scholarly journals Unusual Thermal Boundary Resistance in Halide Perovskites: A Way To Tune Ultralow Thermal Conductivity for Thermoelectrics

2019 ◽  
Vol 11 (50) ◽  
pp. 47507-47515 ◽  
Author(s):  
Tianjun Liu ◽  
Sheng-Ying Yue ◽  
Sinclair Ratnasingham ◽  
Thibault Degousée ◽  
Pritesh Varsini ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boundary Resistance ◽  
Thermal Boundary Resistance ◽  
Halide Perovskites

scholarly journals Modification of thermal conductivity and thermal boundary resistance of amorphous Si thin films by Al doping

RSC Advances ◽  
2017 ◽  
Vol 7 (13) ◽  
pp. 7901-7905 ◽  
Author(s):  
Tianzhuo Zhan ◽  
Masahiro Goto ◽  
Yibin Xu ◽  
Yohei Kinoshita ◽  
Mamoru Ishikiriyama ◽  
...  
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Boundary Resistance ◽  
Thermal Boundary Resistance ◽  
Al Doping ◽  
Amorphous Si

We investigate the effects of Al doping on the thermal conductivity and thermal boundary resistance of a-Si thin films.

Experimental Study on the Thermal Boundary Resistance Between an Individual Carbon Nanotube End and a Au Surface

2011 ◽  
Author(s):  
Jun Hirotani ◽  
Tatsuya Ikuta ◽  
Takashi Nishiyama ◽  
Koji Takahashi
Keyword(s):  
Thermal Conductivity ◽  
Experimental Study ◽  
Carbon Nanotube ◽  
Experimental Studies ◽  
Boundary Resistance ◽  
Thermal Boundary Resistance ◽  
The Past ◽  
Experiment Method ◽  
Very High ◽  
Intrinsic Thermal Conductivity

In the past decade, the very high intrinsic thermal conductivity of a carbon nanotube (CNT) has been successfully unveiled through experimental studies, but the thermal boundary resistance (TBR) between a CNT and ambient material still remains unclear. Some analytical and molecular dynamics studies have been reported on the TBR between a CNT and a surrounding material but there is no reliable experiment method to quantitatively investigate TBR between a CNT and a solid surface because of technical difficulties.

Thermal conductivity and thermal boundary resistance of amorphous Al2O3 thin films on germanium and sapphire

2020 ◽  
Vol 127 (24) ◽  
pp. 245105
Author(s):  
Jessy Paterson ◽  
Dhruv Singhal ◽  
Dimitri Tainoff ◽  
Jacques Richard ◽  
Olivier Bourgeois
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Boundary Resistance ◽  
Thermal Boundary Resistance ◽  
Amorphous Al2o3

Measurement of thermal boundary resistance and thermal conductivity of single-crystalline Bi2Te3 nanoplate films by differential 3ω method

2020 ◽  
Vol 13 (3) ◽  
pp. 035501
Author(s):  
Ryotaro Mori ◽  
Oga Norimasa ◽  
Takuya Kurokawa ◽  
Saburo Tanaka ◽  
Koji Miyazaki ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Boundary Resistance ◽  
Thermal Boundary Resistance ◽  
3Ω Method ◽  
Single Crystalline

Role of Interface Thermal Boundary Resistance, Straining, and Morphology in Thermal Conductivity of a Set of Si-Ge Superlattices and Biomimetic Si-Ge Nanocomposites

2011 ◽  
Author(s):  
Vikas Samvedi ◽  
Vikas Tomar
Keyword(s):  
Thermal Conductivity ◽  
Thermal Behavior ◽  
Boundary Resistance ◽  
Thermal Boundary Resistance ◽  
Structural Factors ◽  
Transfer Resistance ◽  
Different Temperatures ◽  
Non Equilibrium Molecular Dynamics ◽  
Striking Contrast

Nanoscale engineered materials with tailored thermal properties are desirable for applications such as highly efficient thermoelectric, microelectronic and optoelectronic devices. It has been shown earlier that by judiciously varying interface thermal boundary resistance (TBR) thermal conductivity in nanostructures could be controlled. Two types of nanostructures that have gained significant attention owing to the presence of TBR are superlattices and nanocomposites. A systematic comparison of thermal behavior of superlattices and nanocomposites considering their characteristic structural factors such as periodicity and period length for superlattices, and morphology for nanocomposites, under different extents of straining at a range of temperatures remains to be performed. In this presented work, such analyses are performed for a set of Si-Ge superlattices and Si-Ge biomimetic nanocomposites using non-equilibrium molecular dynamics (NEMD) simulations at three different temperatures (400 K, 600 K, and 800 K) and at strain levels varying between −10% and 10%. The analysis of interface TBR contradicts the usual notion that each interface contributes equally to the heat transfer resistance in a layered structure. The dependence of thermal conductivity of superlattice on the direction of heat flow gives it a characteristic somewhat similar to a thermal diode as found in this study. The comparison of thermal behavior of superlattices and nanocomposites indicate that the nanoscale morphology differences between the superlattices and the nanocomposites lead to a striking contrast in the phonon spectral density, interfacial thermal boundary resistance, and thermal conductivity. Both compressive and tensile strains are observed to be important factors in tailoring the thermal conductivity of the analyzed superlattices, whereas have very insignificant influence on the thermal conductivity of the analyzed nanocomposites.

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