Literatura académica sobre el tema "Processus opto-mécanique"
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Tesis sobre el tema "Processus opto-mécanique"
Vernier, Charles. "Étude de nanocristaux métalliques anisotropes par spectroscopies optique et vibrationnelle". Electronic Thesis or Diss., Sorbonne université, 2024. https://theses.hal.science/tel-04829448.
Texto completoWe use both electronic microscopy and spectroscopic methods (optical and vibrationnal) to caracterize metallic nanoparticles. Nanoparticules with a narrow size dispersion were synthesized according to state of the art protocols. These nanoaprticles (silver nanocubes, gold nanorods, gold-core silver-shell nanoarods) were first caracterized by TEM and HRTEM. The optical properties of these nanoparticles were studied by UV-visible-NIR absorption spectroscopy and the parameters influencing their localized surface plasmon resonance (size, shape, composition) were studied and compared with numerical calculations by discrete dipole approximation. The broadening of the longitudinal localized surface plasmon of gold nanorods due to the aspect ratio distribution is shown. Nanoparticules also confine acoustic waves. This effect is studdied by low frequency Raman scattering. Confined acoustic waves depend on the size, the shape and most importantly on the cristallinity of the nanoparticules. Low frequency Raman spectra of nanoparticles of similar size and shape but of varying cristallinity (monocristalline gold nanorods and polycristalline gold nanorods) are completely different : the quadrupolar mode of the polycristals is split into two modes for the monocrystals. Finally, this work brings experimental data to groups who try to model low frequency Raman spectra of anisotropic nanoparticles and take into account acousto-plasmonic coupling
Libros sobre el tema "Processus opto-mécanique"
Vukobratovich, Daniel y Paul Yoder. Opto-Mechanical Systems Design, Two Volume Set. Taylor & Francis Group, 2018.
Buscar texto completoVukobratovich, Daniel y Paul Yoder. Opto-Mechanical Systems Design, Two Volume Set. Taylor & Francis Group, 2018.
Buscar texto completoVukobratovich, Daniel y Paul Yoder. Opto-Mechanical Systems Design, Two Volume Set. Taylor & Francis Group, 2018.
Buscar texto completoOpto-Mechanical Systems Design, Two Volume Set. Taylor & Francis Group, 2018.
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