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Laboratory Constraints on Chameleon Dark Energy and Power-Law Fields
We report results from a search for chameleon particles created via photon-chameleon oscillations within a magnetic field. This experiment is sensitive to a wide class of unexplored chameleon power-law and dark energy models. These results exclude 5 orders of magnitude in the coupling of chameleons to photons covering a range of 4 orders of magnitude in chameleon effective mass and, for individual models, exclude between 4 and 12 orders of magnitude in chameleon couplings to matter.
Weibel-Instability-Mediated Collisionless Shocks in the Laboratory with Ultraintense Lasers
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Quantitative Study of Guide-Field Effects on Hall Reconnection in a Laboratory Plasma
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Toward Astrophysical Turbulence in the Laboratory
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Nonlinear Excitation of Acoustic Modes by Large-Amplitude Alfvén Waves in a Laboratory Plasma
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Laboratory Study of Magnetic Reconnection with a Density Asymmetry across the Current Sheet
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Compound Semiconductor Photonic Integrated Circuits at Sandia National Laboratories.
Abstract not provided.
Radio frequency silicon photonics at Sandia National Laboratories.
Abstract not provided.
Isentropic compression studies at the Los Alamos national high magnetic field laboratory
Abstract Not Provided
Small Commercial Inverter Laboratory Evaluations of UL 1741 SA Grid-Support Function Response Times.
Abstract not provided.
Nuclear Facility Safety Enhancement Using Sandia National Laboratories' Computer Codes.
Abstract not provided.
Design and characterization of a novel 1 ns multi-frame imager for the Ultra-Fast X-ray Imager (UXI) program at Sandia National Laboratories.
Abstract not provided.
Critical Review of Platinum Group Metal-Free Materials for Water Electrolysis: Transition from the Laboratory to the Market : Earth-abundant borides and phosphides as catalysts for sustainable hydrogen production
To combat the global problem of carbon dioxide emissions, hydrogen is the desired energy vector for the transition to environmentally benign fuel cell power. Water electrolysis (WE) is the major technology for sustainable hydrogen production. Despite the use of renewable solar and wind power as sources of electricity, one of the main barriers for the widespread implementation of WE is the scarcity and high cost of platinum group metals (pgms) that are used to catalyse the cathodic hydrogen evolution reaction (HER) and the anodic oxygen evolution reaction (OER). Hence, the critical pgm-based catalysts must be replaced with more sustainable alternatives for WE technologies to become commercially viable. This critical review describes the state-of-the-art pgm-free materials used in the WE application, with a major focus on phosphides and borides. Several emerging classes of HER and OER catalysts are reviewed and detailed structure-property correlations are comprehensively summarised. The influence of the crystallographic and electronic structures, morphology and bulk and surface chemistry of the catalysts on the activity towards OER and HER is discussed.