scholarly journals Measurement of anisotropic thermal conductivity of a dense forest of nanowires using the 3ω method

2018 ◽  
Vol 89 (8) ◽  
pp. 084902 ◽  
Author(s):  
Dhruv Singhal ◽  
Jessy Paterson ◽  
Dimitri Tainoff ◽  
Jacques Richard ◽  
Meriam Ben-Khedim ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
3Ω Method ◽  
Dense Forest ◽  
Anisotropic Thermal Conductivity

Anisotropic Thermal Conductivity of a Si/Ge Quantum Dot Superlattice

2000 ◽  
Author(s):  
Theodorian Borca-Tasciuc ◽  
Weili Liu ◽  
Jianlin Liu ◽  
Kang L. Wang ◽  
Gang Chen
Keyword(s):  
Thermal Conductivity ◽  
Quantum Dots ◽  
Molecular Beam ◽  
Conductivity Measurements ◽  
Transport Models ◽  
3Ω Method ◽  
Superlattice Structure ◽  
Anisotropic Thermal Conductivity ◽  
Ge Quantum Dot

Abstract In this work, we present experimental results on the in-plane and cross-plane thermal conductivity characterization of a Si/Ge quantum-dots superlattice structure. The quantum-dots superlattice was grown by molecular-beam-epitaxy and self-organization. The anisotropic thermal conductivity measurements are performed by a differential two-wire 3ω method. The measured in-plane and cross-plane thermal conductivity values show a different temperature behavior. The results are compared and explained with heat transport models in superlattices.

Anisotropic Thermal Conductivity of A Si/Ge Superlattice

1998 ◽  
Vol 545 ◽  
Author(s):  
T. Borca-Tasciuc ◽  
D. Song ◽  
J. L. Liu ◽  
G. Chen ◽  
K. L. Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Thermal Conductivity ◽  
Temperature Drop ◽  
Differential Method ◽  
Conductivity Measurements ◽  
3Ω Method ◽  
Anisotropic Thermal Conductivity ◽  
Plane Direction ◽  
Narrow Width ◽  
Heat Spreading

AbstractExperimental evidence for a significant thermal conductivity reduction have been reported in recent years for GaAs/AlAs, Si/Ge, and Bi 2Te3/Sb2Te3 superlattices. In this work, we present preliminary experimental results on the reduction of the in-plane and cross-plane thermal conductivity for a symmetric Si/Ge superlattice. A differential 2-wire 3ω method is developed to perform the anisotropic thermal conductivity measurements. In this technique, a patterned heater with a width much larger than the film thickness yields the cross-plane thermal conductivity of the film. The in-plane thin film thermal conductivity is inferred from the temperature rise of a narrow width heater that can create more heat spreading in the in-plane direction of the thin film. A differential method to measure the temperature drop across the film is employed in order to increase the accuracy of the measurement.

scholarly journals Anisotropic thermal conductivity measurement of organic thin film with bidirectional 3ω method

2021 ◽  
Vol 92 (3) ◽  
pp. 034902
Author(s):  
Shingi Yamaguchi ◽  
Takuma Shiga ◽  
Shun Ishioka ◽  
Tsuguyuki Saito ◽  
Takashi Kodama ◽  
...  
Keyword(s):  
Thin Film ◽  
Thermal Conductivity ◽  
Conductivity Measurement ◽  
Thermal Conductivity Measurement ◽  
Organic Thin Film ◽  
3Ω Method ◽  
Anisotropic Thermal Conductivity

scholarly journals Study of anisotropic thermal conductivity in textured thermoelectric alloys by Raman spectroscopy

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 24456-24465
Author(s):  
Rapaka S. C. Bose ◽  
K. Ramesh
Keyword(s):  
Crystal Structure ◽  
Thermal Conductivity ◽  
Raman Spectroscopy ◽  
Transport Properties ◽  
Thermal Transport ◽  
Layered Crystal ◽  
Layered Crystal Structure ◽  
Thermal Transport Properties ◽  
Anisotropic Thermal Conductivity ◽  
P Type

Polycrystalline p-type Sb1.5Bi0.5Te3 (SBT) and n-type Bi2Te2.7Se0.3 (BTS) compounds possessing layered crystal structure show anisotropic electronic and thermal transport properties.

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