hexagonal type ZnO nanorods, a voltage was generated from 7.5 mV to 10 mV. A cone-type nanorod showed a remarkable field emission whose threshold voltage was as low as 1.5 V/mu m. As the results of piezoelectric and field emission tests, the ZnO nanorods on CNT yarn could be a useful material in the applications of a power generator and an emitter. (C) 2012 Elsevier B.V. All rights reserved.
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