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Journals

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 Turko, David 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...

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...

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...

Enthalpy change measurements of a mixed refrigerant in a microcryogenic cooler in steady and pulsating flow regimes

August 29, 2012

Author(s)

Ryan J. Lewis, Yunda Wang, Mu Hong Lin, Marcia L. Huber, Ray Radebaugh, Yung-Cheng Lee

Micro cryogenic coolers (MCCs) are useful to a number of small electronic devices which require low cooling power. The cooling power of MCCs operating with...

Probing coherence in microcavity frequency combs via optical pulse shaping

August 29, 2012

Author(s)

Fahmida Ferdous, Houxun H. Miao, Pei-Hsun Wang, Daniel E. Leaird, Kartik Srinivasan, Lei Chen, Vladimir Aksyuk, Andrew M. Weiner

Recent investigations of microcavity frequency combs based on cascaded four-wave mixing have revealed a link between the evolution of the optical spectrum and...

Simultaneuos Electrochemical and Mechanical Impendance Spectroscopy Using Cantilever Curvature

August 29, 2012

Author(s)

Manon C. Lafouresse, Ugo Bertocci, Carlos R. Beauchamp, Gery R. Stafford

Electrochemical impedance spectroscopy is applied to in-situ stress measurements of a gold cantilever electrode in 0.1 M HClO4 as a new technique for studying...

NIST/ISAC standardization study: variability in assignment of intensity values to fluorescence standard beads and in cross calibration of standard beads to hard dyed beads

August 28, 2012

Author(s)

Lili Wang

A procedure is described for assigning the number of equivalent reference fluorophores (ERF) values to microspheres labeled with a fluorophore designed to...

Error Modeling of Seebeck Coefficient Measurements Using Finite Element Analysis

August 28, 2012

Author(s)

Joshua B. Martin

Using finite element analysis, we have developed a metrology simulation to model errors in the measurement of the Seebeck coefficient. This physical parameter...

Quantifying the elasticity and viscosity of geometrically-confined polymer films via thermal wrinkling

August 28, 2012

Author(s)

Edwin P. Chan, Qinhuang Lin, Christopher M. Stafford

We apply thermal wrinkling, which is a surface instability that occurs during thermal annealing of polymer films geometrically confined by a rigid substrate and...

Experimental constraints on the polarizabilities of the 6s² 1S0 and 6s6p 3P0 states of Yb

August 28, 2012

Author(s)

Kyle P. Beloy

We utilize accurate experimental data available in the literature to yield bounds on the polarizabilities of the ground and first excited states of atomic Yb...

Nucleation products of ligated nanoclusters unaffected by temperature and reducing agent

August 27, 2012

Author(s)

John M. Pettibone, Nicole R. Reardon

Atomically uniform nucleation products of ligated metal nanoclusters are observed irrespective of reduction conditions for metal-bidentate ligand systems...

Protective roles of single-wall carbon nanotubes in ultrasonication-induced DNA base damage

August 27, 2012

Author(s)

Elijah J. Petersen, Xiaomin X. Tu, M Miral Dizdar, Ming Zheng, Bryant C. Nelson

Ultrasonication is a physical process known to generate abundant levels of oxygen-derived species such as hydroxyl radicals, hydrogen atoms, and hydrogen...

Noncontact measurement of charge carrier lifetime and mobility in GaN nanowires

August 27, 2012

Author(s)

Christopher M. Dodson, Patrick Parkinson, Kristine A. Bertness, Hannah J. Joyce, Laura M. Herz, Norman Sanford, Michael B. Johnston

The first noncontact photoconductivity measurements of gallium nitride nanowires (NWs) are presented, revealing a high crystallographic and optoelectronic...

Vertically Segregated Structure and Properties of small molecule-polymer blend semiconductors for organic thin film transistors

August 27, 2012

Author(s)

Nayool Shin, Dean DeLongchamp, Jihoon Kang, Regis J. Kline, Lee J. Richter, Vivek Prabhu, Balaji Purushothamanc, John E. Anthony, Do Y. Yoon

The phase-segregated structure and the electrical properties of thin film blends of the small-molecule semiconductor fluorinated 5,11-bis(triethylsilylethynyl)...

Measuring Single-Walled Carbon Nanotube Length Distributions from Diffusional Trajectories

August 27, 2012

Author(s)

Jason Streit, Sergei M. Bachilo, Anton V. Naumov, Constantine Y. Khripin, Ming Zheng, R B. Weisman

A new method is demonstrated for measuring the length distributions of dispersed single-walled carbon nanotube (SWCNT) samples by analyzing diffusional motions...

Radio-microanalytical particle measurements method and application to Fukushima aerosols collected in Japan

August 26, 2012

Author(s)

Cynthia J. Zeissler, Lawrence Forsley, Richard M. Lindstrom, Sean Newsome, Adrean Kirk, P.A. Mosier-Boss

A nondestructive analytical method based on autoradiography and gamma spectrometry was developed to perform activity distribution analysis for particulate...

Coherent Diabatic Ion Transport and Separation in a Multizone Trap Array

August 24, 2012

Author(s)

Ryan S. Bowler, John P. Gaebler, Yiheng Lin, Ting Rei Tan, David Hanneke, John D. Jost, J. Home, Dietrich G. Leibfried, David J. Wineland

We investigate ion motion dynamics during the transport between and separation into spatially distinct trap locations in a multi-zone trap array. We laser-cool...

Accurate and Precise Calibration of AFM Cantilever Spring Constants using Laser Doppler Vibrometry

August 24, 2012

Author(s)

Richard S. Gates, Jon R. Pratt

Accurate cantilever spring constants are important in atomic force microscopy in both control of sensitive imaging and to provide correct nanomechanical...

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