DocumentCode
2888505
Title
Photothermal heterodyne imaging and absorption spectroscopy of individual nonfluorescent nanoobjects
Author
Berciaud, Stéphane ; Lasne, David ; Blab, Gerhard A. ; Tamarat, Philippe ; Cognet, Laurent ; Lounis, Brahim
Author_Institution
Centre de Physique Moleculaire Optique et Hertzienne, CNRS, Talence, France
fYear
2005
fDate
12-17 June 2005
Firstpage
344
Abstract
An all-optical method called photothermal heterodyne imaging (PHI) is developed that allows for the detection of individual nano-objects such as gold nanoparticles with diameter down to 1.4 μm (67 atoms) as well as nonluminescent semiconductor nanocrystals. This observation of intrinsic size effects in the optical response of gold nanoparticles is analysed within the frame of Mie theory using a size-dependent surface damping term in the dielectric constant.
Keywords
gold; heterodyne detection; nanoparticles; nanotechnology; photothermal spectroscopy; Au; Mie theory; absorption spectroscopy; dielectric constant; gold nanoparticles; nonfluorescent nanoobjects; nonluminescent semiconductor nanocrystals; photothermal heterodyne imaging; size effects; surface damping; Absorption; Atom optics; Damping; Dielectric constant; Gold; Nanocrystals; Nanoparticles; Optical imaging; Optical mixing; Spectroscopy;
fLanguage
English
Publisher
ieee
Conference_Titel
Quantum Electronics Conference, 2005. EQEC '05. European
Print_ISBN
0-7803-8973-5
Type
conf
DOI
10.1109/EQEC.2005.1567509
Filename
1567509
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