Monika Rathi

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Given an unknown multicomponent alloy, and a set of standard compounds or alloys of known composition, can one improve upon popular standards-based methods for energy dispersive X-ray (EDX) spectrometry to quantify the elemental composition of the unknown specimen? A method is presented here for determining elemental composition of alloys using transmission(More)
The mechanism of electrical charge transport in hydrogenated nanocrystalline silicon (nc-Si:H) and the enhancement in electrical conductivity by hydrogen plasma exposure has been studied. Nanoscale electrical conduction measurements (laterally on the surface) suggested that the dominant charge transport in nc-Si:H occurs through the crystalline grain(More)
Semiconductor lasers whose active region is composed of a 2D array of intersubband quantum boxes (IQBs) hold the promise [1] to be significantly more efficient than many-stage (i.e., 30-40) intersubband lasers, the so-called quantum-cascade lasers (QCLs). That is a direct consequence of the fact that the electron-relaxation times in deep, unipolar QBs are(More)
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