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NIST Authors in Bold

Displaying 12326 - 12350 of 73925

Near- and extended-edge x-ray-absorption fine-structure spectroscopy using ultrafast coherent high-order harmonic supercontinua

March 1, 2018
Author(s)
Dimitar Popmintchev, Benjamin Galloway, Ming-Chang Chen, Franklin Dolar, Christopher Mancuso, Amelia Hankla, Luis Miaja Avila, Galen O'Neil, Guangyu Fan, Skirmantas Alisauskas, Giedrius Andriukaitis, Tadas Balciunas, Oliver M?cke, Audrius Pugzlys, Andrius Baltuska, Henry C. Kapteyn, Tenio Popmintchev, Margaret M. Murnane
Phase matching of the high-order harmonic generation process now makes it possible to produce spatially and temporally coherent ultrafast X-ray beams, with bandwidths spanning more than 12 octaves, from the UV to the keV region. Here we report the first

Performance Evaluation of Energy Efficiency with Sleep Mode in Ultra Dense Networks

March 1, 2018
Author(s)
Hansong Xu, Wei Yu, Amirshahram Hematian, David W. Griffith, Nada T. Golmie
Massively deployed mobile devices and an extensive volume of data traffic will immensely increase demand on future wireless networks. The Ultra Dense Network (UDN), as one of key techniques in 5G, is expected to support massive connections and offload the

Pre-Viking Swedish Hillfort Glass: A Novel Long-Term Alteration Analogue for Vitrified 6 Nuclear Waste

March 1, 2018
Author(s)
Jamie L. Weaver, Carolyn Pearce, Rolf Sjoblom, John McCloy, Micah Miller, Tamas Varga, Bruce Arey, Michele Conroy, David Peeler, Robert Koestler, Paula DePriest, Edward Vicenzi, Albert Kruger
Examining ancient anthropogenic glasses altered in natural environments over hundreds of years can inform and verify models for predicting long-term rates of glass corrosion. Understanding corrosion mechanisms is critical for modeling the performance of

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

The NISTmAb Reference Material 8671 Value Assignment, Homogeneity, and Stability

March 1, 2018
Author(s)
John E. Schiel, Abigail Turner, Catherine A. Mouchahoir, Katharina S. Yandrofski, Srivalli Telikepalli, Jason King, Paul C. DeRose, Dean C. Ripple, Karen W. Phinney
The NISTmAb Reference Material (RM) 8671 is intended to be the common industry standard monoclonal antibody for pre-competitive research in harmonizing current state-of-the-art technology and designing next generation characterization technologies for

Vacuum Furnace for Degassing Stainless-Steel Vacuum Components

March 1, 2018
Author(s)
James A. Fedchak, Julia K. Scherschligt, Daniel S. Barker, Stephen P. Eckel, Alex P. Farrell, Makfir Sefa
Ultra-high vacuum systems must often be constructed of materials with ultra-low outgassing rates to achieve pressure of 10-6 Pa and below. In such a case, any component placed into the ultra-high vacuum system must also be constructed of materials with

Depth Dependant Element Analysis of PbMg 1/3 Nb 2/3 O 3 using Muonic X-rays

February 28, 2018
Author(s)
Katherine L Brown, Chris PJ Stockdale, Haosu Luo, X Zhao, Jiefang Li, Dwight Viehland, Guangyong Xu, Peter M. Gehring, K Ishida, A. D. Hillier, C. Stock
The relaxor PbMg 1.3Nb 2/3O 3 (PMN) has received attention due to its potential applications as a piezoelectric when doped with PbTiO3 (PT). Previous results have found that there are two phases existing in the system, one linked to the near-surface

Optical Fiber Fabry-Perot Micro-Displacement Sensor for MEMS In-plane Motion Stage

February 28, 2018
Author(s)
Yong Sik Kim, Nicholas Dagalakis, Young-Man Choi
Fabry-Perot interferometer sensors have been widely used in Micro-Electro-Mechanical-Systems (MEMS) due to high displacement accuracy and immunity to electromagnetic noises, but they are still limited by micro scale measurement range. In this paper, a

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

Two-Dimensional Coherent Spectroscopy of Transition Metal Dichalcogenides

February 28, 2018
Author(s)
Galan Moody
Optical two-dimensional coherent spectroscopy is an extremely useful tool for examining the structure and dynamics of semiconductors. The appeal of the technique is in its ability to resolve both individual-emitter and ensemble-averaged properties of

Optical-Frequency Measurements with a Kerr Microcomb and Photonic-Chip Supercontinuum

February 27, 2018
Author(s)
Erin S. Lamb, David R. Carlson, Daniel D. Hickstein, Jordan R. Stone, Scott A. Diddams, Scott B. Papp
Dissipative solitons formed in Kerr microresonators offer the promise of chip-scale frequency combs that can extend precision metrology outside of a laboratory environment. We explore the creation of an octave-spanning, 15 GHz repetition rate microcomb
Displaying 12326 - 12350 of 73925
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