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Displaying 12251 - 12275 of 73927

Direct DC 10 V comparison between two Programmable Josephson Voltage Standards made of Niobium Nitride (NbN)-based and amorphous niobium silicon (NbxSi1-x)-based Josephson Junctions

March 15, 2018
Author(s)
Alain Rufenacht, Stephane Solve, M Maruyama, Chiharu Urano, Nobu Kaneko
For the first time, the BIPM’s new transportable programmable Josephson voltage standard (PJVS) has been used for an on-site comparison at the National Metrology Institute of Japan (NMIJ), the National Institute of Advanced Industrial Science and

Formation of Nb-rich droplets in laser deposited Ni-matrix microstructures

March 15, 2018
Author(s)
Supriyo Ghosh, Mark R. Stoudt, Lyle E. Levine, Jonathan E. Guyer
Ni-rich $\gamma$ cells/dendrites and Nb-rich eutectic droplets that form during laser power bed fusion (LPBF) solidification of Ni-Nb alloys are studied in the present work using numerical simulations. Finite element simulations estimate the local cooling

Inductive detection of fieldlike and dampinglike ac inverse spin-orbit torques in ferromagnet/normal-metal bilayers

March 15, 2018
Author(s)
Andy Berger, Eric R. Edwards, Hans T. Nembach, Justin M. Shaw, Alexy D. Karenowska, Mathias Weiler, Thomas J. Silva
Phenomena that result from strong spin-orbit coupling (SOC) at ferromagnet/normal metal (FM/NM) interfaces hold great promise for the development of efficient and scalable spintronic devices. SOC drives non-equilibrium spin-charge conversion, manifest as

Enabling Robot Agility in Manufacturing Kitting Applications

March 14, 2018
Author(s)
Zeid Kootbally, Craig I. Schlenoff, Brian Antonishek, Frederick M. Proctor, Thomas Kramer, William Harrison, Satyandra K. Gupta
For the most part, robots perform best in highly structured environments, where objects are in well-known, predictable loca-tions. Another way to describe this is that robots are not considered agile. But, in order for them to be useful to small manu

Fog Computing Conceptual Model

March 14, 2018
Author(s)
Michaela Iorga, Larry Feldman, Robert Barton, Michael J. Martin, Nedim S. Goren, Charif Mahmoudi
Managing the data generated by Internet of Things (IoT) sensors and actuators is one of the biggest challenges faced when deploying an IoT system. Traditional cloud-based IoT systems are challenged by the large scale, heterogeneity, and high latency

Introduction: Special Issue on Enabling Robot Autonomy

March 14, 2018
Author(s)
Craig I. Schlenoff, Stephen B. Balakirsky, Henrik I. Christensen
Today's state-of-the-art robots are capable of sub-millimeter movement accuracy when performing highly repeatable tasks. They perform extremely well in highly structured environments, where objects are in well-known, predictable locations. However, robots

Nanoscale mapping and spectroscopy of non-radiative hyperbolic modes in hexagonal boron nitride nanostructures

March 14, 2018
Author(s)
Lisa Brown, Marcelo I. Davanco, Zhiyuan Sun, Andrey Kretinin, Yiguo Chen, Joseph R. Matson, Igor Vurgaftman, Nicholas Sharac, Alexander Giles, Michael Fogler, Takashi Taniguchi, Kenji Watanabe, Kostya Novoselov, Stefan Maier, Andrea Centrone, Joshua D. Caldwell
Because of its inherent crystal anisotropy, hexagonal boron nitride (hBN) supports naturally hyperbolic phonon polaritons, i.e. polaritons that can propagate with arbitrarily large wavevectors within the material volume, thereby enabling optical

Reply to comment on "Relativistic Theory of the Falling Cube Gravimeter"

March 14, 2018
Author(s)
Neil Ashby
The comment\cite{kren17} claims that the paper Relativistic theory of the falling cube gravimeter \cite{ashby17} is incorrect. The authors of this comment assert that optical paths in the two interferometer arms of an absolute gravimeter shift only the

A Critical Comparison of 3D Experiments and Simulations of Tricalcium Silicate Hydration

March 13, 2018
Author(s)
Jeffrey W. Bullard, John G. Hagedorn, Tyler Ley, Qinang Hu, Wesley N. Griffin, Judith E. Terrill
Advances in nano-computed X-ray tomography (nCT), nano X-ray fluorescence spectrometry (nXRF), and high-performance computing have now enabled the first ever direct comparison between observations of three-dimensional nanoscale microstructure evolution

Local spin-wave dispersion and damping in thin yttrium-iron-garnet films

March 13, 2018
Author(s)
Rouven Dreyer, Niklas Liebing, Eric R. Edwards, Georg Woltersdorf
Using ultrafast magneto-optic sampling microscopy, we investigate the spin-wave dispersion and spin-wave damping in yttrium-iron-garnet films. With the aid of the inhomogeneous magnetic field generated by coplanar waveguides spin-waves are excited at a

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

Towards Traceable Transient Pressure Metrology

March 13, 2018
Author(s)
Douglas A. Olson, Haijun Liu, Zeeshan Ahmed, Kevin O. Douglass
Here we detail our progress in developing the infrastructure for traceable transient measurements of pressure and temperature. Towards that end, we have built and characterized a dual diaphragm shock tube that allows us to achieve shock amplitude

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

A Soot Deposition Gauge for Fire Measurements

March 12, 2018
Author(s)
Amy E. Mensch, Thomas G. Cleary
The goal of this exploratory project is to demonstrate the feasibility of a conductometric measurement to determine the time-resolved soot deposition on surfaces in fire environments. Quantitative soot deposition data enabled by this measurement method is
Displaying 12251 - 12275 of 73927
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