8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-35-C7-38
Photoacoustic plasmon resonance spectra of Langmuir-Blodgett filmsY.S. Jiang1, S.Y. Zhang1, F. Qian2 and H.P. Shao1
1 Institute of Acoustics and Lab. of Modern Acoustics, Nanjing University, Nanjing 210093, China
2 Dept. of Physics, Southeast University, Nanjing 210018, China
The surface plasmon spectra of Langmuir-Blodgett (LB) films have been investigated by combining photoacoustic technique with resonant attenuated total reflection spectroscopy. By this technique, the experimental PA angular spectra of cadmium stearate LB films have been obtained. According to the electromagnetic theory and considering the anisotropic properties of LB films, as well as based on the experimental photoacoustic plasma resonance curves, we have determined the optical constants and thicknesses of the films by using numerical optimization method.
© EDP Sciences 1994