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 / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)


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
Number of pages7
Publication statusPublished - 1 Dec 2012
Externally publishedYes
Event14th International Conference on Phonon Scattering in Condensed Matter, PHONONS 2012 - Ann Arbor, MI, United States
Duration: 8 Jul 201212 Jul 2012

Publication series

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


Conference14th International Conference on Phonon Scattering in Condensed Matter, PHONONS 2012
Country/TerritoryUnited States
CityAnn Arbor, MI


  • bottom-up
  • confined acoustic vibrations
  • GaN nanorods
  • mechanical properties
  • top-down

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this