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Neutron research

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Displaying 401 - 425 of 1579

Spatially graded porous transport layers for gas evolving electrochemical energy conversion: High performance polymer electrolyte membrane electrolyzers

December 15, 2020
Author(s)
Jason K. Lee, ChungHyuk Lee, Kieran F. Fahy, Pascal J. Kim, Jacob LaManna, Eli Baltic, Daniel S. Hussey, David L. Jacobson, A Gago, S Kolb, K Friedrich, Aimy Bazylak
Decarbonizing society's energy infrastructure is foundational for a sustainable future and can be realized by harnessing renewable energy for clean hydrogen and on-demand power with fuel cells. Here, we elucidate how graded porous transport layers (PTLs)

VDAC Gating Thermodynamics, but Not Gating Kinetics, Are Virtually Temperature Independent

December 15, 2020
Author(s)
Maria Queralt-Martin, David Hoogerheide, Sergei Y. Noskov, Alexander M. Berezhkovskii, Tatiana Rostovtseva, Sergey Bezrukov
The voltage-dependent anion channel, VDAC, is the most abundant protein in the mitochondrial outer membrane and an archetypical β-barrel channel. Here, we study the effects of temperature on VDAC channels reconstituted in planar lipid membranes at the

Competing Antiferromagnetic-Ferromagnetic States in d 7 Kitaev Honeycomb Magnet

December 14, 2020
Author(s)
Hector Vivanco, Benjamin Trump, Craig Brown, Tyrel M. McQueen
The Kitaev model is a rare example of an analytically solvable and physically instantiable Hamiltonian yielding a topological quantum spin liquid ground state. Here we report signatures of Kitaev spin liquid physics in the honeycomb magnet Li 3Co 2SbO 6

Boosting Membrane Hydration for High Current Densities in Membrane Electrode Assembly CO2 Electrolysis

November 25, 2020
Author(s)
Hisan W. Shafaque, ChungHyuk Lee, Kieran F. Fahy, Jason K. Lee, Jacob LaManna, Eli Baltic, Daniel S. Hussey, David L. Jacobson, Aimy Bazylak
Despite the advantages of CO2 electrolyzers, efficiency losses due to mass and ionic transport across the membrane electrode assembly (MEA) are critical bottlenecks for commercial-scale implementation. In this study, more efficient electrolysis of CO2 was

Peritectic Phase Transition of Benzene and Acetonitrile into a Cocrystal Relevant to Titan, Saturn's Moon

November 14, 2020
Author(s)
Christina A. McConville, Yunwen Tao, Hayden Evans, Benjamin Trump, Jonathan B. Lefton, Wenqian Xu, Andrey A. Yakovenko, Elfi Kraka, Craig Brown, Tomce Runcevski
Benzene and acetonitrile are two of the most commonly used solvents found in almost every chemical laboratory. Titan, Saturn's icy moon, is one other place in the Solar system that has even larger amounts of these compounds, together with many other

SurA is a Cryptically Grooved Chaperone that Expands Unfolded Outer Membrane Proteins

October 21, 2020
Author(s)
Dagan C. Marx, Ashlee M. Plummer, Anneliese M. Faustino, Taylor Devlin, Michaela A. Roskopf, Mathis J. Leblanc, Henry J. Lessen, Barbara T. Amann, Patrick J. Fleming, Susan T. Krueger, Stephen D. Fried, Karen G. Fleming
The periplasmic chaperone network ensures the biogenesis of bacterial outer membrane proteins (OMPs) and has recently been identified as a promising target for antibiotics. SurA is the most important member of this network, both due to its genetic

Effect of H 2 O Molecules on Thermal Expansion of TiCo(CN) 6

October 19, 2020
Author(s)
Qilong Gao, Xinwei Shi, Alessandro Venier, Qingzhen Huang, Hui Wu, Jun Chen, Andrea Sanson, Erjun Liang
The understanding of the role of guest molecules in the lattice void of open-framework structures is vital for thermal expansion tailoring. Here, we take a new NTE compound, TiCo(CN) 6 as a case study from the local structure perspective to investigate the
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