The engineering of hollow nanostructures is a promising approach to addressing instabilities in silicon-based electrodes for lithium-ion batteries. Previous studies showed that a SiOx coating on silicon nanotubes (SiNTs) could function as a constraining layer and enhance capacity retention in electrodes with low mass loading, but we show here that similarly produced electrodes having negligible...

A reformulation of the Hoop Conjecture which avoids the use of any foliations as well as ill-defined notions of “encircled mass” and “circumference of a body” is presented. The new formulation is based on the concept of trapped circle, which is well-defined, geometrically sound, and physically relevant. With the new formulation, the problems of severe compactness in every spatial direction, and...

We report direct observation of an unexpected anisotropic swelling of Si nanowires during lithiation against either a solid electrolyte with a lithium counter-electrode or a liquid electrolyte with a LiCoO(2) counter-electrode. Such anisotropic expansion is attributed to the interfacial processes of accommodating large volumetric strains at the lithiation reaction front that depend sensitively ...

Residual stresses and strains in as-cast and annealed aluminum engine blocks were mapped in the main web area above the bearing split using diffraction. Automated coordinate-mapping of the surface and bulk strains was accomplished with X-ray and neutron diffraction, respectively. LabVIEW-based software was developed for improved efficiency, flexibility and quality of data analysis. In the hoop ...

A Chandra study of pulsar wind nebula around the young energetic pulsar PSR B1509−58 is presented. The high resolution X-ray image with total exposure time of 190 ks reveals a ring like feature 10” apart from the pulsar. This feature is analogous to the inner ring seen in the Crab nebula and thus may correspond to a wind termination shock. The shock radius enables us to constrain the wind magne...

I worked with the non-profit organization Eco Vrindavan Inc., located in Moundsville West Virginia to grow and provide organic food local community. Wheeling’s Grow Ohio Valley, an that supports production, assisted installing “hoop houses” which increase length of growing season production. Hoop houses are unheated structures covered plastic where crops planted directly into ground. While work...