Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.



Thermal conductivity of Bi2Te3 nanowires: How size affects phonon scattering

Abstract

This work provides an in-depth study of how the thermal conductivity of stoichiometric [110] Bi2Te3 nanowires becomes affected when reducing its diameter from an experimental and theoretical point of view. The thermal conductivity was observed to decrease more than 70% (from 1.78±0.46 W/K·m to 0.52±0.35 W/K·m) when the diameter of the nanowire was reduced one order of magnitude (from 300 nm to 25 nm). The Kinetic-Collective model was used to understand such a reduction, which can be explained by the impact that the surface scattering has in the acoustic phonons. The smaller the diameter of the nanowires is, the larger the alteration in the mean free path of the low-frequency phonons is. The model agrees well with the experimental data and the reduction in the thermal conductivity of the nanowires can be explained in terms of an increment of phonon scattering.

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was accepted on 16 Apr 2017 and first published on 20 Apr 2017


Article type: Paper
DOI: 10.1039/C7NR02173A
Citation: Nanoscale, 2017, Accepted Manuscript
  •   Request permissions

    Thermal conductivity of Bi2Te3 nanowires: How size affects phonon scattering

    M. Muñoz Rojo, B. Abad, C. V. Manzano, P. Torres, X. Cartoixà, F. X. Alvarez and Marisol. S. Martín-González, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR02173A

Search articles by author