Toward a laser assisted wide‐angle tomographic atom‐probe
Toward a laser assisted wide‐angle tomographic atom‐probe
复制标题
激光辅助广角断层扫描原子探针
DOI：
10.1002/sia.2491
复制
发表时间：
2007
影响因子：
1.7
通讯作者：
M. Brunel
中科院分区：
文献类型：
--
作者：
B. Deconihout;F. Vurpillot;B. Gault;G. D. Costa;M. Bouet;A. Bostel;D. Blavette;A. Hideur;G. Martel;M. Brunel
本文报告的初步结果表明，飞秒激光脉冲的使用，使单原子的场蒸发，从一个尖状的形状，没有显着的样品加热试样。结果表明，场蒸发是由激光场，这是增强的亚波长尺寸的尖端的辅助。它还表明，激光脉冲导致高质量分辨率，使使用能量补偿装置在广角三维原子探针无效。此外，还介绍了满足广角3DAP要求的位置敏感探测器的性能。然后讨论了第三代断层扫描原子探针的出现，该探针具有（i）广角分析能力和（ii）扩展到不良导电或绝缘材料的应用领域。版权所有© 2007约翰威利父子有限公司。
This paper reports preliminary results showing that the use of femtosecond laser pulses enables the field evaporation of single atoms, from specimens with a tip‐like shape, without significant specimen heating. It is shown that the field evaporation is assisted by the laser field, which is enhanced by the sub wavelength dimensions of the tip. It is also shown that laser pulsing leads to a high mass resolution, making the use of energy compensating devices in a wide‐angle three‐dimensional atom‐probe ineffectual. In addition, the performances of a position‐sensitive detector that fulfills the wide‐angle 3DAP requirements are presented. The emergence of the third generation of tomographic atom‐probe with (i) wide‐angle analysis capabilities and (ii) a field of application that is extended to poor conductive or insulating materials is then discussed. Copyright © 2007 John Wiley & Sons, Ltd.