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RESEARCH PRODUCT

Acoustic vibrations of embedded spherical nanoparticles

Saviot LucienDaniel B. Murray

subject

Materials sciencebusiness.industryPhononPhysics::Medical PhysicsPlane wavePhysics::OpticsDiamondAcoustic waveengineering.materialCondensed Matter PhysicsMolecular physicsAtomic and Molecular Physics and OpticsPoisson's ratioElectronic Optical and Magnetic MaterialsVibrationsymbols.namesakeOpticsSpeed of soundMolecular vibrationengineeringsymbolsbusiness

description

Abstract A solid-matrix-embedded spherical nanoparticle has acoustic vibrational frequencies which are shifted and damped relative to modes of a free sphere. Not only the longitudinal plane wave acoustic impedances, but also the Poisson ratios of nanoparticle and matrix are important in determining the Q-factor of the “breathing” mode, for which frequencies and Q-factors with different material combinations are presented. High matrix sound speed (e.g. silica, titania, alumina, diamond) increases Q.

yearjournalcountryeditionlanguage
2005-02-01Physica E: Low-dimensional Systems and Nanostructures
https://doi.org/10.1016/j.physe.2004.08.091