scholarly journals Dynamically Rough Boundary Scattering Effect on a Propagating Continuous Acoustical Wave in a Circular Pipe with Flow

Sensors ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 1098 ◽  
Author(s):  
Anna Romanova ◽  
Kirill Horoshenkov ◽  
Anton Krynkin
Keyword(s):  
Circular Pipe ◽  
Rough Boundary ◽  
Boundary Scattering ◽  
Scattering Effect

Fundamental insight into control of thermal conductivity in silicon-germanium alloy nanowires

2014 ◽  
Vol 1707 ◽  
Author(s):  
Yongjin Lee ◽  
Gyeong S. Hwang
Keyword(s):  
Thermal Conductivity ◽  
Silicon Germanium ◽  
Nonequilibrium Molecular Dynamics ◽  
Boundary Scattering ◽  
Alloy Scattering ◽  
Scattering Effect ◽  
Germanium Alloy ◽  
Alloy Nanowires ◽  
Fundamental Insight ◽  
Insight Into

ABSTRACTWe present a computational analysis of thermal transport in Silicon-Germanium alloy nanowires (SiGeNWs), particularly focusing on the relative roles of alloy scattering and boundary scattering to the significant reduction of thermal conductivity (κ). Our nonequilibrium molecular dynamics (NEMD) simulations confirm the strong dependence of κ on Si:Ge ratio, as observed in previous experimental studies. Interestingly, as the amount of impurity increases, the difference in κ between SiGe bulk and SiGeNW becomes smaller. Especially, κSiGeNW and κSiGe have similar κ values when the Ge content is 20-80 %. From a nonequilibrium Green’s function (NEGF)-density functional theory (DFT) analysis, it is suggested that the most reduction in transmission channels is attributed to the strong alloy scattering effect for both Si0.8Ge0.2 bulk and Si0.8Ge0.2 NW. The boundary scattering effect in the SiGe alloy system seems to be unimportant as alloy scattering is dominant. The improved understanding provides fundamental insight into how to modify Si-based materials to enhance their thermoelectric (TE) properties through nanostructuring and alloying.

Numerical Analysis of the Boundary Scattering Effect on Transport Properties in Bi-Sb Nanowires

2013 ◽  
Vol 42 (7) ◽  
pp. 2172-2177 ◽  
Author(s):  
Yuta Nabatame ◽  
Tsuyoshi Matsumoto ◽  
Yuki Ichige ◽  
Takashi Komine ◽  
Ryuji Sugita ◽  
...  
Keyword(s):  
Numerical Analysis ◽  
Transport Properties ◽  
Boundary Scattering ◽  
Scattering Effect

Phonon boundary scattering effect on thermal conductivity of thin films

2011 ◽  
Vol 110 (4) ◽  
pp. 046102 ◽  
Author(s):  
G. H. Tang ◽  
Y. Zhao ◽  
G. X. Zhai ◽  
C. Bi
Keyword(s):  
Thin Films ◽  
Thermal Conductivity ◽  
Boundary Scattering ◽  
Scattering Effect ◽  
Conductivity Of Thin Films

Surface plasmon damping due to rough boundary scattering

1981 ◽  
Vol 40 (7) ◽  
pp. 729-731 ◽  
Author(s):  
A.A. Gabashvili ◽  
V.A. Yampolski
Keyword(s):  
Surface Plasmon ◽  
Rough Boundary ◽  
Boundary Scattering
Sign in / Sign up

Export Citation Format

Share Document