Journals

Candidates to Replace R-12 as a Radiating Gas in Cherenkov Detectors

April 14, 2018

Author(s)

Allan H. Harvey, Yauheni Paulechka, Patrick F. Egan

Dichlorodifluoromethane (R-12) has been used as a radiating gas in pressure threshold Cherenkov detectors for high-energy particle physics. However, that ozone...

Waveguide coupling via magnetic gratings with effective strips

April 14, 2018

Author(s)

Kevin Roccapriore, David Lyvers, Dean Brown, Ekaterina Poutrina, Augustine Urbas, Thomas Germer, Vladimir Drachev

Gratings with complex multilayer strips are studied under inclined incident light. Great interest in these gratings is due to applications as input/output tools...

Ultrafast Photodynamics of Cyano-Functionalized [FeFe]-Hydrogenase Model Compounds

April 13, 2018

Author(s)

Christopher J. Stromberg, Edwin J. Heilweil

[FeFe]-hydrogenases are efficient enzymes that produce hydrogen gas under mild conditions. Synthetic model compounds containing all CO or mixed CO/PMe3 ligands...

Xi-cam: A versatile interface for data visualization and analysis

April 13, 2018

Author(s)

Ronald Pandolfi, Dinesh Kumar, Guillaume Freychet, Holden Parks, Singanallur venkatakrishnan, Austin Blair, shreya Sahoo, Stefano marchesini, Christopher D. Liman, Daniel Sunday, Lenson Pellouchoud, Christopher Tassone, dilworth parkinson, Sean Fackler, Zhang Jiang, Apurva Mehta, Masafumi Fukuto, Kevin G. Yager, Regis J. Kline, Joseph Strzalka, Thomas Caswell, daniel Allan, Stuart Campbell, James Sethian, Harinarayan Krishnan, Alexander Hexemer

Nanoconfinement-Induced Phase Segregation of Binary Benzene-Cyclohexane Solutions within a Chemically Inert Matrix

April 12, 2018

Author(s)

Kathryn Krycka, Joseph A. Dura, II Langston, Christopher M. Burba

While a clear understanding of the effects of nanoconfinement on phase transitions of single components liquids is emerging, binary solutions hold promise to...

Quantum Oscillations from the Reconstructed Fermi Surface in Electron-Doped Cuprate Superconductors

April 12, 2018

Author(s)

J. S. Higgins, M. K. Chan, Tarapada Sarkar, R. McDonald, R. L. Greene, Nicholas Butch

We have studied the electronic structure of electron-doped cuprate superconductors via measurements of high-field Shubnikov-de Haas oscillations in thin films...

Fabrication and Characterization of Hybrid Stealth Liposomes

April 12, 2018

Author(s)

Kenneth Mineart, Vivek Prabhu, Shrinivas Venkataraman, Yi Yan Yang, James Hedrick

Heat Capacity of Saturated and Compressed Liquid Dimethyl Ether at Temperatures from (132 to 345) K and at Pressures to 35 MPa

April 11, 2018

Author(s)

Joe W. Magee, Jiangtao Wu

Molar heat capacities at constant volume (C_v) of dimethyl ether have been measured with an adiabatic calorimeter. Temperatures range from the triple point to...

Instrumented impact testing of miniaturized Charpy specimens of AM Ti-6Al-4V

April 11, 2018

Author(s)

Enrico Lucon, Nikolas W. Hrabe

An investigation on the impact toughness properties of wrought and additively-manufactured (AM) Ti 6Al 4V was conducted at NIST Boulder, by means of...

Heat Transfer in a Falling Laminar Liquid Film with in-depth Radiation Absorption

April 11, 2018

Author(s)

Jiann C. Yang, Walter W. Yuen

A heat transfer problem involving a steady-state falling liquid film along a vertical wall with an imposed constant heat flux on the liquid film surface and an...

Experimentally Generated Random Numbers Certified by the Impossibility of Superluminal Signaling

April 11, 2018

Author(s)

Peter L. Bierhorst, Emanuel H. Knill, Scott C. Glancy, Yanbao Zhang, Alan Mink, Stephen P. Jordan, Andrea Rommal, Yi-Kai Liu, Bradley Christensen, Sae Woo Nam, Martin J. Stevens, Lynden K. Shalm

From dice to modern complex circuits, there have been many attempts to build increasingly better devices to generate random numbers. Today, randomness is...

Photonic chip for laser stabilization to an atomic vapor at a precision of $10^{-11}$

April 11, 2018

Author(s)

Matthew T. Hummon, Songbai Kang, Douglas G. Bopp, Qing Li, Daron A. Westly, Sangsik Kim, Connor D. Fredrick, Scott A. Diddams, Kartik A. Srinivasan, John E. Kitching

We perform precision spectroscopy of rubidium confined in a micro-machined, 27~mm$^3$ volume, vapor cell using a collimated free space 120~$\bm{\mu}$m diameter...

Improving accuracy of electrochemical capacitance and solvation energetics in first-principles calculations

April 11, 2018

Author(s)

Ravishankar Sundararaman, Kendra Letchworth-Weaver, Kathleen Schwarz

Reliable first-principles calculations of electrochemical processes require accurate prediction of the interfacial capacitance, a challenge for current...

The Evolution of Polystyrene as a Cell Culture Material: A Brief History

April 10, 2018

Author(s)

Max J. Lerman, Josephine Lembong, Shinichiro Muramoto, John G. Gillen, John P. Fisher

Polystyrene (PS) has brought in vitro cell culture from its humble beginnings to the modern era, propelling dozens of research fields along the way. This review...

Comparing modeling predictions of aluminum edge dislocations: semidiscrete variational Peierls- Nabarro versus atomistics

April 10, 2018

Author(s)

Lucas M. Hale

Multiple computational methods for modeling dislocations are implemented into a high-throughput calculation framework allowing for rigorous investigations...

Cholesterol Functionalized Aliphatic N-Substituted 8 Membered Cyclic Carbonate

April 10, 2018

Author(s)

Vivek M. Prabhu, Shrinivas Venkataraman, Kenneth Mineart, James Hedrick, Yi Yan Yang

Straightforward synthesis of cholesterol functionalized aliphatic N-substituted 8 membered cyclic carbonate monomer is reported. Well-defined PEGylated diblock...

Wideband infrared trap detector based upon doped silicon photocurrent devices

April 9, 2018

Author(s)

Solomon I. Woods, James E. Proctor, Timothy M. Jung, Adriaan C. Carter, Dana R. Defibaugh, Jorge Neira

We have designed, fabricated and measured infrared trapping detectors made from arsenic-doped silicon (Si:As) blocked impurity band (BIB) photodetectors. These...

Selection of Silicon Photomultipliers for a ⁶LiF:ZnS(Ag) Scintillator Based Cold Neutron Detector

April 8, 2018

Author(s)

A. Osovizky, Kevin N. Pritchard, Y. Yehuda-Zada, Jeffrey B. Ziegler, Peter NMN Tsai, M. Ghelman, Alan Keith Thompson, R. M. Ibberson, George M. Baltic, Charles Majkrzak, Nicholas C. Maliszewskyj

We describe the process of selecting a silicon photomultiplier (SiPM) as the light sensor for an ultrathin (2 nm) highly efficient cold neutron proportional...

Magnetic properties in ultra-thin 3d transition metal alloys II: experimental verification of quantitative theories of damping and spin-

April 7, 2018

Author(s)

Martin A. Schoen, Juriaan Lucassen, Hans T. Nembach, Thomas J. Silva, Bert Koopmans, Christian Back, Justin M. Shaw

A systematic study of the Gilbert damping is performed via ferromagnetic resonance for the disordered crystalline binary 3d transition metal alloys NiCo, NiFe...

Magnetic properties of ultra-thin 3d transition metal alloys I: spin and orbital moments and confirmation of Slater-Pauling theory

April 7, 2018

Author(s)

Martin A. Schoen, Juriaan Lucassen, Hans T. Nembach, Thomas J. Silva, Bert Koopmans, Christian Back, Justin M. Shaw

The structure and static magnetic properties - saturation magnetization, perpendicular anisotropy, Landé g-factor, and orbital magnetization - of thin film 3d...

Analyzing sustainability methods for use earlier in the product lifecycle

April 6, 2018

Author(s)

Michael P. Brundage, William Z. Bernstein, Timothy Kliks, Hidetaka Nishi, Steven Hoffenson, qing chang, Katherine C. Morris

Superconducting optoelectronic networks II: receiver circuits

April 6, 2018

Author(s)

Jeffrey M. Shainline, Sonia M. Buckley, Adam N. McCaughan, Manuel C. Castellanos Beltran, Christine A. Donnelly, Michael L. Schneider, Richard P. Mirin, Sae Woo Nam

Circuits using superconducting single-photon detectors and Josephson junctions to perform signal reception, synaptic weighting, and integration are investigated...

Superconducting optoelectronic networks I: general principles

April 6, 2018

Author(s)

Jeffrey M. Shainline, Sonia M. Buckley, Adam N. McCaughan, Jeffrey T. Chiles, Richard P. Mirin, Sae Woo Nam

The design of neural hardware is informed by the prominence of differentiated processing and information integration in cognitive systems. The central role of...

A Computational Study of Extinguishment and Enhancement of Propane Cup-Burner Flames by Halon and Alternative Agents

April 6, 2018

Author(s)

Gregory T. Linteris, Fumiaki Takahashi, Viswanath R. Katta, Valeri I. Babushok

Computations of cup-burner flames in normal gravity have been performed using propane as the fuel to reveal the combustion inhibition and enhancement by the...

Elementary Again

April 6, 2018

Author(s)

Mark W. Keller

Mark Keller explains how the elementary charge will soon be reinstated in metrology - and why it got sidelined in the first place.

On the Development of a Hydrogen-Assisted Fatigue Crack Growth Model for API Pipeline Steels

April 5, 2018

Author(s)

Andrew J. Slifka, Ryan M. White, Chris P. Looney, Elizabeth S. Drexler, Robert L. Amaro

Hydrogen has been proposed as a potential partial solution to the need for a clean energy economy. In order to make this a reality, large-scale hydrogen...

Mid-infrared frequency comb generation via cascaded quadratic nonlinearities in quasi-phase-matched waveguides

April 5, 2018

Author(s)

Abijith S. Kowligy, Alexander J. Lind, Daniel D. Hickstein, David R. Carlson, Henry R. Timmers, Nima Nader, Flavio Caldas da Cruz, Gabriel G. Ycas

We demonstrate mid-infrared (MIR) frequency comb generation in periodically poled lithium niobate (PPLN) waveguides pumped by nanojoule pulses from a 1.5 um...

pyPRISM: A Computational Tool for Liquid-State Theory Calculations of Macromolecular Materials

April 4, 2018

Author(s)

Tyler B. Martin, Thomas E. Gartner, Ronald L. Jones, Chad R. Snyder, Arthi Jayaraman

The Polymer Reference Interaction Site Model (PRISM) theory describes the equilibrium spatial-correlations of liquid-like polymer systems including melts...

A new magnet design for future Kibble balances

April 4, 2018

Author(s)

Stephan Schlamminger, Shisong Li, Michael Stock

We propose a new permanent magnet system for Kibble balance experiments, which combines advantages of the magnet designs invented by the National Physical...

The Multiplicative Complexity of 6-variable Boolean Functions

April 3, 2018

Author(s)

Cagdas Calik, Meltem Sonmez Turan, Rene C. Peralta

The multiplicative complexity of a Boolean function is the minimum number of AND gates that are necessary and sufficient to implement the function over the...