Confined acoustic vibrations in piezoelectric GaN nanorods

Pierre Adrien Mante, Hung Pin Chen, Yueh Chun Wu, Cheng Ying Ho, Li Wei Tu, Jinn Kong Sheu, Chi Kuang Sun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Confined acoustic vibrations of GaN nanorods have been observed using ultrafast pump-probe spectroscopy. Depending on the fabrication method, the geometrical properties of the nanorods are different and the detection of a given vibration mode can be favored. In bottom-up fabrication, the extensional modes are detected. The detection mechanism of these confined acoustic modes is briefly presented. Breathing modes are more easily detected in top-down fabrication. From the observation of the breathing modes, the diameter dependent elastic properties are extracted. The influence of the surrounding on the confined vibration is also studied.

Original languageEnglish
Title of host publicationPHONONS 2012 - XIV International Conference on Phonon Scattering in Condensed Matter
Pages2-8
Number of pages7
Edition1
DOIs
Publication statusPublished - 2012 Dec 1
Event14th International Conference on Phonon Scattering in Condensed Matter, PHONONS 2012 - Ann Arbor, MI, United States
Duration: 2012 Jul 82012 Jul 12

Publication series

NameAIP Conference Proceedings
Number1
Volume1506
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other14th International Conference on Phonon Scattering in Condensed Matter, PHONONS 2012
CountryUnited States
CityAnn Arbor, MI
Period12-07-0812-07-12

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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