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氩等离子体处理的超尖锐α-Fe₂O₃纳米薄片的增强场发射

Enhanced Field Emission from Argon Plasma-Treated Ultra-sharp alpha-Fe(2)O(3) Nanoflakes.

作者信息

Zheng Z, Liao L, Yan B, Zhang J X, Gong Hao, Shen Z X, Yu T

出版信息

Nanoscale Res Lett. 2009 Jun 12;4(9):1115-1119. doi: 10.1007/s11671-009-9363-1.

DOI:10.1007/s11671-009-9363-1
PMID:20596290
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2894362/
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.

摘要

通过一种简单的热氧化方法合成了赤铁矿纳米薄片，并进一步用氩等离子体进行处理。研究了氩等离子体对纳米薄片的形态和晶体结构的影响。观察到经等离子体处理的纳米薄片的场致电子发射有显著增强。透射电子显微镜研究表明，等离子体处理有效地去除了非晶涂层，并在纳米薄片表面形成了大量的亚尖端，据信这些亚尖端有助于发射增强。这项工作表明，等离子体处理技术可能是改善纳米结构场发射性能的直接手段。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/a6358fa1bc09/1556-276X-4-1115-5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/144ea1daee17/1556-276X-4-1115-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/417c561d0eb0/1556-276X-4-1115-2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/d6fb7cf0f82c/1556-276X-4-1115-3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/16ed1681a4d1/1556-276X-4-1115-4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/a6358fa1bc09/1556-276X-4-1115-5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/144ea1daee17/1556-276X-4-1115-1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/417c561d0eb0/1556-276X-4-1115-2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/d6fb7cf0f82c/1556-276X-4-1115-3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/16ed1681a4d1/1556-276X-4-1115-4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c21/3244125/a6358fa1bc09/1556-276X-4-1115-5.jpg

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