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Journals

Near-field microwave microscope measurements to characterize bulk material properties

June 12, 2007

Author(s)

Atif A. Imtiaz, Thomas Baldwin, Hans T. Nembach, Thomas M. Wallis, Pavel Kabos

We measured bulk dielectric (Fused Silica), semiconductor (Silicon) and metal (Copper), with a Near-field Scanning Microwave Microscope (NSMM). We use three...

Margin Failures in Crown-Like Brittle Structures: Off-Axis Loading

June 11, 2007

Author(s)

Chris Ford, T Qasim, M T. Bush, X Z. Hu, Mahek Shah, Vibhu Saxena, Brian R. Lawn

The effect of off-axis loading of compliant indenters on the initiation of cracks at the margins of dental crown-like dome structures consisting of glass shells...

Relative Volatilities of Ionic Liquids by Vacuum Distillation of Ionic Liquid Mixtures

June 7, 2007

Author(s)

Jason A. Widegren, Yi-ming Wang, Wesley A. Henderson, Joe W. Magee

The relative volatilities of a variety of common, aprotic ionic liquids have been determined for the first time. Equimolar mixtures of ionic liquids were vacuum...

Teaching Materials Science to Children, Ages 8-14

June 7, 2007

Author(s)

Robert D. Shull

A pre-high school science program, Adventure In Science (AIS), has been running in the Gaithersburg, Maryland area for the past 33 years. It s President, Dr...

The Influence of Temperature on the Magnetic Behavior of Collodial Cobalt Nanoparticles

June 7, 2007

Author(s)

Cindi L. Dennis, Brian B. Maranville, Angela R. Hight Walker, Robert D. Shull

A Combinatorial Testing Strategy for Concurrent Programs

June 7, 2007

Author(s)

Yu Lei, Richard Carver, Raghu N. Kacker, David Kung

One approach to testing concurrent programs is called reachability testing, which derives test sequences automatically and on-the-fly, without constructing a...

Application of the CIPM MRA to Radionuclide Metrology

June 6, 2007

Author(s)

Lisa R. Karam

The adoption of the Mutual Recognition Arrangement by the CIPM in 1996 had an almost immediate affect on the approach national measurement laboratories took in...

A W-band polarization converter and isolator

June 6, 2007

Author(s)

Charles Dietlein, A. Luukanen, Zoya Popovic, Erich N. Grossman

This paper presents a 95-GHz printed low-loss linear-to-circular polarizer designed as a component of an active direct-detection millimeter-wave imaging system...

Origin of differing reactivities of aliphatic chains on H-Si(111) and oxide surfaces with metal

June 5, 2007

Author(s)

Christina Hacker, Curt A. Richter, Nadine Gergel-Hackett, Lee J. Richter

The interaction of deposited metals with monolayer films is critical to the understanding of, and ultimate utility of, the emerging arena of molecular...

Precision Measurements using a 300 mV Josephson Arbitrary Waveform Synthesizer

June 4, 2007

Author(s)

Samuel P. Benz, Paul D. Dresselhaus, Charles J. Burroughs, Norman F. Bergren

We have developed a Josephson Digital-to-Analog Converter, otherwise know as a Josephson Arbitrary Waveform Synthesizer, with 300 mV peak output voltage. This...

Design of SNS Josephson Arrays for High Voltage Applications

June 4, 2007

Author(s)

Paul Dresselhaus, Samuel Benz, Charles J. Burroughs, Norman F. Bergren, Yonuk Chong

The voltage from a single, microwave-biased Josephson junction is a small quantity; thus useful voltages are only generated through series arrays of many...

Optical and structural study of GaN nanowires grown by catalyst-free MBE. I. Near-band-edge luminescence and strain effects

June 4, 2007

Author(s)

Larry Robins, Kristine A. Bertness, Joy Barker, Norman Sanford, John B. Schlager

GaN nanowires with diameters of 50-250 nm, grown by catalyst-free molecular beam epitaxy, were characterized by photoluminescence (PL) and cathodoluminescence...

Optical and structural study of GaN nanowires grown by catalyst-free molecular beam epitaxy. II. Sub-band-gap luminescence and electron irradiation effects

June 4, 2007

Author(s)

Larry Robins, Kristine A. Bertness, Joy Barker, Norman Sanford, John B. Schlager

GaN nanowires with diameters of 50-250nm, grown by catalyst-free molecular beam epitaxy, were characterized by photoluminescence (PL) and cathodoluminescence...

Effects of Ozonolysis and Subsequent Growth of Quantum Dots on the Electrical Properties of Freestanding Single-walled Carbon Nanotube Films

June 2, 2007

Author(s)

Lucile C. Teague, Sarbajit Banerjee, Stanislaus S. Wong, Curt A. Richter, Bindhu Varughese, James D. Batteas

Effects of Ozonolysis and Subsequent Growth of Quantum Dots on the Electrical Properties of Freestanding Single-walled Carbon Nanotube Films

June 2, 2007

Author(s)

L C. Teague, S Banerjee, S S. Wong, Curt A. Richter, Bindhu Varughese, J Batteas

A significant challenge exists in probing the transport behavior of chemically modified single- walled carbon nanotubes (SWNTs). Thin films of SWNTs offer one...

Optical and Structural Study of GaN Nanowires Grown by Catalyst Free MBE: (I) Near Band Edge Luminescence and Strain Effects

June 1, 2007

Author(s)

Lawrence H. Robins, Kristine A. Bertness, John G. Barker, Norman A. Sanford, John B. Schlager

GaN nanowires with diameters of 50 nm to 250 nm, grown by catalyst free molecular beam epitaxy, were characterized by photoluminescence (PL) and...

Morphology, structure, and nucleation of out-of-phase boundaries (OPBs) in epitaxial films of layered oxides

June 1, 2007

Author(s)

M A. Zurbuchen, J Lettieri, Y Jia, A H. Carim, S K. Streiffer, D G. Schlom

Optical and Structural Study of GaN Nanowires Grown by Catalyst-Free MBE: (II) Defect-Related Luminescence and Electron-Beam Irradiation Effects

June 1, 2007

Author(s)

Lawrence H. Robins, Kristine A. Bertness, John G. Barker, Norman A. Sanford, John B. Schlager

GaN nanowires grown by catalyst free molecular beam epitaxy were characterized by photoluminescence (PL) and cathodoluminescence (CL) spectroscopy at...

Morphology, Structure, and Nucleation of Out-of-phase Boundaries (OPBs) in Epitaxial Films of Layered Complex Oxides

June 1, 2007

Author(s)

M A. Zurbuchen, J Lettieri, W Tian, Y Jia, G Asayama, S J. Fulk, D J. Comstock, S Knapp, A H. Carim, D G. Schlom, X Q. Pan, S K. Streiffer

Edge chipping of brittle materials: effect of side-wall inclination and loading angle

June 1, 2007

Author(s)

Herzl Chai, Brian R. Lawn

Observation of the ¹S₀-³P₀ clock transition in ²⁷Al⁺

June 1, 2007

Author(s)

Till P. Rosenband, P. O. Schmidt, David Hume, Wayne M. Itano, Tara M. Fortier, Jason Stalnaker, Scott A. Diddams, Jeroen Koelemeij, James C. Bergquist, David J. Wineland

We report for the first time, laser spectroscopy of the 1S 0 – 3P 0 clock transition in 27Al +. A single aluminum ion and a single beryllium ion are...

Connecting the Dots

June 1, 2007

Author(s)

Stephen D. Quinn

Establishing traceability from high-level Federal Information Security Management Act (FISMA) requirements to specific mechanisms to secure hardware and...

Cone Calorimeter Analysis of UL-94 V-Rated Plastics

June 1, 2007

Author(s)

A B. Morgan, Matthew F. Bundy

Cone calorimeter analysis was conducted on 18 thermoplastics with different UL-94 vertical burn test (V) ratings. Ratings varied from V-0 to no rating (NR), and...

Improved Certified Values for Total Mercury and Speciated Mercury in NIST SRMs Using Isotope Dilution ICP-MS

June 1, 2007

Author(s)

Stephen E. Long, William C. Davis, Russell D. Day, Steven J. Christopher, Jacqueline L. Mann, William R. Kelly

Recent improvements in total mercury and mercury speciation measurement capabilities at the National Institute of Standards and Technology have resulted in...

The Recovery of Elastic Properties at 35 C in Trip 700 Steel Following Deformation

June 1, 2007

Author(s)

David J. Pitchure, Richard E. Ricker

The influence of plastic deformation on the elastic properties that determine the magnitude of springback following forming was investigated using dynamic...

Understanding Failure Response in Service Discovery Systems

June 1, 2007

Author(s)

Christopher E. Dabrowski, Kevin L. Mills, Stephen Quirolgico

Spotlighting NIST Standard Reference Materials - New Standard Reference Material (SRM) 2585 Organic Contaminants in House Dust to Support Exposure Assessment Measurements

June 1, 2007

Author(s)

Michele M. Schantz, Jennifer M. Lynch, John R. Kucklick, Dianne L. Poster, H M. Stapleton, S S. Vander Pol, Stephen A. Wise

House dust originates from both internal and external sources and has been identified as one of the primary sources of lead exposure for children (http://www...

Computational Models of the Nano Probe Tip for Static Behaviors

June 1, 2007

Author(s)

Shaw C. Feng, Theodore V. Vorburger, Che B. Joung, Li Ma

As integrated circuits become smaller and faster, the measurement of line width must have less uncertainty and more versatility. The common requirement for...

Anomalous Behavior of Teflon-Based Helium Permeation Flow Standards

June 1, 2007

Author(s)

Patrick J. Abbott, Justin H. Chow

Helium leak testing is a vital step in assuring product reliability for anything that must be packaged in a sealed container. Examples abound from blister...

Coarse-Grained Strategy for Modeling Protein Stability in Concentrated Solutions III: Directional Protein Interactions

June 1, 2007

Author(s)

Jason K. Cheung, Vincent K. Shen, Jeffrey R. Errington, Thomas M. Truskett

We introduce an extension to the coarse-grained modeling strategy described in parts I and II of this investigation to account for the possibility of non...

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