Impact of Porosity and Boundary Scattering on Thermal Transport in Diameter-Modulated Nanowires

2021 ◽  
Author(s):  
Abhinav Malhotra ◽  
Gozde Tutuncuoglu ◽  
Sampath Kommandur ◽  
Patrick Creamer ◽  
Aravindh Rajan ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Boundary Scattering

Thermal Transport in Few-Quintuple Bi2Te3 Thin Films and Nanoribbons

2011 ◽  
Author(s):  
Bo Qiu ◽  
Xiulin Ruan
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Molecular Dynamics ◽  
Temperature Dependence ◽  
Thermal Transport ◽  
Room Temperature ◽  
Phonon Scattering ◽  
Md Simulations ◽  
Boundary Scattering ◽  
Nanoporous Films

In this work, thermal conductivity of perfect and nanoporous few-quintuple Bi2Te3 thin films as well as nanoribbons with perfect and zig-zag edges is investigated using molecular dynamics (MD) simulations with Green-Kubo method. We find minimum thermal conductivity of perfect Bi2Te3 thin films with three quintuple layers (QLs) at room temperature, and we believe it originates from the interplay between inter-quintuple coupling and phonon boundary scattering. Nanoporous films and nanoribbons are studied for additional phonon scattering channels in suppressing thermal conductivity. With 5% porosity in Bi2Te3 thin films, the thermal conductivity is found to decrease by a factor of 4–6, depending on temperature, comparing to perfect single QL. For nanoribbons, width and edge shape are found to strongly affect the temperature dependence as well as values of thermal conductivity.

scholarly journals Phonon-boundary scattering and thermal transport in AlxGa1−xN: Effect of layer thickness

2020 ◽  
Vol 117 (25) ◽  
pp. 252102
Author(s):  
Dat Q. Tran ◽  
Rosalia Delgado-Carrasco ◽  
John F. Muth ◽  
Tania Paskova ◽  
Muhammad Nawaz ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Thermal Transport ◽  
Boundary Scattering

scholarly journals Publisher's Note: “Phonon-boundary scattering and thermal transport in AlxGa1−xN: Effect of layer thickness” [Appl. Phys Lett. 117, 252102 (2020)]

2021 ◽  
Vol 118 (10) ◽  
pp. 109902
Author(s):  
Dat Q. Tran ◽  
Rosalia Delgado-Carrascon ◽  
John F. Muth ◽  
Tania Paskova ◽  
Muhammad Nawaz ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Thermal Transport ◽  
Boundary Scattering

Revisiting Boundary Scattering in Thermal Transport at the Nanometer Scale

2009 ◽  
Author(s):  
Sanjiv Sinha
Keyword(s):  
Thermal Transport ◽  
Recent Progress ◽  
Phonon Scattering ◽  
Volume Ratio ◽  
Nanometer Scale ◽  
Boundary Scattering ◽  
Nano Structures ◽  
Thermoelectric Energy ◽  
The Impact ◽  
Recent Experimental Work

Understanding and exploiting thermal transport phenomena at the nanometer scale can lead to improved thermoelectric energy conversion, novel NEMs-based sensors and facilitate the scaling of semiconductor devices to atomistic scales. The increased surface area to volume ratio in micro- and nano-structures leads to the dominance of boundary scattering. Recent experimental work suggests that the impact is even more than previously understood. This paper reviews recent progress in modeling phonon scattering at rough surfaces.

scholarly journals Erratum: “Phonon-boundary scattering and thermal transport in AlxGa1−xN: Effect of layer thickness” [Appl. Phys. Lett. 117, 252102 (2020)]

2021 ◽  
Vol 118 (18) ◽  
pp. 189901
Author(s):  
Dat Q. Tran ◽  
Rosalia Delgado-Carrascon ◽  
John F. Muth ◽  
Tania Paskova ◽  
Muhammad Nawaz ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Thermal Transport ◽  
Boundary Scattering

THERMAL TRANSPORT IN POLYMERS

2014 ◽  
Vol 17 (N/A) ◽  
pp. 485-520 ◽  
Author(s):  
Asegun Henry
Keyword(s):  
Thermal Transport
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