In situ Observation of Morphological Change in CdTe Nano- and Submicron Wires
SCIE
SCOPUS
- Title
- In situ Observation of Morphological Change in CdTe Nano- and Submicron Wires
- Authors
- Davami, K; Ghassemi, HM; Sun, XH; Yassar, RS; Lee, JS; Meyyappan, M
- Date Issued
- 2011-10-28
- Publisher
- IOP
- Abstract
- We report growth and characterization of CdTe wires 30-400 nm in diameter by the vapor-liquid-solid technique. Individual nanowires were placed on a movable piezotube, which allowed three-dimensional motion toward a scanning tunneling microscope (STM). A bias was applied to the STM tip in contact with the nanowire, and the morphological changes due to Joule heating were observed in situ using a transmission electron microscope (TEM) in real time. For thick CdTe wires (d > similar to 150 nm), the process results in the growth of superfine nanowires (SFNWs) of 2-4 nm diameter on the surface of the wire. Smaller diameter nanowires, in contrast, disintegrate under the applied bias before the complete evolution of SFNWs on the surface.
- Keywords
- NANOWIRES; TRANSPORT; ARRAYS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/17048
- DOI
- 10.1088/0957-4484/22/43/435204
- ISSN
- 0957-4484
- Article Type
- Article
- Citation
- NANOTECHNOLOGY, vol. 22, no. 43, page. 435204-1 - 435204-6, 2011-10-28
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- There are no files associated with this item.
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