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.
A broad range of programs at the National Institute of Standards and Technology address critical metrology and characterization challenges facing the...
Heather J. Patrick, Thomas A. Germer, Yifu Ding, Hyun Wook Ro, Lee J. Richter, Christopher L. Soles
Thermal embossing nanoimprint lithography (NIL) is an area of continuing interest because it allows direct patterning of nanoscale structures into a wide...
Christopher L. Holloway, John M. Ladbury, Richard Ziolkowski, Peng Jin, Chia-Ching Lin
The paper discusses the analysis and measurements of electrical small antennas. The antennas discussed here are based on antenna designed from metamaterial...
The development of accurate metrology for the characterization of nanomaterials is one barrier to innovation confronting all phases of nanotechnology. Ultra...
Data from two full-scale residential smoke alarm fire test series was analyzed to estimate the performance of dual sensor photoelectric/ionization alarms as...
A series of 24 full-scale experiments was conducted during the summer of 2008 to examine the effects of alarm type (photoelectric, ionization, and dual sensor)...
Shuhui Kang, Vivek Prabhu, Wen-Li Wu, Eric K. Lin, Kwang-Woo Choi, Manish Chandhok, Todd Younkin, Wang Yueh
The photoacid diffusion length is a critical issue for EUV photoresists and photolithography because it governs critical dimension (CD), line-edge-roughness...
Maritoni A. Litorja, Steven W. Brown, Yoshihiro Ohno, Chungsan Lin
The requirements for diagnostic and surgical lighting have remained largely unchanged over the past several years illumination level, glare, shadow and tissue...
Metallic nanoparticle aggregates coupling strong surface plasmons with a Raman reporter molecule have been developed for application in multiplexed optical...
Digital product engineering information comes from a variety of applications ranging from computer-aided design, engineering, and manufacturing software to...
The demand for gaseous hydrogen fuel is expected to necessitate a consistent supply of hydrogen that can only be delivered through networks of existing and new...
This paper describes the integration of IEEE 1451 smart transducers and Open Geospatial Consortium -Sensor Web Enablement (OGC-SWE) using the Smart Transducer...
Adam J. Nolte, Jun Y. Chung, Marlon L. Walker, Christopher M. Stafford
Adhesion between materials is often governed by the ambient environment, which can mediate or change the types of molecular interactions present at an interface...
Relaxation processes in viscous liquids and glasses have been studied extensively, but the underlying causes of glassy behavior in polymeric systems remains as...
Nature (e.g. geckos and insects) has illustrated that a patterned surface can effectively tailor the adhesion of an interface. Inspired by the amazing...
Jessica M. Torres, Christopher Stafford, Bryan D. Vogt
In this work, we will employ this wrinkling metrology to extract the modulus of polymer thin films for a homologous series of poly(n-alkyl methacrylate)s. In...
Molecular electronic devices with spin-dependent tunneling (SDT) transport behavior offer an innovative and extremely enticing direction towards spin...
Hermann Uys, Michael J. Biercuk, Aaron Vandevender, N. Shiga, Wayne M. Itano, John J. Bollinger
We present a study of dynamical decoupling schemes for the suppression of phase erros due to various noise environments using ions in a Penning ion trap as a...
Nathan R. Newbury, Ian R. Coddington, Tasshi Dennis, William C. Swann, Paul A. Williams
The coherent and broad spectral output of fiber-laser frequency combs can be exploited for a variety of high-resolution measurements outside of conventional...
Esther Baumann, Fabrizio R. Giorgetta, Jeffrey W. Nicholson, William C. Swann, Ian R. Coddington, Nathan R. Newbury
We present a frequency comb based on an all-fiber polarization-maintaining figure-8 laser. It is locked to an optical reference through an intracavity high...
Assessing the fluid-to-solid transition in cementitious systems at early-ages is crucial for scheduling construction operations, determining when laboratory...
Kotikalapudi Sriram, Oliver Borchert, Patrick Gleichmann, Douglas C. Montgomery
We present an evaluation methodology for comparison of existing and proposed new algorithms for Border Gateway Protocol (BGP) anomaly detection and robustness...
Fusion-bonded epoxy is used extensively for increasing the service life of steel-reinforced concrete structures. However, field observations have reported...
In large-scale grid systems with decentralized control, the interactions of many service providers and consumers will likely lead to emergent global system...
David L. Urban, Gary A. Ruff, Thomas Cleary, Jiann Yang, George Mulholland, Zeng-guang Yuan
Smoke particle size measurements were obtained under low-gravity conditions by overheating several materials typical of those found in spacecraft. The...
Geraldine S. Cheok, Kamel S. Saidi, Marek Franaszek
The ASTM E57.02 Test Methods Subcommittee is developing a test method to evaluate the ranging performance of a 3D imaging system. The test method will involve...
Steven D. Phillips, Craig M. Shakarji, Michael Krystek, K Summerhays
This paper discusses the concept of metrological traceability to the SI unit of length, the meter. We describe how metrological traceability is realized, give a...