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Neutron research

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Displaying 826 - 850 of 1584

Simultaneous Neutron and X-Ray Imaging of 3D Structure of Organic Matter and Fracture in Shales

April 1, 2018
Author(s)
Wei-Shan NMN Chiang, Jacob M LaManna, Daniel S. Hussey, David L. Jacobson, Yun Liu, Jilin Zhang, Daniel T. Georgi, Jordan R. Kone, Jin-hong Chen
Hydrocarbon production from shales using horizontal drilling and hydraulic fracturing has been the key development in the US energy industry in the past decade and has now become more important globally. Nevertheless, many fundamental problems related to

Stress Profiling in Cold-Spray Coatings by Different Experimental Techniques: Neutron Diffraction, X-ray Diffraction and Slitting Method

April 1, 2018
Author(s)
Vladimir Luzin, Kevin Spencer, Michael R. Hill, Tao Wei, Michael Law, Thomas H. Gnaupel-Herold
The residual stress profiles in Cu and Al coatings sprayed using kinetic metallization to thickness of 2 mm have been studied. Due to specific parameters of the cold spray process and particular combination of materials of coatings and substrates the

Selective Hydride Occupation in BaVO 3-x H x (0.3 less than or equal to}xless than or equal to}0.8) with Face- and Corner-Shared Octahedra

March 13, 2018
Author(s)
Takafumi Yamamoto, Kazuki Shitara, Shunsaku Kitagawa, Akihide Kuwabara, Masahiro Kuroe, Kenji Ishida, Masayuki Ochi, Kazuhiko Kuroki, Kotaro Fujii, Masatomo Yashima, Craig Brown, Hiroshi Takatsu, Tassel Cedric, Hiroshi Kageyama
A growing number of transition metal oxyhydrides have recently been reported, but they are all confined to perovskite-based structures with corner-shared octahedra. Using high pressure synthesis, we have obtained vanadium oxhydrides BaVO 3-xH x(0.3less

Unravelling Solid-State Redox Chemistry in Li 1.3 Nb 0.3 Mn 0.4 O 2 Single-Crystal Cathode Material

March 13, 2018
Author(s)
Wang Hay Kan, Dongchang Chen, Joseph K. Papp, Alpesh Khushalchand Shukla, Ashfia Huq, Craig Brown, Bryan D. McCloskey, Guoying Chen
Recent reports on high capacities delivered by Li-excess transition-metal oxide cathodes have triggered intense interest in utilizing reversible oxygen redox for high-energy battery applications. In order to control oxygen electrochemical activities

Intrinsic Orbital Angular Momentum States of Neutrons

March 2, 2018
Author(s)
Ronald L. Cappelletti, Terrence J Jach, John T. Vinson
A recent neutron interferometry experiment attempted to observe the orbital angular momentum (OAM) of neutron de Broglie waves of neutron de Broglie waves using a spiral phase (SPP) (Nature 525, 504 (2015) [1]). Based upon conventional neutron optical

Characterization of the NISTmAb Reference Material using Small-Angle Scattering and Molecular Simulation Part I: Dilute Protein Structures

March 1, 2018
Author(s)
Maria Monica Castellanos Mantilla, Steven C Howell, David T. Gallagher, Joseph E. Curtis
Both conformational and colloidal stability of therapeutic proteins must be closely monitored and thoroughly characterized to assess the long-term viability of drug products. In these series of papers on small-angle scattering, we characterize the IgG1

Simultaneous Slit Rheometry and In Situ Neutron Scattering

March 1, 2018
Author(s)
Javen Scott Weston, Daniel P. Seeman, Daniel L. Blair, Paul Salipante, Steven Hudson, Kathleen Weigandt
In situ measurement of fluid structure during flow, e.g., by neutron scattering, is key to understanding the relationship between structure and rheology. For some applications, structures at high shear rates heretofore unreachable are of particular

Rapid Microwave Preparation and Composition Tuning of the High-Performance Magnetocalorics (Mn,Fe) 2 (P,Si)

February 28, 2018
Author(s)
Jason H. Grebenkemper, Joshua D. Bocarsly, Emily E. Levin, Gareth Seward, Colin A. Heikes, Craig Brown, Sumohan Misra, Fabian Seeler, Kerstin Schierle-Arndt, Stephen D. Wilson, Ram Seshadri
A rapid preparation utilizing assisted microwave heating has been developed for (Mn,Fe) 2(P,Si) and used to prepare samples of (Mn,Fe) 2-δPd0.5^Si 0.5 with δ=0, 0.06, and 0.12. To fully understand the effects of processing and composition changes on

Real-Time Nanopore-Based Recognition of Protein Translocation Success

February 27, 2018
Author(s)
David Paul Hoogerheide, Philip A. Gurnev, Tatiana K. Rostovtseva, Sergey M. Bezrukov
A growing number of new technologies are supported by a single- or multi-nanopore architecture for capture, sensing, and delivery of polymeric biomolecules. 1-6 Nanopore-based single-molecule DNA sequencing, in which engineered nanopores 7 are augmented

Mixed Conductive Soft Solids by Electrostatically Driven Network Formation of a Conjugated Polyelectrolyte

February 15, 2018
Author(s)
Scott P. O. Danielsen, Gabriel E. Sanoja, Samantha R. McCuskey, Boualem Hammouda, Guillermo C. Bazan, Glenn H. Fredrickson, Rachel A. Segalman
The microscopic network structure transitions of a conjugated polyelectrolyte (Poly[2,6-(4,4-bis-potassium butanylsulfonate-4H-cyclopenta-[2,1-b;3,4-b']-dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)], CPE-K) hydrogel were explored with a combination of

Neutron Interferometry Detection of Early Crack Formation in Fatigued Additively Manufactured SS316 Dogbones

February 15, 2018
Author(s)
Daniel S. Hussey, Hong Yao, Adam J. Brooks, Ali Haghshenas, Jumao Yuan, Caroline G. Lowery, Jacob M. LaManna, David L. Jacobson, Nikolay Kardjilov, Shengmin Guo, Michael M. Khonsari, Leslie G. Butler
Fatigue in selective laser melted (SLM) and conventional SS316 dogbones was studied with neutron imaging methods for attenuation, scattering, and diffraction. To detect the microcrack evolution in fatigued samples,two methods of grating-based neutron
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