Andrew Chizmeshya

TL;DR: Large-scale atomic-level simulations of the reaction zone suggest that the PL possesses a "glassy but highly defective SiO2 structure that can permit diffusion of key reactants, critical to enhancing carbonation and lowering sequestration process cost.

TL;DR: In this paper, a class of Si-based semiconductors in the Ge1−xSnx system is described, which is completely characterized by Rutherford backscattering, low-energy secondary ion mass spectrometry, high-resolution transmission electron microscopy, x-ray diffraction (rocking curves), as well as infrared and Raman spectroscopies and spectroscopic ellipsometry.

TL;DR: In this article, a new class of Sn-containing group IV semiconductors are described, which exhibit unprecedented thermal stability, superior crystallinity and unique optical and strain properties such as adjustable bandgaps, and controllable strain states.

TL;DR: The aqueous carbonation reaction process was investigated for representative materials via in situ synchrotron X-ray diffraction and meta-serpentine materials that were observed to form ranged from those with longer range ordering, consistent with diffuse stage-2 like interlamellar order, to an amorphous component that preferentially forms at higher temperatures.

TL;DR: In this article, gas-phase magnesium hydroxide carbonation processes were investigated at high CO2 pressures to better understand the reaction mechanisms involved, and it was found that carbonation and dehydroxylation reactivity decrease with increasing CO2 pressure.