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This content will become publicly available on November 12, 2014

Title: Frequency Resolved Nanoscale Chemical Imaging of 4,4'-Dimercaptostilbene on Silver

Non-resonant tip-enhanced Raman images of 4,4'-dimercaptostilbene on silver reveal that different vibrational resonances of the reporter are selectively enhanced at different sites on the metal substrate. Sequentially recorded images track molecular diffusion within the diffraction-limited laser spot which illuminates the substrate. In effect, the recorded time resolved (Δt = 10 s) pixelated images (25 nm x 8 cm-1) broadcast molecule-local field interactions which take place on much finer scales.
Authors:
 [1] ; ; ;  [1] ;  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Physical Sciences Division
Publication Date:
OSTI Identifier:
1164574
Report Number(s):
PNNL-SA-100249
Journal ID: ISSN 1932-7447; KC0301020
Grant/Contract Number:
AC05-76RL01830
Type:
Published Article
Journal Name:
Journal of Physical Chemistry. C
Additional Journal Information:
Journal Volume: 118; Journal Issue: 47; Journal ID: ISSN 1932-7447
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Raman Scattering; SERS; TERS; Nanoscale; Chemical Imaging; Local Field; Dimercaptostilbene