Share Email Print

Proceedings Paper

Controlling the nanopore fabrication using high energy electron beam exposure
Author(s): S. S. Choi; M. J. Park; T. Yamaguchi; N. K. Park
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Recently there has been tremendous interest about the dynamical sequence of fabrication of the solid state nanopore due to its capability of the nanosize solid state biosensor as a single molecule sensor. Depending upon the instruments such as transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM), the dynamics of nanopore formation present different physical mechanisms. In this report, formation of the nanopores was examined. Metallic nanopores with ~ 50 nm diameter on top of the oxide pyramid were fabricated using conventional Si microfabrication techniques followed by wet isotropic etching of the oxide; sputter metal deposition followed by the focused ion beam (FIB) techniques. No shrinking phenomena were observed for the nanopore diameter greater than 50 nm under electron beam irradiation using TEM. However, for high scanning electron beam irradiation using FESEM, shrinking of the Au nanopore was always observed. We do believe that these phenomena can be attributed to the liquid phase surface modification for TEM electron beam and adiabatic solid state phase surface modification for high scanning FESEM. For a huge amount of energy input from high scan rate and the poor thermal conduction to its surrounding area, the energy spike inside the electron penetration area would occur. However, a TEM electron beam irradiation without repetitive scan can provide the liquid phase surface modification.

Paper Details

Date Published: 21 February 2013
PDF: 6 pages
Proc. SPIE 8597, Plasmonics in Biology and Medicine X, 859708 (21 February 2013); doi: 10.1117/12.2000252
Show Author Affiliations
S. S. Choi, Sun Moon Univ. (Korea, Republic of)
M. J. Park, Sun Moon Univ. (Korea, Republic of)
T. Yamaguchi, Sun Moon Univ. (Korea, Republic of)
N. K. Park, Seoul National Univ. (Korea, Republic of)

Published in SPIE Proceedings Vol. 8597:
Plasmonics in Biology and Medicine X
Tuan Vo-Dinh; Joseph R. Lakowicz, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?