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Journals

Effect of Al2O3 Nanolubricant on R134a Pool Boiling Heat Transfer

September 8, 2012

Author(s)

Mark A. Kedzierski

This paper quantifies the influence of Al2O3 nanoparticles on the pool boiling performance of R134a/polyolester mixtures on a roughened, horizontal, flat...

Observation of spin-valve effect in Alq3 using a low work function metal

September 7, 2012

Author(s)

Hyuk-Jae Jang, Kurt Pernstich, David J. Gundlach, Oana Jurchescu, Curt A. Richter

We present the observation of magnetoresistance in Co/Ca/Alq3/Ca/NiFe spin-valve devices. Thin Ca layers contacting 150 nm thick Alq3 enable the injection of...

100-Fold Reduction of Electric-Field Noise in an Ion Trap Cleanded with In Situ Argon-Ion-Beam Bombardment

September 7, 2012

Author(s)

Dustin Hite, Yves Colombe, Andrew C. Wilson, Kenton R. Brown, Ulrich J. Warring, Robert Jordens, John D. Jost, David P. Pappas, Dietrich Leibfried, David J. Wineland, Kyle McKay

Anomalous heating of trapped atomic ions is a major obstacle to their use as quantum bits in scalable quantum computers. The physical origin of this electric...

Anisotropy induced Feshbach resonances in a quantum dipolar gas of magnetic atoms.

September 7, 2012

Author(s)

A Petrov, Svetlana A. Kotochigova, Eite Tiesinga

We explore the anisotropic nature of Feshbach resonances in the collision between ultracold magnetic submerged-shell dysprosium atoms, which can only occur due...

Simulating Capacitances to Silicon Quantum Dots: Breakdown of the Parallel Plate Capacitor Model

September 5, 2012

Author(s)

Ted C. Thorbeck, Akira Fujiwara, Neil M. Zimmerman

The ability to design gate capacitances to quantum dots is critical for many applications of quantum dots from quantum information and single electron logic to...

Relating Compressive Strength to Heat Release in Mortars

September 4, 2012

Author(s)

Dale P. Bentz, Tim Barrett, Igor de la Varga, William J. Weiss

Conventionally, isothermal calorimetry and ASTM C186 heat of hydration results are reported on a per mass of cement (powder) basis, with typical units being J/g...

Ultrafast manetization enhancement in metallic multilayers driven by superdiffusive spin current

September 4, 2012

Author(s)

Thomas J. Silva, Justin M. Shaw, Hans T. Nembach, Dennis Rudolf, Chan La-O-Vorakiat, Marco Battiato, Roman Adam, Emrah Turgut, Stefan Mathias, Margaret M. Murnane, Henry C. Kapteyn, Claus M. Schneider

Uncovering the physical mechanisms that govern ultrafast charge and spin dynamics is crucial for understanding correlated matter as well as the fundamental...

"A Game About Standards"

September 4, 2012

Author(s)

Erik Puskar

The National Institute of Standards and Technologys Standards Coordination Office offers training to government agencies on standards, conformity assessment...

Anisotropic frequency response of spin-torque oscillators with applied field polarity and direction

September 4, 2012

Author(s)

Matthew R. Pufall, William H. Rippard, Stephen E. Russek, Eric R. Evarts

We have measured spin-torque-driven oscillations of Ni80Fe20 free-layer nanocontacts as a function of field direction. For a given field axis angle (10◦ from...

Role of Particle/Polymer Interphase in Long-Term Performance of Nanofilled Polymeric Coatings

September 3, 2012

Author(s)

Xiaohong Gu, Guodong Chen, Minhua Zhao, Stephanie S. Watson, Tinh Nguyen, Joannie W. Chin, Jonathan W. Martin

Counting on Today's Students

September 3, 2012

Author(s)

Isabel M. Beichl

Assessment of Factors Affecting Fire Performance of Mattresses: A Review

September 3, 2012

Author(s)

Rick D. Davis, Shonali Nazare, Kathryn M. Butler

An in-depth analysis of U.S. residential fire statistics shows that although the total number of fires and deaths due to mattress fires has dropped as a result...

A 10 V programmable Josephson voltage standard and its applications for voltage metrology

September 3, 2012

Author(s)

Yi-hua D. Tang, Vijay Ojha, Stephan Schlamminger, Alain Rufenacht, Charles J. Burroughs, Paul D. Dresselhaus, Samuel P. Benz

The concept of a programmable Josephson voltage standard was first proposed in 1997. Since then a significant amount of research and development work has been...

Evaluation of viability and proliferation profiles on macrophages treated with silica nanoparticles in vitro via plate-based, flow cytometry, and Coulter counter assays

September 3, 2012

Author(s)

Simona Bancos, De-Hao D. Tsai, Vincent A. Hackley, J L. Weaver, Katherine M. Tyner

Nanoparticles (NPs) are known to interfere with many high throughput cell viability and cell proliferation assays, which complicates the assessment of their...

Developing qualitative LC-MS methods for characterization of Vaccinium berry Standard Reference Materials

September 2, 2012

Author(s)

Mark S. Lowenthal, Melissa M. Phillips, Catherine A. Rimmer, Paul A. Rudnick, Yamil Simon, Stephen E. Stein, Karen W. Phinney

A New Limit on Time-Reversal Violation in Beta Decay

September 2, 2012

Author(s)

Hans P. Mumm, T E. Chupp, K P. Coulter, R L. Cooper, S J. Freedman, B. K. Fujikawa, A. Garcia, Gordon L. Jones, Jeffrey S. Nico, Alan K. Thompson, C A. Trull, J. F. Wilkerson, F. E. Wiefeldt

We report the results of an improved determination of the triple correlation DP (p_e × p_v) that can be used to limit possible time-reversal invariance in the...

Signal Processing Techniques for Smart Grid: Scanning the Issue

September 2, 2012

Author(s)

Hamid Gharavi

This is an editorial article for a special issue on Smart Grid. The main emphasis of this issue is the technical challenges of the Smart Grid from a signal...

Overview of the Structural Design of World Trade Center 1, 2, and 7

September 1, 2012

Author(s)

Therese P. McAllister, Fahim Sadek, John L. Gross, Jason D. Averill, Richard G. Gann

This paper summarizes the primary structural systems which comprised World Trade Center 1, World Trade Center 2, and World Trade Center 7. The buildings were...

Disentangling the effects of polymer coatings on silver nanoparticle agglomeration, dissolution, and toxicity to determine mechanisms of nanotoxicity

September 1, 2012

Author(s)

Justin M. Zook, Melissa D. Halter, Danielle Cleveland, Stephen E. Long

Silver nanoparticles (AgNPs) are frequently coated by a variety of polymers, which may affect various intertwined mechanisms of toxicity, including...

A Sub-Sampling Digital PM/AM Noise Measurement System

September 1, 2012

Author(s)

Craig W. Nelson, David A. Howe

A digital phase/amplitude modulation (PM/AM) noise measurement systems (DNMS) implementing field progammable gate array (FPGA) based digital down converters...

Expression and characterization of 15N-labeled human C-reactive protein in Escherichia coli and Pichia pastoris for use in isotope-dilution mass spectrometry

September 1, 2012

Author(s)

Eric L. Kilpatrick, Wei-Li Liao, Johanna Camara, Illarion V. Turko, David M. Bunk

Isotope dilution mass spectrometry using stable isotope labeled internal standards is unsurpassed in its ability to quantify analytes with accuracy and low...

Comment on Estimation of organ and effective dose due to Compton backscatter security scans [Med. Phys. 39, 3396 (2012)]

September 1, 2012

Author(s)

Lawrence T. Hudson, Jack L. Glover

In the June Issue of Medical Physics, Hoppe and Schmidt presented estimates of the organ and effective dose from an x-ray backscatter scan using a Rapiscan...

Comparing the Performance of Residential Fire Sprinklers with Other Life Safety Technologies

September 1, 2012

Author(s)

David T. Butry

Residential fire sprinklers have long proven themselves as life safety technologies to the fire service community. Only until recently have they shown to be...

UV-Assisted Alcohol Sensing Using SnO_(2) Functionalized GaN Nanowire Devices

September 1, 2012

Author(s)

Ritu Bajpai, Abhishek Motayed, Albert Davydov, Vladimir Oleshko, Geetha G. Aluri, Kristine A. Bertness, Mulpuri V. Rao, Mona E. Zaghloul

A chemiresistor type sensor for selective alcohol sensing has been realized from gallium nitride nanowires (NWs) functionalized with sputter-deposited tin...

Full-Wave Analysis of Dielectric-Loaded Cylindrical Waveguides and Cavities Using a New Four-Port Ring Network

August 31, 2012

Author(s)

Felipe Penaranda-foix, Michael D. Janezic, Jose M. Catala-Civera, Antoni J. Canos-Marin

In this paper, a full-wave method for the electromagnetic analysis of dielectric-loaded cylindrical and coaxial waveguides and cavities is developed. For this...

Improving Optical Measurement Uncertainty with Combined Multitool Metrology Using a Bayesian Approach

August 30, 2012

Author(s)

Nien F. Zhang, Richard M. Silver, Hui Zhou, Bryan M. Barnes

Recently, there has been significant research investigating new optical technologies for dimensional metrology of features 22 nm in critical dimension and...

Design, fabrication, and testing of a serial kinematic MEMS XY stage for multi-finger manipulation

August 29, 2012

Author(s)

Yong Sik Kim, Jae M. Yoo, Seung Ho Yang, Young M. Choi, Nicholas G. Dagalakis, Satyandra K. Gupta

In micro-electro-mechanical systems (MEMS) it is difficult to obtain large range of motion with small coupled error. This limitation was overcome by designing...

Exploring background variability of a low-level (quartz) gas proportional counter using pulse shape and distribution analysis

August 29, 2012

Author(s)

George A. Klouda, James J. Filliben

Low-level gas proportional counting presents special challenges to the measurement process. Generally, measurement systems for this purpose have unique signal...

Review: Biological Imaging Software Tools

August 29, 2012

Author(s)

Anne L. Plant, Kevin Eliceiri, Anne Carpenter

Few technologies are more widespread in modern biological laboratories than imaging by microscopy. Advancements in optical technologies and instrumentation over...

Modeling Extreme Bottom-Up Filling of Through Silicon Vias

August 29, 2012

Author(s)

Daniel Josell, Daniel Wheeler, Thomas P. Moffat

Extreme bottom-up superfilling of through silicon vias (TSV) was recently described wherein deposition occurs on the bottom surface of the vias with negligible...

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