Mapping the plasmon response of Ag nanoislands on graphite at 100 nm resolution with scanning probe energy loss spectroscopy

Shane Murphy, Karl Bauer, Peter Sloan, James Lawton, Lin Tang, R Palmer

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We demonstrate plasmon mapping of Ag nanostructures on graphite using scanning probe energy loss spectroscopy (SPELS) with a spatial resolution of 100 nm. In SPELS, an STM tip is used as a localized source of field-emitted electrons to probe the sample surface. The energy loss spectrum of the backscattered electrons is measured to provide a chemical signature of the surface under the tip. We acquire three images simultaneously with SPELS: i) constant-current field-emission images, which provide topographical information; ii) backscattered electron images, which display material contrast; and iii) SPELS images, where material-dependent features such as plasmons are mapped.
Original languageEnglish
Article number126601
JournalApplied Physics Express
Volume8
DOIs
Publication statusPublished - 13 Nov 2015

Fingerprint Dive into the research topics of 'Mapping the plasmon response of Ag nanoislands on graphite at 100 nm resolution with scanning probe energy loss spectroscopy'. Together they form a unique fingerprint.

  • Cite this