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Author

Shuxiang Zhou

Other affiliations: Idaho National Laboratory
Bio: Shuxiang Zhou is an academic researcher from University of Wisconsin-Madison. The author has contributed to research in topics: Thermal conductivity & Physics. The author has an hindex of 3, co-authored 6 publications receiving 25 citations. Previous affiliations of Shuxiang Zhou include Idaho National Laboratory.

Papers
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TL;DR: In this paper, the authors developed a practical and general modeling approach for thermal conductivity of metals and metal alloys that integrates ab initio and semi-empirical physics-based models to maximize the strengths of both techniques.
Abstract: In this work we developed a practical and general modeling approach for thermal conductivity of metals and metal alloys that integrates ab initio and semiempirical physics-based models to maximize the strengths of both techniques. The approach supports creation of highly accurate, mechanistic, and extensible thermal conductivity modeling of alloys. The model was demonstrated on \ensuremath{\alpha}-U and U-rich U-Zr and U-Mo alloys, which are potential fuels for advanced nuclear reactors. The safe use of U-based fuels requires quantitative understanding of thermal transport characteristics of the fuel. The model incorporated both phonon and electron contributions, displayed good agreement with experimental data over a wide temperature range, and provided insight into the different physical factors that govern the thermal conductivity under different temperatures. This model is general enough to incorporate more complex effects like additional alloying species, defects, transmutation products, and noble gas bubbles to predict the behavior of complex metallic alloys like U-alloy fuel systems under burnup.

13 citations

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TL;DR: In this article, the authors developed a practical and general modeling approach for thermal conductivity of metals and metal alloys that integrates ab initio and semi-empirical physics-based models to maximize the strengths of both techniques.
Abstract: In this work we developed a practical and general modeling approach for thermal conductivity of metals and metal alloys that integrates ab initio and semiempirical physics-based models to maximize the strengths of both techniques. The approach supports creation of highly accurate, mechanistic, and extensible thermal conductivity modeling of alloys. The model was demonstrated on {\alpha}-U and U-rich U-Zr and U-Mo alloys, which are potential fuels for advanced nuclear reactors. The safe use of U-based fuels requires quantitative understanding of thermal transport characteristics of the fuel. The model incorporated both phonon and electron contributions, displayed good agreement with experimental data over a wide temperature range, and provided insight into the different physical factors that govern the thermal conductivity under different temperatures. This model is general enough to incorporate more complex effects like additional alloying species, defects, transmutation products, and noble gas bubbles to predict the behavior of complex metallic alloys like U-alloy fuel systems under burnup.

12 citations

Journal ArticleDOI
TL;DR: The observed O-O stretching vibration in Raman spectra provides direct evidence for inter-oxygen bonding in the structure of pyrite-type PtO2, and the O-H vibrations in py-PtO2 synthesized from the low-temperature areas are identified, indicating hydrogenation.
Abstract: We have synthesized pyrite-type PtO2 (py-PtO2) at 50–60 GPa and successfully recovered it at 1 bar. The observed O–O stretching vibration in Raman spectra provides direct evidence for inter-oxygen ...

5 citations

Journal ArticleDOI
TL;DR: In this paper, a computational model of thermal conductivity based on density functional theory (DFT) calculations, physics rules, and experimental data, for concentrated binary metal alloys was developed.

4 citations

Journal ArticleDOI
TL;DR: In this article, a three-stage thermal conductivity model for complex metal alloys is developed, based on density functional theory (DFT) calculations, physics rules, and experimental data.

3 citations


Cited by
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01 Jan 2002
TL;DR: It is suggested that by 2020, the number of students attending classes at the University of Southern California will have risen to about 20,000, up from about 10,000 in 1980.
Abstract: ?? ????? ??????? ??? ????????????? ?????? ??????? ???? ??????? ????????????? ??? ???????? ?? 1978 ??? ?? ????? ?????? ???? ??? ?? 1980. ??????, ??????????? ??? 2020, ??????? 17 ???? ??? ??? ??????? 25 ?????????. ?? 1995 ?? ????? ??????????? ??? ????????? ?????? ???? ??????? ??? ??????, ???? ????????????????? ??? ???????? ??? ?????? ??? ????????? ?????? 8 ??? ??????????? ??? ??? ???? ??? ?????????. ?? ???????? ??? ????? ?????? ??? ????? ????????? ?? ????? ??????? ???? ?? ?? ????? ????????? ??????????? [1] ??? ?? ?????? ??????????? ???? ???????? [2], ???????? ??? Univ. of Southern California (???).

311 citations

06 May 2011

251 citations

Journal ArticleDOI
TL;DR: In this article, the thermophysical properties of the U3Si2 compound were investigated using a semi-empirical modified Embedded-Atom Method (MEAM) potential and density functional theory.

18 citations

Journal ArticleDOI
TL;DR: In this article, the authors show that the Fermi surface of a metal exhibits multiple Kohn anomalies enabled by the combined effect of FSN and hidden nesting, i.e., nesting of electronic states above and below the Fermani surface.
Abstract: The topology of the Fermi surface controls the electronic response of a metal, including charge density wave (CDW) formation. A topology conducive for Fermi surface nesting (FSN) allows the electronic susceptibility ${\ensuremath{\chi}}_{0}$ to diverge and induce a CDW at wave vector ${\mathbf{q}}_{\mathrm{CDW}}$. Kohn extended the implications of FSN to show that the imaginary part of the lattice dynamical susceptibility ${\ensuremath{\chi}}_{L}^{\ensuremath{'}\ensuremath{'}}$ also responds anomalously for all phonon branches at ${\mathbf{q}}_{\mathrm{CDW}}$---a phenomenon referred to as the Kohn anomaly. However, materials exhibiting multiple Kohn anomalies remain rare. Using first-principles simulations of ${\ensuremath{\chi}}_{0}$ and ${\ensuremath{\chi}}_{L}^{\ensuremath{'}\ensuremath{'}}$, and previous scattering measurements [Crummett et al., Phys. Rev. B 19, 6028 234 (1979)], we show that $\ensuremath{\alpha}$-uranium harbors multiple Kohn anomalies enabled by the combined effect of FSN and ``hidden'' nesting, i.e., nesting of electronic states above and below the Fermi surface. FSN and hidden nesting lead to a ridgelike feature in the real part of ${\ensuremath{\chi}}_{0}$, allowing interatomic forces to modulate strongly and multiple Kohn anomalies to emerge. These results emphasize the importance of hidden nesting in controlling ${\ensuremath{\chi}}_{0}$ and ${\ensuremath{\chi}}_{L}^{\ensuremath{'}\ensuremath{'}}$ to exploit electronic and lattice states and enable engineering of advanced materials, including topological Weyl semimetals and superconductors.

7 citations