Local electric field and scattering cross section of Ag nanoparticles under surface plasmon resonance by finite difference time domain method
Article Abstract:
Local electric field and scattering cross section on Ag nanoparticles are evaluated by the FDTD (finite difference time domain) method with respect to single-molecule sensitivity (SMS) in SERS (surface - enhanced Raman scattering). Vast enhancement of >300 - fold (in amplitude enhancement) in the SMS level was obtained at a junction between two connecting Ag particles with various shapes and sizes in addition to an edge of isolated triangular cylinders.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
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Thermal Activation of blinking in SERS signal
Article Abstract:
A study is conducted to examine the temperature dependence of blinking in SERS signals, which is abrupt repeated intensity and peak frequency fluctuation. It is found that the blinking observed at room temperature is suppressed by cooling to 77 K for one-third to one-fourth of the particles and recovered by warming to RT.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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Kinetics and mechanism of the formation of Ag nanoparticles by electrochemical techniques: A Plasmon and cluster time-resolved spectroscopic study
Article Abstract:
The formation of Ag nanoparticles by electrochemical techniques is investigated through a time-resolved UV-vis spectroscopy study. The formation of Ag(super 2+)(sub 4) clusters is suggested as the main precursors to the particle formation.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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