Nanoscopic studies investigated by hybrid SNOM STM

Citation
K. Nakajima et al., Nanoscopic studies investigated by hybrid SNOM STM, APPL SURF S, 145, 1999, pp. 520-524
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
APPLIED SURFACE SCIENCE
ISSN journal
01694332 → ACNP
Volume
145
Year of publication
1999
Pages
520 - 524
Database
ISI
SICI code
0169-4332(199904)145:<520:NSIBHS>2.0.ZU;2-3
Abstract
In order to improve the spatial resolution in scanning near-field optical m icroscopy (SNOM), we designed a hybrid system of illumination mode SNOM int egrated with scanning tunnelling microscopy (STM) by introducing a metal-co ated optical fiber tip with a nanometer-scale aperture. The aperture is als o covered with a thin metal layer, thus the top of the aperture acts as an STM tip. We employed several materials to show the capability of our hybrid SNOM/STM system as a tool to investigate nanoscopic phenomena. We present a simultaneous SNOM/STM imaging of Bu(111), where the SNOM image has a late ral resolution of the order of nanometers, quite comparable to that of the STM image. An azobenzene dye molecule embedded in liquid crystalline cyanob iphenyl molecules on MoS2 was also investigated. (C) 1999 Elsevier Science B.V. All rights reserved.