Acoustic vibrations in free-standing single-, bi-layer nanomembranes and patterned wires

Brillouin light scattering investigations of acoustic vibrations in freestanding membranes, soft‐hard bi‐layers and patterned wires are described. Studies of longitudinal and transverse standing wave resonances, the wave vector dependence of surface and guided waves as well as their hybridization wi...

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Bibliographic Details
Published in:Annalen der Physik 2011-01, Vol.523 (1-2), p.107-120
Main Authors: Bandhu, R.S., Sooryakumar, R., Bussmann, K.
Format: Article
Language:English
Subjects:
acoustic vibrations
Acoustics
Brillouin scattering
Brillouin zone
elastic properties
Light scattering
Membranes
nanomembranes
Silicon nitride
Standing waves
Vibration
Wire
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Summary:Brillouin light scattering investigations of acoustic vibrations in freestanding membranes, soft‐hard bi‐layers and patterned wires are described. Studies of longitudinal and transverse standing wave resonances, the wave vector dependence of surface and guided waves as well as their hybridization with flexural and dilational waves are presented. Size effects and the role of reduced dimensions on the acoustic behavior are investigated in soft rectangular polymeric wires on freestanding silicon nitride membranes. The mode frequencies and amplitudes are analyzed in terms of surface Green's functions and the xyz algorithm. Brillouin light scattering investigations of acoustic vibrations in freestanding membranes, soft‐hard bi‐layers and patterned wires are described. Studies of longitudinal and transverse standing wave resonances, the wave vector dependence of surface and guided waves as well as their hybridization with flexural and dilational waves are presented. …
ISSN:0003-3804
1521-3889
DOI:10.1002/andp.201000098