Journals

Bottlebrush polymers in the melt and polyelectrolytes in solution share common structural features

March 10, 2020

Author(s)

Joel M. Sarapas, Tyler B. Martin, Alexandros Chremos, Jack F. Douglas, Kathryn L. Beers

Many naturally occurring polyelectrolytes of importance in diverse biological functions have the form of bottlebrush polymers, and there is correspondingly

Photonic spin-multiplexing metasurface for switchable spiral phase contrast imaging

March 10, 2020

Author(s)

Pengcheng Huo, Cheng Zhang, Wenqi Zhu, Mingze Liu, Song Zhang, Si Zhang, Lu Chen, Henri Lezec, Amit Agrawal, Yanqing Lu, Ting Xu

As the two most representative operation modes in an optical imaging system, bright-field imaging and phase contrast imaging can address different

Large Enhancement of Magnetocaloric and Barocaloric Effects by Hydrostatic Pressure in La(Fe_0.92Co_0.08)_11.9Si_1.1 with a NaZn₁₃-Type Structure

March 10, 2020

Author(s)

Jiazheng Hao, Fengxia Hu, Jian-Tao Wang, Fei-Ran Shen, Zibing Yu, Houbo Zhou, Hui Wu, Qingzhen Huang, Kaiming Qiao, Jing Wang, Jun He, Lunhua He, Ji-Rong Sun, Baogen Shen

Solid state refrigeration based on caloric effect has been regarded as an attractive alternative to conventional gas compression technique. Boosting the caloric

A frequency-dependent effective medium model for the rheology of crystallizing polymers

March 9, 2020

Author(s)

Anthony P. Kotula

The rheology of crystallizing polymers is critical to polymer processing, but our current understanding of how crystallinity affects rheology during

Entrance effects and high shear rate rheology of shear banding wormlike micelle fluids in a microcapillary flow

March 9, 2020

Author(s)

Paul Salipante, Vishnu Dharmaraj, Steven D. Hudson

The viscosity of a shear-banding wormlike micelle solution at high shear rates is investigated using capillary rheology and particle streak velocimetry

Targeted enrichment of 28Si thin films for quantum computing

March 9, 2020

Author(s)

Ke Tang, Hyun S. Kim, Aruna N. Ramanayaka, David S. Simons, Joshua M. Pomeroy

We report on the growth of isotopically enriched 28Si epitaxial films with precisely controlled enrichment levels, ranging from natural abundance ratio of 92.2%

Nitrogen effects in additively manufactured martensitic stainless steels I: Conventional thermal processing and comparison with wrought

March 9, 2020

Author(s)

Eric Lass, Carelyn E. Campbell, Fan Zhang

The microstructures or additively manufactured (AM) precipitation-hardenable stainless steels 17-4 and 15-5 were investigated and compared to conventionally

Intumescent Polydopamine Coatings for Fire Protection

March 9, 2020

Author(s)

Douglas M. Fox, Whirang Cho, Laura J. Dubrulle, Phillip Grutzmacher, Mauro Zammarano, Douglas M. Fox

Polydopamine coatings containing additional bioderived flame retardants were used as coatings for polyurethane foam and cardboard. The ability to form

Hydrodynamic Factors Influencing Mineral Dissolution Rates

March 9, 2020

Author(s)

Nicos Martys, Jeffrey W. Bullard, Pan Feng, Shaoxiong Ye

Solution flow profiles near a mineral surface can have significant influences on the local thermodynamic driving force and, potentially, the rate-controlling

Observation of a C-type Short-Range Antiferromagnetic Order in Lyaer Spacing Expanded FeS

March 9, 2020

Author(s)

Meng Wang, Ming Yi, Benjamin A. Frandsen, Junjie Yin, Hualei Sun, Zhijun Xu, Huibo Cao, Edith Bourret-Courchesne, Jeffrey W. Lynn, Robert J. Birgeneau

We report neutron diffraction studies of FeS single crystals obtained from Rb xFe 2-yS 2 single crystals via a hydrothermal method. While no √5 x √5 iron

Terminating basic hypergeometric representations, transformations and summations for the symmetric and q-inverse symmetric subfamilies of the Askey-Wilson polynomials

March 8, 2020

Author(s)

Howard Cohl, Roberto S. Costas-Santos, Linus Ge

In this survey paper, we exhaustively explore the terminating basic hypergeometric representations of the Askey–Wilson polynomials and the corresponding

Polarization Dependence of Charge Conduction in Conjugated Polymer Films Investigated with Time- Resolved Terahertz Spectroscopy

March 6, 2020

Author(s)

Timothy J. Magnanelli, Sebastian Engmann, Jared K. Wahlstrand, John C. Stephenson, Lee J. Richter, Edwin J. Heilweil

We interrogate polarization anisotropy associated with charge conduction in films of the block co polymer PCDTPT, consisting of alternating cyclopenta

BILATERAL KEY COMPARISON CCT-K6.2 ON HUMIDITY STANDARDS IN THE FROST-POINT TEMPERATURE RANGE FROM –80 °C TO -30 °C

March 5, 2020

Author(s)

Christopher Meyer, Hisashi Abe

A Consultative Committee on Thermometry (CCT) Key Comparison of frost point temperatures was carried out by the National Institute of Standards and Technology

Visualizing Shed Skin Cells in Fingerprint Residue using Dark Field Microscopy

March 5, 2020

Author(s)

Shinichiro N. Muramoto, William Osborn, J Greg Gillen

The proof of concept study was able to show that dark field microscopy could be used to provide sufficient contrast for cell visualization in fingerprints with

Energy-efficient stochastic computing with superparamagnetic tunnel junctions

March 5, 2020

Author(s)

Matthew W. Daniels, Advait Madhavan, Philippe Talatchian, Alice Mizrahi, Mark D. Stiles

Stochastic computing has been limited by the inaccuracies introduced by correlations between the pseudorandom bitstreams used in the calculation. We hybridize a

Lateral Resistance Reduction to Cold-Formed Steel-Framed Shear Walls under Various Fire Scenarios

March 5, 2020

Author(s)

Matthew S. Hoehler, Blanca Andres Valiente, Matthew F. Bundy

This paper examines the structural response of cold-formed steel-framed building lateral force- resisting systems under combinations of simulated earthquake and

Pipe Flow of Sphere Suspensions having a Power-Law-Dependent Fluid Matrix

March 5, 2020

Author(s)

Nicos Martys, William L. George, Ryan P Murphy, Kathleen M Weigandt

Measurement and prediction of suspension flow properties in cylindrical geometries represents a significant challenge for both the experimentalist and modeller

Effects of Stretch and Radiation on the Laminar Burning Velocity of R-32-Air Flames

March 4, 2020

Author(s)

Michael Hegetschweiler, John Pagliaro, Lukas Berger, Raik Hesse, Joachim Beeckmann, Heinz Pitsch, Gregory Linteris

Experiments are performed for outwardly propagating spherical flames of R-32/air mixtures at constant pressure. A high-speed video camera captures shadowgraph

Dielectronic resonances of LMn and LNn (? 4) series in highly-charged M-shell tungsten ions

March 4, 2020

Author(s)

Dipti Goyal, A. Borovik, Jr., R. Silwal, Joan M. Dreiling, Amy C. Gall, Endre Takacs, Yuri Ralchenko

We present accurate spectroscopic measurements and detailed theoretical analysis of inner-shell LM$n$ and LN$n$ ($n$ $\geq$ 4) dielectronic resonances (DR) in

Strain-Induced Majority Carrier Inversion in Ferromagnetic Epitaxial LaCoO^d3-δ Thin Films

March 4, 2020

Author(s)

Vipul Chaturvedi, Jeff Walter, Arpita Paul, Alexander Grutter, Brian Kirby, Jong Seok Jeong, Hua Zhou, Zhan Zhang, Biqiong Yu, Martin Greven, K. Andre Mkhoyan, Turan Birol, Chris Leighton

Tensile-strained LaCoO 3-δ thin films are ferromagnetic, in sharp contrast to the zero-spin bulk, although no clear consensus has emerged as to the origin of

Mixed Metal-Organic Framework with Multiple Binding Sites for Efficient C₂H₂/CO₂ Separation

March 4, 2020

Author(s)

Junkuo Gao, Xuefeng Qian, Rui-Biao Lin, Rajamani Krishna, Hui Wu, Wei Zhou, Banglin Chen

The C 2H 2/CO 2 separation is particularly challenging owing to their high similarity in physical properties and molecular sizes, but of industrial significance

Optical evidence of the chiral magnetic anomaly in the Weyl semimetal TaAs

March 4, 2020

Author(s)

Antonio L. Levy, Andrei Sushkov, Fengguang Liu, Bing Shen, Ni Ni, Howard D. Drew, Gregory Jenkins

Chiral pumping from optical electric fields oscillating at THz frequencies is observed in the Weyl material TaAs with electric and magnetic fields aligned along

Location-specific Microstructure Characterization Within IN625 Additive Manufacturing Benchmark Test Artifacts

March 3, 2020

Author(s)

Mark R. Stoudt, Maureen E. Williams, Lyle E. Levine, Adam Abel Creuziger, Sandra A. Young, Jarred C. Heigel, Brandon Lane, Thien Q. Phan

Additive manufacturing (AM) of metals creates segregated microstructures with significant differences from those of traditional wrought alloys. Understanding

Simulation of indoor and outdoor air quality and health impacts following installation of energy-efficient retrofits in a multifamily housing unit

March 2, 2020

Author(s)

Lindsay Underhill, Chad W. Milando, Jonathan I. Levy, William Stuart Dols, Sharon K. Lee, M. Patricia Fabian

Efforts to reduce energy consumption and greenhouse gas emissions in the United States have led to widespread interest in energy-efficient retrofits in the

Disparate Metabolomics Data Reassembler: A Novel Algorithm for Agglomerating Incongruent LC-MS Metabolomics Datasets

March 2, 2020

Author(s)

Tytus D. Mak, Maryam Goudarzi, Evagelia C. Laiakis, Stephen E. Stein

In the past decade, the field of LC-MS based metabolomics has transformed from an obscure specialty into a major -omics platform for studying metabolic

Upper bound of feed rates in thermoplastic material extrusion based additive manufacturing

March 2, 2020

Author(s)

Cheng Luo, Xiang Wang, Kalman D. Migler, Jonathan Seppala

In this work, we develop a simple model to determine the upper bound of feed rates that do not cause jamming in materials extrusion based additive manufacturing

Results and model for single-gate ratchet charge pumping

March 2, 2020

Author(s)

Roy E. Murray, Justin K. Perron, Michael Stewart, Antonio L. Levy, Patrick See, Stephen Giblin, Jonathan Fletcher, Masaya Kataoka, Neil M. Zimmerman

Neuromorphic Spintronics

March 2, 2020

Author(s)

Julie Grollier, Damien Querlioz, Kerem Camsari, Karin Everschor-Sitte, Shunsuke Fukami, Mark D. Stiles

Two Decades of Speaker Recognition Evaluation at the National Institute of Standards and Technology

March 1, 2020

Author(s)

Craig S. Greenberg, Seyed Omid Sadjadi, Lisa Mason, Douglas A. Reynolds

The National Institute of Standards and Technology has been conducting Speaker Recognition Evaluations (SREs) for over 20 years. This article provides an

Development of test methods to rigorously, reproducibly, and accurately measure the detection performance of walk-through metal detectors

March 1, 2020

Author(s)

Nicholas G. Paulter Jr.

Walk-through metal detectors (WTMDs) are a primary tool for detection of concealed metal contraband and threat items on a person. They are found at almost all