Nano Archive

Enhanced Field Emission from Argon Plasma-Treated Ultra-sharp a-Fe2O3 Nanoflakes

Zheng, Z. and Liao, L. and Yan, B. and Zhang, J. X. and Gong, Hao and Shen, Z. X. and Yu, T. (2009) Enhanced Field Emission from Argon Plasma-Treated Ultra-sharp a-Fe2O3 Nanoflakes. Nanoscale Research Letters, 4 (9). pp. 1115-1119. ISSN 1931-7573 (Print) 1556-276X (Online)

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Abstract

Hematite nanoflakes have been synthesized by a simple heat oxide method and further treated by Argon plasmas. The effects of Argon plasma on the morphology and crystal structures of nanoflakes were investigated. Significant enhancement of field-induced electron emission from the plasma-treated nanoflakes was observed. The transmission electron microscopy investigation shows that the plasma treatment effectively removes amorphous coating and creates plenty of sub-tips at the surface of the nanoflakes, which are believed to contribute the enhancement of emission. This work suggests that plasma treatment technique could be a direct means to improve field-emission properties of nanostructures.

Item Type:Article
Uncontrolled Keywords:Field emission - Metal oxide - Plasma treated
Subjects:Physical Science > Nanophysics
Analytical Science > Metrology and standards in nanotechnology
ID Code:6941
Deposited By:Lesley Tobin
Deposited On:15 Sep 2009 15:33
Last Modified:15 Sep 2009 15:33

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