First results on laser-induced field emission from a CNT-based nanotip

被引:14
作者
Bionta, M. R. [1 ,2 ]
Chalopin, B. [1 ,2 ]
Masseboeuf, A. [3 ]
Chatel, B. [1 ,2 ]
机构
[1] Univ Toulouse, UPS, Lab Collis Agregats Reactivite, IRSAMC, F-31062 Toulouse 9, France
[2] CNRS, UMR 5589, F-31062 Toulouse, France
[3] CEMES CNRS, Toulouse 4, France
关键词
Nanotip; Carbon nanotube; Femtosecond laser; CHEMICAL-VAPOR-DEPOSITION; CARBON NANOTUBES; PYROLYTIC CARBON; ELECTRON-EMISSION; PHOTOEMISSION; NANOSTRUCTURES; TIP;
D O I
10.1016/j.ultramic.2014.11.027
中图分类号
TH742 [显微镜];
学科分类号
摘要
We present the first demonstration of ultrafast laser-induced field emission and measurement of the energy distribution of electrons from a nanotip based on a carbon nanotube (CNT). Our experimental setup extends the studies performed on conventional tungsten or gold tips by using this new innovative tip. The carbon tip consists of concentric carbon layers in the shape of a cone, and has been previously studied as a very good candidate for cold field emission. The first laser-induced field emission from a CNT-based nanotip has been observed and we measured the energy spectrum as well as the polarization dependance of the emission. We also characterize the damage threshold of the tip, when illuminated by a high repetition rate femtosecond laser. These first results are encouraging further studies of electron emission from CNT-based carbon nanotips. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:152 / 155
页数:4
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