NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
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.
In recent years photonic devices have emerged as a powerful tool for developing novel, high-sensitivity sensors. In particular, tremendous progress has been
Jeffrey W. Lynn, Xiuquan Zhou, Christopher K. H. Borg, Shanta R. Saha, Johnpierre Paglione, Efrain E. Rodriguez
Neutron diffraction and small angle scattering experiments have been carried out on the double-isotopic polycrystalline sample ( 7Li 0.82Fe 0.18OD)FeSe. Profile
Ronnie R. Fesperman Jr., Shawn P. Moylan, Gregory W. Vogl, M A. Donmez
Standards communities are actively working to establish robust machining and measurement tests used to evaluate the machining performance of 5-axis machining
Yong Sik Kim, Yang Seung Ho, KwangWoong Yang, Nicholas Dagalakis
In this study, a MEMS-based vision tracking system is developed based on micro fiducial markers. The vision tracking system recognizes the predetermined
Keith Gilmore, John Vinson, Eric L. Shirley, David Prendergast, Chaitanya D. Pemmaraju, Josh J. Kas, John J. Rehr, Fernando D. Vila
We present an efficient implementation of the Bethe-Salpeter equation (BSE) method for obtaining core-level spectra including x-ray absorption (XAS), x-ray
S. Banerjee, Rei Tangko, David Sheen, Hai Wang, Craig T. Bowman
N-dodecane (n-C12H26) is a straight chain alkane that forms an important constituent of surrogate blends for common aviation fuels such as JP8 and Jet-A. The
Fan Zhang, Ivan Javni, Olivera Bili?, Nikola Bili? , Zoran S. Petrovic, Jan Ilavsky
Isosorbide, a renewable diol derived from starch, was used in combination with butane diol or alone as the chain extender in two series of thermoplastic
Gold electrodeposition was studied in a sulfite electrolyte to which micromolar concentrations of Tl2SO4 were added. Hysteresis and a regime of negative
Aaron C. Johnston-Peck, Matteo Cargnello, Benjamin T. Diroll, Eric Wong, Bianca Datta, Divij Damodar, Vicky V. Doan-Nguyen, Andrew A. Herzing, Cherie R. Kagan, Christopher B. Murray
Steven M. Disseler, Xuan Luo, Bin Gao, Yoon Seok Oh, Rongwei Hu, Yazhong Wang, Dylan Quintana, Alexander Zhang, Qingzhen Huang, June W. Lau, Rick L. Paul, Jeffrey W. Lynn, Sang-Wook Cheong, William D. Ratcliff
The hexagonal phase of LuFeO 3 is a rare example of a multiferroic material possessing a weak ferromagnetic moment, which is predicted to be switchable by an
Oliver T. Slattery, Paulina S. Kuo, Lijun Ma, Xiao Tang
Quantum repeaters require entangled photon pair sources to connect flying qubits in the telecommunication band and stationary qubits at atomic transition
Tyler B. Martin, Katrina Irene S. Mongcopa, Rana N. Ashkar, Paul Butler, Ramanan Krishnamoorti, Arthi Jayaraman
Simulations and experiments are conducted on polymer mixtures (or blends) containing polymer grafted nanoparticles in a chemically distinct polymer matrix
Diluvian clustering is an unsupervised grid-based clustering algorithm well suited to interpreting large sets of noisy compositional data. The algorithm is
This paper presents a comparative study of six methods for the retrieval and classification of tex- tured 3D models, which have been selected as represen-
Despite the fundamental role adsorbed solvent layers play in generating critical Casimir forces between colloidal particles, the structure of these layers has
Joseph W. Fowler, Bradley K. Alpert, William B. Doriese, Young Il Joe, Galen C. O'Neil, Cherno Jaye, Joel N. Ullom, Daniel A. Fischer, Daniel S. Swetz
Transition edge sensor microcalorimeters can measure x-ray and gamma-ray energies with very high energy resolution and high photon-collection efficiency. For
Brian S. Dennis, David Czaplewski, Michael Haftel, Daniel Lopez, Girsh Blumberg, Vladimir Aksyuk
Passive optical elements can play key roles in photonic applications such as plasmonic integrated circuits. Here we experimentally demonstrate passive gap
Kaya Wei, Laura Beauchemin, Hsin Wang, Joshua Martin, George S. Nolas
Gallium doped Cu2ZnSnSe4 quaternary chalcogenides with and without excess Cu have been synthesized by elemental reaction and densified using hot pressing in
Frank Heinrich, Srinivas Chakravarthy, Hirsh Nanda, Antonella Papa, Pier Paolo Pandolfi, Alonzo H. Ross, Rakesh K. Harishchandra, Arne Gericke, Peter M. Loesche
The PTEN tumor suppressor exerts phosphatase activity on PI(3,4,5)P 3 in the plasma membrane and was recently reported to dimerize in cell models. Here we show
John D. Teufel, Florent Q. Lecocq, Raymond W. Simmonds
We measure the fundamental noise processes associated with a continuous linear position measurement of a micromechanical membrane incorporated in a microwave
Dustin G. Poppendieck, Lisa C. Ng, Andrew K. Persily, Al Hodgson
The National Institute of Standards and Technology (NIST) constructed a Net Zero Energy Residential Test Facility (NZERTF) to support the development and
Although the scaling theory of polymer solutions has had many successes, this type of argument is deficient when applied to hydrodynamic solution properties
In the pulse-driven ac Josephson voltage standard, the low frequency component of the drive signal increases the system complexity and induces unwanted voltages
Michael J. A. Hore, Xingchen Ye, Jamie Ford, Yuzhi Gao, Jiayang Fei, Qiong Wu, Stuart J. Rowan, Russell J. Composto, Christopher B. Murray, Boualem Hammouda
The structure and size of ligands attached to the surfaces of gold nanorods, such as adsorbed surfactants or grafted polymers, are important considerations that
Jirun Sun, Stephanie S. Watson, David Allsopp, Deborah Jacobs, Drago Skrtic
Unique photo-catalytic activities (PCAs) of titanium dioxide nanoparticles (TiO2 NPs) made them attractive in many potential applications for medical devices
Luis Fernando Vargas Lara, Jack F. Douglas, Samuel M. Stavis, Elizabeth A. Strychalski, Jon C. Geist, Brian J. Nablo
There has been much recent interest in the dimensional properties of duplex DNA under nanoscale confinement conditions as a problem of fundamental interest in
Weston L. Tew, Samuel P. Benz, Horst Rogalla, Alessio Pollarolo, David R. White, Jifeng Qu, Kunli Zhou
The unit of thermodynamic temperature, the kelvin, will be redefined in 2018 by fixing the value of the Boltzmann constant, k. The present CODATA recommended
Patrick F. Egan, Jack A. Stone Jr., Jay H. Hendricks, Jacob E. Ricker, Gregory E. Scace, Gregory F. Strouse
We have built and characterized a refractometer that utilizes two Fabry-Perot cavities formed on a dimensionally stable spacer. In the typical mode of operation
Laura C. Sinclair, Jean-Daniel Deschenes, Lindsay I. Sonderhouse, William C. Swann, Isaac H. Khader, Esther Baumann, Nathan R. Newbury, Ian R. Coddington
We describe design and operation of a robust self-referenced, optically coherent frequency comb. The system robustness is derived from a combination of an