6533b824fe1ef96bd1281469
RESEARCH PRODUCT
Long Lived Acoustic Vibrational Modes of an Embedded Nanoparticle
Saviot LucienDaniel B. Murraysubject
PhysicsCondensed Matter - Materials ScienceContinuum (design consultancy)Materials Science (cond-mat.mtrl-sci)FOS: Physical sciencesGeneral Physics and AstronomyNanoparticle[ PHYS.COND.CM-GEN ] Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other]Molecular physicsMatrix (mathematics)Classical mechanicsMolecular vibrationBoundary value problemReduction (mathematics)Acoustic impedanceElectrical impedancedescription
Classical continuum elastic calculations show that the acoustic vibrational modes of an embedded nanoparticle can be lightly damped even when the longitudinal plane wave acoustic impedances $Z_o=\rho v_L$ of the nanoparticle and the matrix are the same. It is not necessary for the matrix to be less dense or softer than the nanoparticle in order to have long lived vibrational modes. Continuum boundary conditions do not always accurately reflect the microscropic nature of the interface between nanoparticle and matrix, and a multi-layer model of the interface reveals the possibility of additional reduction of mode damping.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-01-01 | Physical Review Letters |