TY - GEN
T1 - Transport properties of guided acoustic phonon modes in semiconductor nanorods
AU - Sun, Chi Kuang
AU - Yang, Szu Chi
AU - Wu, Yueh Chun
AU - Mante, Pierre Adrien
AU - Shih, Min Hsiung
PY - 2015/1/1
Y1 - 2015/1/1
N2 - Quantization and abnormality of thermal conductance was discovered in low-dimensional nanostructures, where guided modes were proposed to contribute the universal quantum. However, no direct observation of the guided-mode propagation inside 1D nanostructures was thought possible, which is critical for quantitative transport-property studies. In this talk, we report direct observation of guided acoustic-phonon mode transportation inside semiconductor nanorods. The observed dispersion behavior agrees well with our theory. Moreover, owing to the dimensional discontinuousness, ≧ 50% acoustic wave reflection at the nanorod/substrate interface is found, which would play a crucial role in heat dissipation and thermal management in future nanodevices.
AB - Quantization and abnormality of thermal conductance was discovered in low-dimensional nanostructures, where guided modes were proposed to contribute the universal quantum. However, no direct observation of the guided-mode propagation inside 1D nanostructures was thought possible, which is critical for quantitative transport-property studies. In this talk, we report direct observation of guided acoustic-phonon mode transportation inside semiconductor nanorods. The observed dispersion behavior agrees well with our theory. Moreover, owing to the dimensional discontinuousness, ≧ 50% acoustic wave reflection at the nanorod/substrate interface is found, which would play a crucial role in heat dissipation and thermal management in future nanodevices.
UR - http://www.scopus.com/inward/record.url?scp=84971247640&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:84971247640
T3 - 22nd International Congress on Sound and Vibration, ICSV 2015
BT - 22nd International Congress on Sound and Vibration, ICSV 2015
PB - International Institute of Acoustics and Vibrations
T2 - 22nd International Congress on Sound and Vibration, ICSV 2015
Y2 - 12 July 2015 through 16 July 2015
ER -