An official website of the United States government
Here’s how you know
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.
Daniel M. Madrzykowski, Sunil Kumar, Prabodh Panindre
In December 1998, three New York City firefighters were making their way along a corridor to reach a burning apartment on the top floor of a Brooklyn building...
Local oxidation of metal, semiconductor, and polymer surfaces has provided a common basis from which to explore fundamental principles of nanolithography and...
Limin Sun, Laurence C. Chow, Stanislav A. Frukhtbeyn, John E. Bonevich
This study aimed at preparing and studying the properties of nanoparticles of calcium phosphate (nCaP) with Ca/P ratios ranging from 1.0 to 1.67 using a spray...
Katherine E. Sharpless, Richard M. Lindstrom, Bryant C. Nelson, Karen W. Phinney, Catherine A. Rimmer, Lane C. Sander, Michele M. Schantz, Rabia Oflaz, Jeanice M. Brown Thomas, Gregory C. Turk, Stephen A. Wise, Laura J. Wood, James H. Yen
Standard Reference Material (SRM) 1849 Infant/Adult Nutritional Formula has been issued by the National Institute of Standards and Technology (NIST) as a...
We describe the construction and performance of a passive, real-time terahertz camera based on a modular, 64-element linear array of cryogenic hotspot...
Milani S. Sumanasooriya, Dale P. Bentz, Narayanan Neithalath
Transport properties of porous materials such as pervious concretes are inherently dependent on a variety of pore structure features. Empirical equations are...
Kaushik Chatterjee, Sheng Lin-Gibson, William E. Wallace, Marian F. Young, Carl Simon Jr.
A combinatorial library approach was used to demonstrate that hydrogel scaffold modulus can enhance osteoblast differentiation driving formation of a 3-D graded...
Keith A. Gillis, Daniel K. Havey, Joseph T. Hodges
We model and measure the absolute response of an intensity-modulated photoacoustic spectrometer comprising a 10 cm long resonator and having a Q-factor of...
This paper investigates the capabilities of the Bag-of-Words (BW) method in the 3D shape retrieval field. The contributions of this paper are: 1) the 3D shape...
Daniel Wheeler, James A. Warren, William J. Boettinger
Recent experimental studies of molten metal droplets wetting and spreading on high temperature reactive substrates have established that the majority of triple...
A model of hydride formation and dissolution has been proposed for a single spherical nano-particle and for a colletion of such particles with a given size...
Luer adapters are convenient tools to rapidly and reversibly connect tubing from fluid reservoirs to microfluidic devices. One problem associated with the use...
Microwave double resonances were measured is a wall-coated Rb vapor cell as a function of additional buffer gas pressure. These data were compared to similar...
We combine accurate ab initio calculations of the second and third density virial coefficients, B(T) and C(T), of 4He with measurements of its pressure-density...
Michaela Kuepferling, Claudio Serpico, Matthew Pufall, William Rippard, Thomas Mitchell (Mitch) Wallis, Atif A. Imtiaz, Pavel Kabos
The field dependence of vortex oscillations in a spin-transfer metallic nanocontact, subject to in-plane, spatially uniform, external fields, is studied by...
Brent A. Sperling, William A. Kimes, James E. Maslar, Pamela M. Chu
In this work, we develop a Fourier transform infrared spectroscopy-based method to measure the gas-phase dynamics occurring during atomic layer deposition of...
The ability to force immiscible polymers into specific, targeted structures would enable the generation of blends with tailored performance by exploiting the...
Yvonne B. Gerbig, Stephan J. Stranick, Robert F. Cook
The residual stress field around spherical indentations on single crystal silicon (Si) of different crystallographic orientation is mapped by confocal Raman...
A quantum state is called concordant if it has zero quantum discord with respect to any part. By extension, a concordant computation is one such that the state...
Many of the current investigations on the environmental health and human safety risks of engineered nanomaterials focus on their short-term acute effects...
James V. Porto, Anders Sorensen, Ehud Altman, Michael Gullans, Mikhail Lukin, Eugene Demler
We analyze a technique for the preparation of low entropy many-body states of atoms in optical lattices based on adiabatic passage. In particular, we show that...
Kar T. Tan, Christopher C. White, Donald L. Hunston
Adhesion of spray-applied fire-resistive materials (SFRMs) to steel structures is critical in enabling the capacity of a building to remain functional for a...
Catherine A. Remley, Sander Floris, Christopher L. Holloway
We discuss practical measurement implementation issues regarding the use of a vector signal analyzer for making bit-error-rate measurements in reverberation...
Helge Fielitz, Kate Remley, Christopher L. Holloway, Qian Zhang, Qiong Wu, David W. Matolak
We introduce a test environment to replicate the well-known clustering of reflections in power delay profiles from urban wireless propagation environments that...
Elisabeth Mansfield, Aparna Kar, Stephanie A. Hooker
A new method for analyzing the chemical purity and consistency of microscale samples is described using a quartz crystal microbalance (QCM) sensor platform. The...
Oxidatively induced DNA damage occurs in living organisms by endogenous and exogenous sources, and is implicated in a variety of disease processes including...
Zhigang Li, Ping-Shine Shaw, Uwe Arp, Charles E. Gibson, Howard W. Yoon, Keith R. Lykke
In 2004, the National Institute of Standards and Technology (NIST) established the ultraviolet (UV) spectral irradiance scale from 200 nm to 400 nm using the...
This paper proposes a measure for assessing the degree of equivalence between the two laboratories in a key comparison. The measure is called asymmetric degree...
Francesca M. Tavazza, Lyle E. Levine, Anne M. Chaka
Under tensile deformation, Au nanowires (NWs) elongate to form single atom chains via a series of intermediate structural transformations. These intermediate...