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The Saffman-Taylor viscous fingering instability occurs when a less viscous fluid displaces a more viscous one between narrowly spaced parallel plates in a Hele-Shaw cell. Experiments in radial flowâ€¦ (More)

Boron Carbide exhibits a broad composition range, implying a degree of intrinsic substitutional disorder. While the observed phase has rhombohedral symmetry (space group R3Ì„m), the enthalpyâ€¦ (More)

- Nishtha Srivastava, Qin Gao, +6 authors Ivan Vlassiouk
- 2016

The reflectivity of low energy electrons from graphene on copper substrates is studied both experimentally and theoretically. Well-known oscillations in the reflectivity of electrons with energies 0â€¦ (More)

- Randall M. Feenstra, Nishtha Srivastava, +6 authors Nalin K Srivastava
- 2016

Low-energy reflectivity of electrons from singleand multi-layer graphene is examined both theoretically and experimentally. A series of minima in the reflectivity over the energy range of 0 â€“ 8 eVâ€¦ (More)

- Zheng Yang, Ivet Bahar, Michael Widom
- Biophysical journal
- 2009

Coarse-grained elastic network models elucidate the fluctuation dynamics of proteins around their native conformations. Low-frequency collective motions derived by simplified normal mode analysis areâ€¦ (More)

A simple method is proposed for inclusion of inelastic effects (electron absorption) in computations of low-energy electron reflectivity (LEER) spectra. The theoretical spectra are formulated byâ€¦ (More)

The high entropy alloy containing refractory metals Mo-Nb-Ta-W has a body centered cubic structure, which is not surprising given the complete mutual solubility in BCC solid solutions of all pairs ofâ€¦ (More)

- Maxwell Hutchinson, Michael Widom
- Computer Physics Communications
- 2012

General purpose graphical processing units (GPU's) offer high processing speeds for certain classes of highly parallelizable computations, such as matrix operations and Fourier transforms, that lieâ€¦ (More)

- Michael Widom
- 2014

This chapter introduces calculational methods that can be used for abinitio structure prediction in multicomponent alloy systems, with an emphasis on concepts relevant to high entropy alloys.â€¦ (More)

Pittsburgh, PA UNITED STATES Corresponding Author Secondary Information: Corresponding Author's Institution: Corresponding Author's Secondary Institution: First Author: William P. Huhn First Authorâ€¦ (More)