2005/07/31 by Stéphane Berciaud, David Lasne, Gerhard A. Blab +2 · 1 citation
Biochemistry, Genetics and Molecular Biology · Engineering · Materials Science · Physics and Astronomy · #Gold and Silver Nanoparticles Synthesis and Applications #Photoacoustic and Ultrasonic Imaging #Spectroscopy Techniques in Biomedical and Chemical Research #cond-mat.other #physics.atm-clus #physics.optics
paper · pdf · doi:10.1103/physrevb.73.045424
published as Physical Review B 73 (20/01/2006) 045424
openalex publication_date 2006/01/20 · arxiv created 2007/04/28 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We present the theoretical and detailed experimental characterizations of photothermal heterodyne imaging. An analytical expression of the photothermal heterodyne signal is derived using the theory of light scattering from a fluctuating medium. The amplitudes of the signals detected in the backward and forward configurations are compared and their frequency dependences are studied. The application of the photothermal heterodyne detection technique to the absorption spectroscopy of individual gold nanoparticles is discussed and the detection of small individual silver nanoparticles is demonstrated.