Confined acoustic modes in nanoparticles

Y. Li; H. S. Lim; Z. K. Wang; S. C. Ng; M. H. Kuok

doi:10.1051/jp4:2005129011

Confined acoustic modes in nanoparticles

Y. Li^*
, H. S. Lim
, Z. K. Wang
, S. C. Ng
, M. H. Kuok

^*Corresponding author for this work

National University of Singapore

Research output: Contribution to journal › Conference article › peer-review

3 Scopus citations

Abstract

Brillouin scattering from aggregates of monodisperse polystyrene spheres has been measured as a function of their diameters (20 - 990nm). In this range of sphere sizes studied, confined acoustic modes and two types of bulk longitudinal acoustic modes are observed. One type exists within larger spheres (diameter > 700 nm), while the other propagates in aggregates of smaller spheres (diameter ≤ 80 nm) which are considered as polystyrene-air composites. The frequencies of the confined acoustic modes are found to be proportional to inverse sphere diameter, in accordance with Lamb's theory.

Original language	English
Pages (from-to)	51-54
Number of pages	4
Journal	Journal De Physique. IV : JP
Volume	129
DOIs	https://doi.org/10.1051/jp4:2005129011
State	Published - 2005
Externally published	Yes
Event	Proceedings - 34th Winter School on Wave and Quantum Acoustics - Ustron, Poland Duration: 28 Feb 2005 → 4 Mar 2005

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title = "Confined acoustic modes in nanoparticles",

abstract = "Brillouin scattering from aggregates of monodisperse polystyrene spheres has been measured as a function of their diameters (20 - 990nm). In this range of sphere sizes studied, confined acoustic modes and two types of bulk longitudinal acoustic modes are observed. One type exists within larger spheres (diameter > 700 nm), while the other propagates in aggregates of smaller spheres (diameter ≤ 80 nm) which are considered as polystyrene-air composites. The frequencies of the confined acoustic modes are found to be proportional to inverse sphere diameter, in accordance with Lamb's theory.",

author = "Y. Li and Lim, \{H. S.\} and Wang, \{Z. K.\} and Ng, \{S. C.\} and Kuok, \{M. H.\}",

year = "2005",

doi = "10.1051/jp4:2005129011",

language = "英语",

volume = "129",

pages = "51--54",

journal = "Journal De Physique. IV : JP",

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publisher = "Springer Verlag",

note = "Proceedings - 34th Winter School on Wave and Quantum Acoustics ; Conference date: 28-02-2005 Through 04-03-2005",

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AU - Li, Y.

AU - Lim, H. S.

AU - Wang, Z. K.

AU - Ng, S. C.

AU - Kuok, M. H.

PY - 2005

Y1 - 2005

N2 - Brillouin scattering from aggregates of monodisperse polystyrene spheres has been measured as a function of their diameters (20 - 990nm). In this range of sphere sizes studied, confined acoustic modes and two types of bulk longitudinal acoustic modes are observed. One type exists within larger spheres (diameter > 700 nm), while the other propagates in aggregates of smaller spheres (diameter ≤ 80 nm) which are considered as polystyrene-air composites. The frequencies of the confined acoustic modes are found to be proportional to inverse sphere diameter, in accordance with Lamb's theory.

AB - Brillouin scattering from aggregates of monodisperse polystyrene spheres has been measured as a function of their diameters (20 - 990nm). In this range of sphere sizes studied, confined acoustic modes and two types of bulk longitudinal acoustic modes are observed. One type exists within larger spheres (diameter > 700 nm), while the other propagates in aggregates of smaller spheres (diameter ≤ 80 nm) which are considered as polystyrene-air composites. The frequencies of the confined acoustic modes are found to be proportional to inverse sphere diameter, in accordance with Lamb's theory.

UR - https://www.scopus.com/pages/publications/33645077346

U2 - 10.1051/jp4:2005129011

DO - 10.1051/jp4:2005129011

M3 - 会议文章

AN - SCOPUS:33645077346

SN - 1155-4339

VL - 129

SP - 51

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JO - Journal De Physique. IV : JP

JF - Journal De Physique. IV : JP

T2 - Proceedings - 34th Winter School on Wave and Quantum Acoustics

Y2 - 28 February 2005 through 4 March 2005

ER -

Confined acoustic modes in nanoparticles

Abstract

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