TY - JOUR
T1 - Simulations of the Near-Field Enhancement on AFM Tip Irradiated by Annular Laser Beam
AU - Lu, Xiwen
AU - Yang, Lijun
AU - Xie, Hui
AU - Yang, Zhan
AU - Cui, Jianlei
AU - Wang, Yang
N1 - Publisher Copyright:
© 2002-2012 IEEE.
PY - 2019
Y1 - 2019
N2 - The near-field enhancement underneath the AFM tip irradiated by a laser beam is widely utilized in various nanofabrication techniques, such as nano-welding, nano-manipulation, nano-etching and so on. In this paper, a numerical model of near-field enhancement on AFM tip irradiated by annular laser beam is established using COMSOL Multiphysics. The results show that when the AFM tip is irradiated by annular laser beam, strong near-field enhancement is induced at the apex of the tip. The field distribution curve with the substrate presents a saddle shape, which demonstrates that the annular beam irradiated the AFM tip produce an extremely high near-field enhancement between the particle and the tip. In addition, the results indicate that when the AFM tip is irradiated by the annular laser with higher frequency, the near-field enhancement underneath the apex of the tip increases correspondingly. Moreover, when the irradiation angle is 60 Deg and the irradiation distance is 65 nm, the near-field enhancement reaches the peak. Based on the numerical simulation of the near-field enhancement, the system of the AFM tip irradiated by annular laser beam can be anticipated for further application in the field of nanofabrication.
AB - The near-field enhancement underneath the AFM tip irradiated by a laser beam is widely utilized in various nanofabrication techniques, such as nano-welding, nano-manipulation, nano-etching and so on. In this paper, a numerical model of near-field enhancement on AFM tip irradiated by annular laser beam is established using COMSOL Multiphysics. The results show that when the AFM tip is irradiated by annular laser beam, strong near-field enhancement is induced at the apex of the tip. The field distribution curve with the substrate presents a saddle shape, which demonstrates that the annular beam irradiated the AFM tip produce an extremely high near-field enhancement between the particle and the tip. In addition, the results indicate that when the AFM tip is irradiated by the annular laser with higher frequency, the near-field enhancement underneath the apex of the tip increases correspondingly. Moreover, when the irradiation angle is 60 Deg and the irradiation distance is 65 nm, the near-field enhancement reaches the peak. Based on the numerical simulation of the near-field enhancement, the system of the AFM tip irradiated by annular laser beam can be anticipated for further application in the field of nanofabrication.
KW - COMSOL Multiphysics simulation
KW - Near-field enhancement
KW - annular laser beam
KW - nanofabrication
UR - https://www.scopus.com/pages/publications/85073068469
U2 - 10.1109/TNANO.2019.2938614
DO - 10.1109/TNANO.2019.2938614
M3 - 文章
AN - SCOPUS:85073068469
SN - 1536-125X
VL - 18
SP - 979
EP - 982
JO - IEEE Transactions on Nanotechnology
JF - IEEE Transactions on Nanotechnology
M1 - 8833516
ER -