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Displaying 626 - 650 of 2343

Single-photon detection in the mid-infrared up to 10 micron wavelength using tungsten silicide superconducting nanowire detectors

September 14, 2021
Author(s)
Varun Verma, Adriana Lita, Yao Zhai, Heli C. Vora, Richard Mirin, Sae Woo Nam, Boris Korzh, Alex Walter, Ryan Briggs, Marco Colangelo, Emma Wollman, Andrew Beyer, Jason Allmaras, D. Zhu, Ekkehart Schmidt, A. G. Kozorezov, Matthew Shaw
We developed superconducting nanowire single-photon detectors (SNSPDs) based on tungsten silicide (WSi) that show saturated internal detection efficiency up to a wavelength of 10 um. These detectors are promising for applications in the mid-infrared

Intramolecular Structure and Dynamics in Computationally Designed Peptide-Based Polymers Displaying Tunable Chain Stiffness

September 7, 2021
Author(s)
Nairiti Sinha, Yi Shi, Christopher J. Kloxin, Jeffery G. Saven, Antonio Faraone, Grethe V. Jensen, Darrin J. Pochan
Polymers constructed via hybrid physical-covalent assembly of computationally designed peptide coiled coils, or bundlemers, display tunable chain stiffness via control of inter-bundlemer connectivity. Neutron spin echo spectroscopy reveals that rigid rod

Developing Ideal Metalorganic Hydrides for Hydrogen Storage: From Theoretical Prediction to Rational Fabrication

September 6, 2021
Author(s)
Zijun Jing, Qinqin Yuan, Yang Yu, Xiangtao Kong, Khai C. Tan, Jintao Wang, Qijun Pei, Xue-Bin Wang, Wei Zhou, Hui Wu, Anan Wu, Teng He, Ping Chen
Materials for hydrogen storage have been extensively explored for a few decades. Thousands of hydrogen storage materials have been synthesized and tested, however, sparse systems could meet the practical requirements. Metalorganic hydrides discovered

Metastable Antiphase Boundary Ordering in CaFe 2 O 4

September 2, 2021
Author(s)
H. Lane, E. Rodriguez, H. C. Walker, Ch. Niedermayer, U. Stuhr, R. I. Bewley, D. J. Voneshen, M. A. Green, Jose Rodriguez Rivera, P. Fouquet, S.-W. Cheong, J. P. Attfield, R. A. Ewings, C. Stock

An open-access future for Journal of Synchrotron Radiation - an Editorial from the Main Editors and IUCr Journals Editor-in-Chief

September 1, 2021
Author(s)
Kristina Kvashnina, Yoshiyuki Amemiya, Dibyendu Bhattacharyya, Ingolf Lindau, Andrew J. Allen
This is an Editorial for the Journal of Synchrotron Radiation (JSR) to inform all readers, authors and supporters about the coming transition of the journal to become fully open access. All papers submitted to JSR after 1 October 2021, will be for open

MAUD Rietveld Refinement Software for Neutron Diffraction Texture Studies of Single and Dual-Phase Materials

August 19, 2021
Author(s)
Alec Saville, Emily Mitchell, Sven Vogel, Adam Abel Creuziger, Jake Benzing, Kester Clarke, Jonah Klemm-Toole, Amy Clarke
This work presents a detailed instructional demonstration using the Rietveld refinement software MAUD for evaluating the crystallographic texture of single- and dual-phase materials, as applied to High-Pressure-Preferred-Orientation (HIPPO) neutron

Influence of solidification structure on austenite to martensite transformation in additively manufactured hot-work tool steels

August 15, 2021
Author(s)
Chia-Ying Chou, Niklas H. Pettersson, Durga A, Fan Zhang, Christos Oikonomou, Annika Borgenstam, Joakim Odqvist, Greta Lindwall
The microstructure of a hot-work tool steel additively manufactured using laser powder-bed fusion (L-PBF), and its response to post heat treatment, is studied in detail by microstructure characterization and computational thermodynamics and kinetics. The

Electrically Driven Exchange Bias via Solid State Magneto-Ionics

August 4, 2021
Author(s)
Peyton Murray, Christopher Jensen, Alberto Quintana, Junwei Zhang, Xixiang Zhang, Alexander Grutter, Brian Kirby, Kai Liu
Electrically induced ionic motion offers a new way to realize voltage-controlled magnetism, opening the door to a new generation of logic, sensor, and data storage technologies. Here, we demonstrate an effective approach to magneto-ionically and

Adaptive Peak Fitting for Isotope Analysis via Atom Probe Mass Spectrometry

July 30, 2021
Author(s)
Frederick Meisenkothen, Daniel Samarov, Mark McLean, Irina Kalish, Eric B. Steel
Atom probe tomography (APT) is an emergent characterization technique that has begun to see widespread use within the last 15 years. The technique offers the highest spatial resolution of any mass spectrometry technique for solid-state specimens, as well

Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides

July 28, 2021
Author(s)
Varun Verma, Richard Mirin, Sae Woo Nam, Jan P. Hoepker, Maximilian Protte, Raimund Ricken, Victor Quiring, Christof Eigner, Christine Silberhorn, Tim J. Bartley
We demonstrate the integration of amorphous tungsten silicide superconducting nanowire single- photon detectors on titanium in-diffused lithium niobate waveguides. We show proof-of-principle detection of evanescently-coupled photons of wavelength 1550nm

Small-Angle Neutron Scattering Characterization of SrCl 2 -ENG Composite for Thermochemical Heat Storage

July 28, 2021
Author(s)
Anastasiia Karabanova, Kenneth D. Knudsen, Perizat Berdiyeva, Leide P. Cavalcanti, Yun Liu, Michel van der Pal, Stefano Deledda, Didier Blanchard
This work presents an in-situ nanoscale structural characterization of the composite material SrCl 2-Expanded Natural Graphite (ENG) during ammonia absorption and desorption, using small angle neutron scattering (SANS) together with X-ray powder

Layered Double Perovskites

July 26, 2021
Author(s)
Hayden Evans, Lingling Mao, Ram Seshadri, Anthony K. Cheetham
Successful strategies for the design of crystalline materials with useful function are frequently based on the systematic tuning of chemical composition within a given structural family. Perovskites with the formula ABX 3, perhaps the best-known example of
Displaying 626 - 650 of 2343
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