TY - JOUR
T1 - Bias voltage-dependent STM-tip-enhanced Raman spectroscopy of benzenethiol-modified gold nanoplates
AU - Fujita, Yasuhiko
AU - Horimoto, Noriko Nishizawa
AU - Kajimoto, Shinji
AU - Fukumura, Hiroshi
N1 - Funding Information:
The authors thank P. Brodard (University of Applied Science, Fribourg) and M. Yoshidome for the development and construction of the TERS instrument. This work was supported by JSPS KAKENHI Grant Number 16072101 and 22750004 .
PY - 2013
Y1 - 2013
N2 - We measured tip-enhanced Raman scattering (TERS) and photoluminescence (PL) spectra of benzenethiol-modified gold nanoplates fixed on graphite, by using a gold tip for scanning tunneling microscopy (STM) measurements. With increasing bias voltage between the tip and the nanoplates, the Raman intensities of benzenethiol gradually decreased, while the PL intensities decreased first and then increased. This implied that relatively low bias voltages are suitable for STM-TERS measurements. Both PL mapping and STM images of the nanoplates were simultaneously obtained. The PL mapping images showed that field enhancement by gap-mode plasmons between the tip and the nanoplates depended on their configuration.
AB - We measured tip-enhanced Raman scattering (TERS) and photoluminescence (PL) spectra of benzenethiol-modified gold nanoplates fixed on graphite, by using a gold tip for scanning tunneling microscopy (STM) measurements. With increasing bias voltage between the tip and the nanoplates, the Raman intensities of benzenethiol gradually decreased, while the PL intensities decreased first and then increased. This implied that relatively low bias voltages are suitable for STM-TERS measurements. Both PL mapping and STM images of the nanoplates were simultaneously obtained. The PL mapping images showed that field enhancement by gap-mode plasmons between the tip and the nanoplates depended on their configuration.
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U2 - 10.1016/j.cplett.2013.07.028
DO - 10.1016/j.cplett.2013.07.028
M3 - Article
AN - SCOPUS:84883240616
SN - 0009-2614
VL - 582
SP - 110
EP - 114
JO - Chemical Physics Letters
JF - Chemical Physics Letters
ER -