Premium
Polarization‐Dependent Surface‐Enhanced Raman Spectroscopy of Isolated Silver Nanoaggregates
Author(s) -
Xu Hongxing,
Käll Mikael
Publication year - 2003
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200200544
Subject(s) - raman scattering , raman spectroscopy , polarization (electrochemistry) , dimer , surface enhanced raman spectroscopy , materials science , scattering , nanoparticle , spectroscopy , molecular physics , analytical chemistry (journal) , nanotechnology , chemistry , optics , physics , chromatography , quantum mechanics , organic chemistry
Ultrasensitive to nanogaps: Raman scattering from pairs of silver nanoparticles bound together by hemoglobin varies strongly with incident polarization. Experiments and electrodynamic calculations (see graphic) show that only that part of the incident field that is polarized parallel to the dimer axis generates intense surface‐enhanced Raman scattering (SERS). The results support the idea that nanogaps between particles are a key ingredient of ultrasensitive SERS analysis.