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Journals

Diluvian clustering - A fast, effective algorithm for clustering compositional and other data

August 25, 2015

Author(s)

Nicholas Ritchie

Diluvian clustering is an unsupervised grid-based clustering algorithm well suited to interpreting large sets of noisy compositional data. The algorithm is...

Retrieval and classification methods for textured 3D models: A comparative study

August 25, 2015

Author(s)

Afzal A. Godil

This paper presents a comparative study of six methods for the retrieval and classification of tex- tured 3D models, which have been selected as represen-...

Direct Observation of Critical Adsorption on Colloidal Particles

August 25, 2015

Author(s)

Christopher E Bertrand, P. D. Godfrin, Yun Liu

Despite the fundamental role adsorbed solvent layers play in generating critical Casimir forces between colloidal particles, the structure of these layers has...

Microcalorimeter Spectroscopy at High Pulse Rates: a Multi-Pulse Fitting Technique

August 24, 2015

Author(s)

Joseph W. Fowler, Bradley K. Alpert, William B. Doriese, Young Il Joe, Galen C. O'Neil, Cherno Jaye, Joel N. Ullom, Daniel A. Fischer, Daniel S. Swetz

Transition edge sensor microcalorimeters can measure x-ray and gamma-ray energies with very high energy resolution and high photon-collection efficiency. For...

Diffraction limited focusing and directing of gap plasmons by a metal-dielectric-metal lens

August 24, 2015

Author(s)

Brian S. Dennis, David Czaplewski, Michael Haftel, Daniel Lopez, Girsh Blumberg, Vladimir Aksyuk

Passive optical elements can play key roles in photonic applications such as plasmonic integrated circuits. Here we experimentally demonstrate passive gap...

Enhanced Thermoelectric Properties for Cu2ZnSnSe4 with Ga-doping

August 22, 2015

Author(s)

Kaya Wei, Laura Beauchemin, Hsin Wang, Joshua Martin, George S. Nolas

Gallium doped Cu2ZnSnSe4 quaternary chalcogenides with and without excess Cu have been synthesized by elemental reaction and densified using hot pressing in...

Long Term Air Quality Monitoring in a Net-Zero Energy Residence Designed with Low Emitting Interior Products

August 21, 2015

Author(s)

Dustin G. Poppendieck, Lisa C. Ng, Andrew K. Persily, Al Hodgson

The National Institute of Standards and Technology (NIST) constructed a Net Zero Energy Residential Test Facility (NZERTF) to support the development and...

The PTEN Tumor Suppressor Forms Homodimers in Solution

August 21, 2015

Author(s)

Frank Heinrich, Srinivas Chakravarthy, Hirsh Nanda, Antonella Papa, Pier Paolo Pandolfi, Alonzo H. Ross, Rakesh K. Harishchandra, Arne Gericke, Peter M. Loesche

The PTEN tumor suppressor exerts phosphatase activity on PI(3,4,5)P 3 in the plasma membrane and was recently reported to dimerize in cell models. Here we show...

Overwhelming thermomechanical motion with microwave radiation pressure shot noise

August 21, 2015

Author(s)

John D. Teufel, Florent Q. Lecocq, Raymond W. Simmonds

We measure the fundamental noise processes associated with a continuous linear position measurement of a micromechanical membrane incorporated in a microwave...

Persistent Draining Crossover in DNA and Other Semi-Flexible Polymers: Evidence from Hydrodynamic Models and Extensive Measurements on DNA Solutions

August 20, 2015

Author(s)

Jack F. Douglas, Marc Mansfield

Although the scaling theory of polymer solutions has had many successes, this type of argument is deficient when applied to hydrodynamic solution properties...

Tuning photo-catalytic activities of TiO2 nanoparticles using dimethacrylate resins

August 20, 2015

Author(s)

Jirun Sun, Stephanie S. Watson, David Allsopp, Deborah Jacobs, Drago Skrtic

Unique photo-catalytic activities (PCAs) of titanium dioxide nanoparticles (TiO2 NPs) made them attractive in many potential applications for medical devices...

Zero-compensation method and reduced inductive voltage error for the AC Josephson voltage standard

August 20, 2015

Author(s)

Kunli Zhou, Jifeng Qu, Samuel Benz

In the pulse-driven ac Josephson voltage standard, the low frequency component of the drive signal increases the system complexity and induces unwanted voltages...

Probing the Structure, Composition and Spatial Distribution of Ligands on Gold Nanorods

August 20, 2015

Author(s)

Michael J. A. Hore, Xingchen Ye, Jamie Ford, Yuzhi Gao, Jiayang Fei, Qiong Wu, Stuart J. Rowan, Russell J. Composto, Christopher B. Murray, Boualem Hammouda

The structure and size of ligands attached to the surfaces of gold nanorods, such as adsorbed surfactants or grafted polymers, are important considerations that...

Improved electronic measurement of the Boltzmann constant by Johnson noise Thermometry

August 19, 2015

Author(s)

Weston L. Tew, Samuel P. Benz, Horst Rogalla, Alessio Pollarolo, David R. White, Jifeng Qu, Kunli Zhou

The unit of thermodynamic temperature, the kelvin, will be redefined in 2018 by fixing the value of the Boltzmann constant, k. The present CODATA recommended...

Dimensional Reduction of Duplex DNA Under Nanofluidic Slit Confinement

August 19, 2015

Author(s)

Luis Fernando Vargas Lara, Jack F. Douglas, Samuel M. Stavis, Elizabeth A. Strychalski, Jon C. Geist, Brian J. Nablo

There has been much recent interest in the dimensional properties of duplex DNA under nanoscale confinement conditions as a problem of fundamental interest in...

Test of a virtual cylindrical acoustic resonator for determining the Boltzmann constant

August 19, 2015

Author(s)

XiaoJuan Feng, Hong Lin, Keith A. Gillis, Michael R. Moldover, Jintao Zhang

We report progress in determining the Boltzmann constant k B using a virtual acoustic resonator derived by combining the measured frequencies of the...

Performance of a dual Fabry-Perot cavity refractometer

August 18, 2015

Author(s)

Patrick F. Egan, Jack A. Stone Jr., Jay H. Hendricks, Jacob E. Ricker, Gregory E. Scace, Gregory F. Strouse

We have built and characterized a refractometer that utilizes two Fabry-Perot cavities formed on a dimensionally stable spacer. In the typical mode of operation...

Utilizing Vapor Swelling of Surface-Initiated Polymer Brushes to Develop Quantitative Measurements of Brush Thermodynamics and Grafting Density

August 18, 2015

Author(s)

Sara V. Orski, Richard J. Sheridan, Edwin P. Chan, Kathryn L. Beers

The stimuli-responsive behavior of densely grafted polymer brushes makes them attractive for designing tunable coatings and thin film sensors, provided physical...

A compact optically coherent fiber frequency comb

August 18, 2015

Author(s)

Laura C. Sinclair, Jean-Daniel Deschenes, Lindsay I. Sonderhouse, William C. Swann, Isaac H. Khader, Esther Baumann, Nathan R. Newbury, Ian R. Coddington

We describe design and operation of a robust self-referenced, optically coherent frequency comb. The system robustness is derived from a combination of an...

svviz: a read viewer for validating structural variants

August 18, 2015

Author(s)

Noah Spies, Justin M. Zook, Marc L. Salit, Arend Sidow

We present svviz, a sequencing read visualizer for structural variants (SVs) that sorts and displays only reads relevant to a candidate SV. This is accomplished...

Nanostructures and Dynamics of Macromolecules Bound to Attractive Filler Surfaces

August 18, 2015

Author(s)

Naisheng Jiang, Maya K. Endoh, Tadanori Koga, Tomomi Masui, Hiroyuki Kishimoto, Michihiro Nagao, Sushil K. Satija, Takashi Taniguchi

We report in-situ structures and dynamics of polybutadiene (PB) chains bound to carbon black (CB) fillers (the so-called "bound polymer layer (BPL)") in a good...

Classification of Semiconducting Polymeric Mesophases to Optimize Device Post-Processing

August 17, 2015

Author(s)

Chad R. Snyder, Regis J. Kline, Dean M. DeLongchamp, Ryan C. Nieuwendaal, Lee J. Richter, Martin Heeney, Iain McCulloch

Semiconducting polymers form a variety of phases and mesophases that respond differently to post-deposition solvent or thermal treatments. Here it is shown that...

10 V Programmable Josephson Voltage Standard and its Application in Direct Comparison with the Conventional Josephson Voltage Standard

August 17, 2015

Author(s)

Yi-hua D. Tang, James Wachter, Alain Rufenacht, Gerald J. FitzPatrick, Samuel P. Benz

This paper briefly describes the working principle of the 10 V programmable Josephson voltage standard (PJVS) that was developed at the National Institute of...

Constraints on Exotic Dipole-Dipole Couplings between Electrons at the Micrometer Scale

August 17, 2015

Author(s)

Shlomi Salman Kotler, R. Ozeri, Derek F. Kimball

New constraints on exotic dipole-dipole interactions between electrons at the micrometer scale are established, based on a recent measurement of the magnetic...

Evaluation of two mitochondrial DNA biomarkers for prostate cancer detection

August 17, 2015

Author(s)

Samantha D. Maragh, Steven P. Lund

BACKGROUND: A 3.4kb deletion (3.4kbΔ) in mitochondrial DNA (mtDNA) found in histologically normal prostate biopsy specimens has been reported to be a biomarker...

Methods of Photoelectrode Characterization with High Spatial and Temporal Resolution

August 17, 2015

Author(s)

Thomas P. Moffat

Materials and photoelectrode architectures that are highly efficient, extremely stable, and made from low cost materials are required for commercially viable...

Magnetic mean-field modeling of solid solutions: Theoretical foundations with application to the hematite-ilmenite system

August 17, 2015

Author(s)

Karl Fabian, V P. Shcherbakov, S. McEnroe, P. Robinson, Benjamin P. Burton

By rigorously deriving A spatially averaged mean-ﬁeld model for fully or partially ordered members of the ilmenite-hematite solid solution series is rigorously...

Influence of Electron Doping on the Ground State of (Sr_1-xLa_x)₂IrO₄

August 17, 2015

Author(s)

Xiang Chen, Tom Hogan, D. Walkup, Wenwen Zhou, M. Pokharel, Mengliang Yao, Wei Tian, Thomas Z. Ward, Yang Zhao, Daniel E. Parshall, C. Opeil, Jeffrey W. Lynn, Vidya Madhavan, Stephen D. Wilson

The evolution of the electronic properties of electron-doped (Sr 1-xLa x) 2IrO 4 is experimentally explored as the solubility limit of La is approached. As...

Proximity-Driven Enhanced Magnetic Order at Ferromagnetic-Insulator-Magnetic-Topological Insulator Interface

August 17, 2015

Author(s)

Mingda Li, Cui-Zu Chang, Brian Kirby, Michelle E. Jamer, Wenping Cui, Lijun Wu, Peng Wei, Yimei Zhu, Don Heiman, Ju Li, Jagadeesh S. Moodera

Magnetic exchange driven proximity effect at a magnetic insulator/topological insulator (MI/TI) interface provides a rich playground for novel phenomena as well...

Heat Transfer Through Nanoscale Multilayered Thermal Barrier Coatings at Elevated Temperatures

August 15, 2015

Author(s)

Daniel Josell, Thao M. Nguyen, John E. Bonevich

Heat transfer through thermal barrier coatings (TBCs) composed of alternating nanometer thick layers of aluminum oxide and 7% yttria stabilized zirconia (7YSZ)...

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