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Displaying 15926 - 15950 of 73927

Miniature atomic scaler magnetometer for space based on the rubidium isotope 87 Rb

July 22, 2016
Author(s)
Haje Korth, Kim Strohbehn, Francisco Tejada, Andreas G Andreou, John Kitching, Svenja A. Knappe, S. John Lehtonen, Shaughn M. London, Matiwos Kafel
A miniature absolute scalar magnetometer based on the rubidium isotope 87Rb was developed for possible future operation in space. The instrument design implements both Mx and Mz mode operation and leverages a novel micro-electro-mechanical systems (MEMS)

Multi-Fingered Robotic Grasping: A Primer

July 22, 2016
Author(s)
Stefano Carpin, Shuo Liu, Joseph Falco, Karl Van Wyk
Grasping and manipulation has generated significant interest in the robotics community, and robotic grasping emerged as an autonomous area of research since the development of the first robotic hands. Notwithstanding, robotic grasping continues to be one

Structural and Magnetic Depth Profiles of Magneto-Ionic Heterostructures Beyond the Interface Limit

July 22, 2016
Author(s)
Dustin A. Gilbert, Alexander J. Grutter, Elke Arenholz, Kai Liu, Brian J. Kirby, Julie A. Borchers, Brian B. Maranville
Electric-field control of magnetism provides a promising route towards ultralow power information storage and sensor technologies. The effects of magneto-ionic motion have so far been prominently featured in the direct modification of interface chemical

Report from Open Problems Session at OPSFA-13

July 21, 2016
Author(s)
Howard S. Cohl, Richard Askey, Rick Beatson, Charles Dunkl, Christoph Koutschan, Sheehan Olver, Yuan Xu, Wolfgang Zu Castell, Wadim Zudilin, Ted Chihara
We provide the open problems presented at OPSFA-13, Gaithersburg, Maryland, June 4, 2015. Howard Cohl, National Institute of Standards and Technology, has collected these open problems.

Ultraviolet/Ozone as a tool to control grafting density in surface-initiated controlled-radical polymerizations via ablation of bromine

July 21, 2016
Author(s)
Richard J. Sheridan, Sara V. Orski, Shinichiro Muramoto, Christopher M. Stafford, Kathryn L. Beers
We used an ultraviolet-ozone (UVO) cleaner to create substrates for atom-transfer radical polymerization (ATRP) with varying surface initiator coverage. We collected complementary time-of-flight secondary ion mass spectrometry (ToF-SIMS) and X-ray

Additive Manufacturing: A Trans-disciplinary Experience

July 20, 2016
Author(s)
Paul W. Witherell, Albert W. Jones, Yan Lu
Traditional manufacturing has long permitted disciplines to operate in isolation: with designers, material suppliers, and manufactures often able to function independently towards the singular goal of creating a product. As products have become

Measurement-induced decoherence and information in double-slit interference

July 20, 2016
Author(s)
Joshua Kincaid, Kyle McLelland, Michael P. Zwolak
The double slit experiment provides the classic example of both interference and the effect of observation in quantum physics. When particles are sent individually through a pair of slits, a wave-like interference pattern develops; no such interference is

Using Category Theory to facilitate multiple manufacturing service database integration

July 20, 2016
Author(s)
Spencer J. Breiner, Albert T. Jones, David I. Spivak, Eswaran Subrahmanian, Ryan Wisnesky
The goal of this paper is to illustrate the use of category theory as a basis for the integration of manufacturing service databases. In this paper we use as our reference prior work by Kolvatunyu, et. al (2013) on the use of Ontology Web Language(OWL)

Anti-corrosive influence of Acetobacter biofilms on carbon steel

July 19, 2016
Author(s)
Danielle C. France
Microbiologically influenced corrosion (MIC) of carbon steel infrastructure is an emerging cost issue for the ethanol fuel industry. One bacterial species found in ethanol fuel environments, Acetobacter aceti, can convert ethanol to the corrosive species

FREE-STANDING SELF-ASSEMBLIES OF GALLIUM NITRIDE NANOPARTICLES: A REVIEW

July 19, 2016
Author(s)
Winnie K. Wong-Ng, Yucheng Lan, Jianye Li, Rola M. Derbeshi, Abdellah Lisfi
Gallium nitride (GaN) is an III-V semiconductor with a direct band-gap of 3.4 eV. GaN has important potentials in white light-emitting diodes, blue lasers, and field effect transistors because of its super thermal stability and excellent optical properties

Spatially patterned matrix elasticity directs stem cell fate

July 19, 2016
Author(s)
Chun Yang, Frank W. DelRio, Lena Basta, Hao Ma, Kyle Kyburz, Anouk Killaars, Kristi Anseth
There is a growing appreciation for the functional role of matrix mechanics in regulating stem cell self-renewal and differentiation. However, it is largely unknown how sub-cellular, spatial mechanical variations in the local extracellular environment

Coherent and incoherent coupling dynamics between neutral and charged excitons in Monolayer MoSe2

July 18, 2016
Author(s)
Kai Hao, Lixiang Xu, Philip Nagler, Akshay Singh, Kha Tran, Chandriker K. Dass, Rupert Huber, Tobias Korn, Xiaoqin Li, Galan Moody
The optical properties of semiconducting transition metal dichalcogenides are dominated by both neutral excitons (electron-hole pairs) and charged excitons (trions) that are stable even at room temperature. While trions directly influence charge transport

Experimental investigation of the detection mechanism in WSi nanowire superconducting single photon detectors

July 18, 2016
Author(s)
Rosalinda Gaudio, Jelmer J. Renema, Zili Zhou, Varun Verma, Jeff Shainline, Martin Stevens, Richard Mirin, Sae Woo Nam, Martin P. van Exter, Michiel J. de Dood, Andrea Fiore
We use quantum detector tomography to investigate the detection mechanism in WSi nanowire superconducting single photon detectors (SSPDs). To this purpose, we fabricated a 250 nm wide and 250 nm long WSi nanowire and measured its response to impinging

Hydrogen Storage and Selective, Reversible O 2 Adsorption in a Metal-Organic Framework with Open Chromium(II) Sites

July 18, 2016
Author(s)
Eric D. Bloch, Wendy L. Queen, Matthew Ross Hudson, Jarad A. Mason, Dianne J. Xiao, Leslie J. Murray, Roxana Flacau, Craig Brown, Jeffrey R. Long
A chromium(II)-based metal-organic framework, Cr 3[Cr 4Cl) 3(BTT) 8] 2 (Cr-BTT;BTT 3- = 1,3,5-benzenetrisetrazolate), featuring coordinatively-unsaturated, redox-active Cr 2+ cation sites was synthesized and investigated for potential applications in H 2

Interfacial magnetic anisotropy from a 3-dimensional Rashba substrate

July 18, 2016
Author(s)
Junwen Li, Paul M. Haney
We study the magnetic anisotropy which arises at the interface between a thin film ferromagnet and a 3-d Rashba material. The 3-d Rashba material is characterized by the spin-orbit strength $\alpha$ and the direction of broken bulk inversion symmetry $\hat

Multiscale Metrologies for Process Optimization of Carbon Nanotube Polymer Composites

July 18, 2016
Author(s)
Bharath N. Natarajan, Nate Orloff, Rana N. Ashkar, Sagar Doshi, Kevin A. Twedt, Ajay Krishnamurthy, Chelsea S. Davis, Aaron M. Forster, Erik Thostenson, Jan Obrzut, Renu Sharma, James Alexander Liddle
Carbon nanotube (CNT) polymer composites are materials with attractive multifunctional properties that are becoming used in a growing range of commercial applications. With the increasing demand for these materials, it is imperative to develop methods for

Phonon Anharmonicity in Bulk Td-MoTe2

July 18, 2016
Author(s)
Albert Davydov, Sergiy Krylyuk, Irina Kalish, Ryan Beams, Patrick Vora
We examine anharmonic contributions to the optical phonon frequency in bulk Td-MoTe2 phase through temperature-dependent Raman spectroscopy. At temperatures greater than 100 K we find that the optical phonon modes redshift linearly with temperature in
Displaying 15926 - 15950 of 73927
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