Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Journals

Methodological considerations for testing the ecotoxicity of carbon nanotubes and fullerenes: Review

October 12, 2011

Author(s)

Elijah J. Petersen, Theodore B. Henry

The recent emergence of manufactured nanoparticles (NPs) as materials that can be released into the environment and lead to exposure in organisms has...

The new and improved NIST Dragons LAIR (Lofting and Ignition Research) Facility: Coupling the Reduced Scale Continuous Feed Firebrand Generator to Bench Scale Wind Tunnel

October 12, 2011

Author(s)

Samuel L. Manzello, Sayaka S. Suzuki

The present investigation was undertaken to construct a new and improved Dragons LAIR facility. This entailed removing the NIST Baby Dragon from the wind...

Synthesis of Polymer-derived Ceramic Si(B)CN-Carbon Nanotube Composite by Microwave Induced Interfacial Polarization

October 12, 2011

Author(s)

Romil Bhandavat, William Kuhn, Elisabeth Mansfield, John H. Lehman, Gurpreet Singh

We demonstrate synthesis of a polymer-derived ceramic (PDC)-multiwall carbon nanotube (MWCNT) composite using microwave irradiation at 2.45 GHz. The process...

Ten years of computer forensic tool testing

October 12, 2011

Author(s)

James R. Lyle, Barbara Guttman, Richard Ayers

The Computer Forensic Tool Testing (CFTT) project at the National Institute of Standards and Technology (NIST) has been active since 2000. The project develops...

Re-visiting the Balazs Thought Experiment in the Presence of Loss: Electromagnetic-Pulse-Induced Displacement of a Positive-Index Slab having Arbitrary Complex Permittivity and Permeability

October 12, 2011

Author(s)

Kenneth J. Chau, Henri Lezec

Over a half-century ago, Balazs proposed a thought experiment to deduce the form of electromagnetic momentum in a transparent and loss- less slab by imposing...

Mathematical Model Formulation and Validation of Water and Cryoprotective Agent Transport in Whole Hamster Pancreatic Islets

October 11, 2011

Author(s)

James D. Benson, Charles T. Benson, John K. Critser

A mathematical and conceptual model of water and solute transport for whole hamster pancreatic islets has been developed and experimentally validated...

Potential release pathways, environmental fate, and ecological risks of carbon nanotubes

October 11, 2011

Author(s)

Elijah J. Petersen, Andrew Whelton, Liwen Zhang, Qingguo Huang, Nasir M. Uddin, Nikolai Mattison, Denis O'Carroll, Theodore Henry, Tinh Nguyen, Richard D. Holbrook, Kai Chen

Carbon nanotubes are currently being used in a number of consumer products, and exponentially higher production masses and a broader range of applications are...

Mid-infrared upconversion spectroscopy based on a Yb:fiber frequency laser

October 11, 2011

Author(s)

Scott A. Diddams, Todd Johnson

We present a system for molecular spectroscopy using a mid-infrared broadband frequency comb source with near infrared detection. Difference frequency...

Morphological Changes Driven by Nanofibrous Scaffolds Induce Marrow Stromal Cell Osteogenesis

October 11, 2011

Author(s)

Carl G. Simon Jr., Kaushik Chatterjee, Christopher K. Tison, Girish Kumar, Patrick S. Pine, Marc L. Salit, Jennifer H. McDaniel, Marian F. Young

Cells are sensitive to tissue scaffold architecture and these cell-material interactions drive cell functions critical in tissue regeneration. Results presented...

Micro-scale measurement and modeling of stress in silicon surrounding a tungsten-filled through-silicon via

October 11, 2011

Author(s)

Ryan P. Koseski, William Alexander Osborn, Stephan J. Stranick, Frank W. DelRio, Mark D. Vaudin, Thuy Dao, Vance H. Adams, Robert F. Cook

The stress in silicon surrounding a tungsten-filled through-silicon via (TSV) is measured using confocal Raman microscopy line scans across the TSV both before...

Magnetic Field Tuning of Antiferromagnetic Yb₃Pt₄

October 11, 2011

Author(s)

L. S. Wu, Y. Janssen, C. Marques, M. C. Bennett, M. S. Kim, K. Park, Songxue Chi, Jeffrey W. Lynn, G. Lorusso, G. Biasiol, M.C. Aronson

We present measurements of the specific heat, magnetization, magnetocaloric effect and magnetic neutron diffraction carried out on single cyrstals of...

Determining Structure Vulnerabilities to Firebrand Showers in Wildland-Urban Interface (WUI) Fires

October 10, 2011

Author(s)

Samuel L. Manzello, Seul-Hyun Park, Sayaka S. Suzuki, John R. Shields, Yoshihiko Hayashi

Attempting to experimentally quantify the vulnerabilities of structures to ignition from firebrand showers has remained elusive. The coupling of a two unique...

High Speed Switching Characteristics of Pt/Ta2O5/Cu Memristive Switch

October 8, 2011

Author(s)

Pragya R. Shrestha, Adaku Ochia, Kin P. Cheung, Jason P. Campbell, Helmut Baumgart, Gary Harris

Accurate measurements of the transient details of switching a memristive switch are crucial to the elucidation of the switching mechanism. Such high-speed...

Affinity maturation of human CD4 by yeast surface display and crystal structure of a CD4HLA-DR1 complex

October 7, 2011

Author(s)

Lili Wang, Xin Xiang Wang, Y Li, Min Mo, Yiyuan Yi, Qian Wang, W Gao, Roy A. Mariuzza

Helper T cell activation generally requires the co-receptor CD4, which binds MHC class II molecules. A remarkable feature of the CD4MHC class II interaction is...

Controlled transport of superparamagnetic beads with spin-valves

October 7, 2011

Author(s)

Wendy R. Altman, John M. Moreland, Stephen E. Russek, Bruce W. Han, Victor M. Bright

Trapping, release, and transport of individual or ensembles of 2.8 υm superparamagnetic beads functionalized with streptavidin were demonstrated using an...

Coalescence of Single Photons Emitted by Disparate Single Photon Sources: The Example of InAs Quantum Dots and Parametric Down-Conversion Sources

October 5, 2011

Author(s)

Sergey V. Polyakov, Andreas Muller, Alexander E. Ling, Natalia B. Rutter, Edward B. Flagg, Edward Van Keuren, Alan L. Migdall, Glenn S. Solomon

In quantum mechanics, particles in identical states are indistinguishable, giving rise to effects with no classical analog. Single photons produced by...

Effect of Moisture on Copolymer Fibers based on 5-amino-2-(p-aminophenyl)-benzimidazole

October 4, 2011

Author(s)

Guillaume Messin, Stephanie S. Watson, Amanda L. Forster, John R. Sieber

In recent years, there has been concern in the soft body armor community that copolymer fibers based on 5-amino-2-(p-aminophenyl)-benzimidazole can release...

Predicting Human Behavior during Fires

October 4, 2011

Author(s)

Erica D. Kuligowski

Evacuation models, including engineering hand calculations and computational tools, are used to evaluate the level of safety provided by buildings during...

Solution Structure of Copper-seamed C-alkylpyrogallol[4]arene Nanocapsules with Varying Chain Lengths

October 4, 2011

Author(s)

Harshita Kumari, Steven R. Kline, Nathaniel J. Schuster, Jerry L. Atwood

Stability of copper-seamed C-alkylpyrogallol[4]arene hexamers with varying chail lenghts in solution has been studied using small-angle neutron scattering (SANS...

A Roadmap to Implementing Metal-Organic Frameworks in Electronic Devices: Challenges and Critical Directions

October 4, 2011

Author(s)

Mark Allendorf, Adam Schwartzberg, Vitalie Stavila, Albert A. Talin

Metal-organic frameworks (MOFs) and related material classes are attracting considerable attention for applications such as gas storage, separations, and...

SWIR calibration of spectralon reflectance factor

October 3, 2011

Author(s)

Catherine C. Cooksey, Georgi T. Georgiev, James J. Butler, Leibo Ding, Kurtis J. Thome

Satellite instruments operating in the reflective solar wavelength region require accurate and precise determination of the Bidirectional Reflectance Factor...

Exploring the Ellipsoidal and Core-Shell Geometries of Copper-Seamed C-alkylpyrogallol[4]arene Nanocapsules in Solution

October 3, 2011

Author(s)

Harshita Kumari, Steven R. Kline, Nathaniel J. Schuster, Charles L. Barnes, Jerry L. Atwood

Small-angle neutron scattering (SANS) studies were used to probe the stability and geometry of copper-seamed Calkylpyrogallol[ 4]arene (PgCnCu; n = 11, 13, 17)...

The Effect of Gravity on the Resolution of Small-Angle Neutron Diffraction Peaks

October 1, 2011

Author(s)

David F. Mildner, John G. Barker, Steven R. Kline

The resolution ellipses for neutron diffraction peaks at small vectors lie along lines that point to a position vertically above the beam center. This gravity...

High Frequency Characterization of Contact Resistance and Conductivity of Platinum Nanowires*

October 1, 2011

Author(s)

Kichul Kim, Paul Rice, Thomas M. Wallis, Dazhen Gu, SangHyun S. Lim, Atif A. Imtiaz, Pavel Kabos, Dejan Filipovic

Abstract Individual platinum (Pt) nanowires (NWs) with 100 nm and 250 nm diameters, embedded in coplanar waveguide (CPW) structures are investigated. Three...

The Evolution of Time Measurement, Part 2 - Quartz Clocks

September 30, 2011

Author(s)

Michael Lombardi

A historical article about the origins and the development of quartz clocks and oscillators (Part II of a IV-part series). It describes the discovery of...

Simulation approaches for studying the conductance behavior of gold nanowires during tensile deformation.

September 30, 2011

Author(s)

Francesca M. Tavazza, Lyle E. Levine, Anne M. Chaka

Under tensile deformation, gold nanowires thin progressively through a series of metastable ordered structures down to a single atom chain. The conductance of...

Compressed-Liquid Density Measurements of Methyl Oleate and Methyl Linoleate

September 30, 2011

Author(s)

Stephanie L. Outcalt

Compressed liquid densities of the fatty acid methyl esters methyl linoleate and methyl oleate have been measured with a vibrating-tube densimeter. The...

A synchrotron beamline for extreme-ultraviolet photoresist testing

September 30, 2011

Author(s)

Charles S. Tarrio, Steven E. Grantham, Shannon B. Hill, Nadir S. Faradzhev, Lee J. Richter, Chester Knurek, Thomas B. Lucatorto

Before being used in an extreme-ultraviolet (EUV) scanner, photoresists must first be evaluated for sensitivity and tested to ensure that they will not...

Decoherence, Autler-Townes effect, and dark states in two-tone driving of a three-level superconducting system

September 30, 2011

Author(s)

Jian Li, G.S. Paraoanu, Katarina Cicak, Fabio Altomare, Jae Park, Raymond Simmonds, Mika A. Sillanpaa, Pertti Hakonen

We present a detailed theoretical and experimental study of a multi-level quantum system coupled to two radiation ¯elds and subject to decoherence. We...

Far-field superfocusing with optical fiber based surface plasmonic lens made of nanoscale concentric annular slits

September 30, 2011

Author(s)

Yuxiang Liu, Hua Xu, Felix Stief, Nikolai Zhitenev, Miao Yu

We present experimental demonstration of three-dimensional superfocusing by using an optical fiber based surface plasmonic (SP) lens with nanoscale concentric...

Was this page helpful?