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Displaying 451 - 475 of 1582

Creating Asymmetric Phospholipid Vesicles via Exchange with Lipid-Coated Silica Nanoparticles

August 4, 2020

Author(s)

Yangmingyue Liu, Elizabeth Kelley, Krishna C. Batchu, Lionel Porcar, Ursula Perez-Salas

Lipids, together with embedded proteins, are essential components of cellular membranes. In vivo, these membranes not only have unique lipid and protein compositions, but also have a strict asymmetric distribution of lipids between the two leaflets of the

Neutron Diffraction Study of Macrostress and Microstress in Al-Al 2 O 3 -Based Corrosion Protection Coating Obtained by Cold Spray (Dynamic Metallization)

August 1, 2020

Author(s)

V. Luzin, P. Spiridonov, K. Spencer, Thomas H. Gnaupel-Herold

Protective coatings based on an Al/Al2O3 metal matrix composite (MMC) were sprayed using Dynamic Metallisation (DM), a low-pressure cold spray variant. A series of samples approximately 1mm in thickness were sprayed with changing parameters of the spraying

The Antioxidant Vitamin E as a Membrane Raft Modulator: Tocopherols do not Abolish Lipid Domains

August 1, 2020

Author(s)

Mitchell DiPasquale, Michael H. Nguyen, Brett W. Rickeard, Nicole Cesca, Christopher Tannous, Stuart R. Castillo, John Katsaras, Elizabeth Kelley, Frederick A. Heberle, Drew Marquardt

A great deal of individuals across North America regularly supplement their diet with the antioxidant, vitamin E. This billion-dollar supplementation industry encourages the use of vitamin E with little evidence supporting its actual health benefits

Ultra-small angle neutron scattering to study droplet formation in polyelectrolyte complex coacervates

July 25, 2020

Author(s)

Vivek Prabhu, Yimin Mao, Markus Bleuel, Samim Ali, Yuanchi Ma

Associating soft matter such as surfactants, polymers, proteins, and liposomes, may form structures with dimensions not readily accessible by optical methods. Scattering methods can provide detailed information about the mechanism of associative phase

Importance of Sub-Nanosecond Fluctuations on the Toughness of Polycarbonate Glasses

July 23, 2020

Author(s)

Christopher L. Soles, Kanae N. Ito, Adam B. Burns, Edwin P. Chan, Robert M. Dimeo, Madhu Sudan Tyagi, Albert F. Yee, Jianwei Liu

This article explores the relationship between the nano- to picosecond dynamics, as quantified by elastic incoherent neutron scattering, in polycarbonate (PC) glasses with their mechanical toughness. We establish a robust correlation between mechanical

Using Operando Techniques to Understand and Design Alkaline Membrane Fuel Cells with Excellent Performance and Long Operational Stability

July 16, 2020

Author(s)

Xiong Peng, Devashish Kulkarni, Ying Huang, Travis J. Omasta, Benjamin Ng, Yiwei Zheng, Lianqin Wang, Jacob LaManna, Daniel S. Hussey, John R. Varcoe, Iryna V. Zenyuk, William E. Mustain

Operando neutron imaging and operando micro X-ray computed tomography were used to understand the water dynamics of AEMFCs under various operating conditions, and this new fundamental information was used to create electrodes that not only enabled high

Self-Adjusting Binding Pockets Enhance H 2 and CH 4 Adsorption in a Uranium-Based-Metal-Organic Framework

July 14, 2020

Author(s)

Dominik P. Halter, Ryan Klein, Michael A. Boreen, Benjamin Trump, Craig Brown, Jeffrey R. Long

A new, air-stable, permanently porous uranium(IV) metal–organic framework U(bdc) 2 (1, bdc 2− = 1,4-benzenedicarboxylate) was synthesized and its H 2 and CH 4 adsorption properties were investigated. Low temperature adsorption isotherms confirm strong

Sensitive neutron transverse polarization analysis using a 3He spin filter

July 7, 2020

Author(s)

Y.- Y. Jau, Wangchun Chen, Thomas R. Gentile, Daniel S. Hussey

We report an experimental implementation for neutron transverse polarization analysis that is able to detect a small angular change (10^-3 rad) of neutron spin orientation and works for both monochromatic and polychromatic neutron beams. Our approach

Entangled Polymer Dynamics in Attractive Nanocomposite Melts

June 23, 2020

Author(s)

Erkan Senses, Saeid Darvishi, Madhu Sudan Tyagi, Antonio Faraone

We investigate single chain dynamics of an entangled linear poly (ethylene oxide) melt in presence of well-dispersed attractive nanoparticles using high resolution neutron spectroscopy at particle volume fractions as high as 0.53. The short time dynamics

PPDiffuse: A Quantitative Prediction Tool for Diffusion of Charged Polymers in a Nanopore

June 19, 2020

Author(s)

David P. Hoogerheide

Deep learning for high-resolution and high-sensitivity interferometric phase contrast imaging

June 18, 2020

Author(s)

Daniel S. Hussey, Seung W. Lee

The symmetric geometry of a grating interferometer is advantageous because it gives a maximum phase-sensitivity when the sample is at the phase grating position. However, the spatial resolution is reduced due to the geometric blur due to the increased

Information Gain from Isotopic Contrast Variation in Neutron Reflectometry on Protein-Membrane Complex Structures

June 1, 2020

Author(s)

Frank Heinrich, Paul Kienzle, David P. Hoogerheide, Mathias Loesche

We apply a framework to quantify information gain from neutron or x-ray reflectometry experiments (Treece et al., 2019), in an in-depth investigation into the design of scattering contrast in biological and soft matter surface architectures. To focus the

Neutron Scattering for Structural Biology

June 1, 2020

Author(s)

David P. Hoogerheide, V. Trevor Forsyth, Katherine A. Brown