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.
Block copolymers offer an appealing alternative to current lithographic techniques with re- gard to fabrication of next generation microprocessors. However, if...
Dong H. Rim, Andrew K. Persily, Lance L. Wallace, William S. Dols, Steven J. Emmerich
Airborne particle transport into buildings is important for human exposure to particles and associated health effects. The present study investigated the entry...
Electrical Discharge Machining (EDM) is a manufacturing process whereby a desired shape is obtained through electrical discharges between an electrode and a...
Abhishek Motayed, Sergiy Krylyuk, Dipak Paramanik, Matt N. King, Jong Yoon Ha, Albert Davydov, John E. Bonevich
We present large-area, vertically-aligned GaN core-shell structures on silicon substrates. The GaN cores were formed by inductively coupled plasma etching of...
The principal objective of this work was to develop and demonstrate a new methodology for silver nanoparticle (AgNP) detection and characterization based on...
Traditional economic growth mechanisms are critiqued to demonstrate long-term inadequacies for addressing the the technological and global competitive...
When a Ne:O2 mixture is codeposited at 4.3 K with a Ne:H2 mixture that has been passed through a microwave discharge, the infrared spectrum of the resulting...
Yihua Y. Liu, Dincer Gokcen, Ugo Bertocci, Thomas P. Moffat
A self-terminating rapid electrodeposition process for controlled growth of Pt monolayer films from a K_(2)PtCl_(4)-NaCl electrolyte has been developed that is...
Matthijs Mentink, John E. Bonevich, Marc Dhalle, Daniel Dietderich, Arno Godeke, Frances Hellman, Herman Ten Kate
Binary Nb-Sn thin film samples are fabricated and characterized in terms of their composition, morphology and superconducting properties. Nb-Sn is magnetron...
Jason Gray, Kristine A. Bertness, Norman Sanford, Charles T. Rogers
We report on the low-frequency 1/f (flicker) parameter noise displayed by the resonance frequency and resistance of doubly clamped c-axis gallium nitride...
Jessica L. Staymates, Matthew Staymates, John Gillen
Precision micro-dispensing is a growing technique that has many applications in the scientific and additive manufacturing communities. Piezoelectric inkjet...
Joseph E. Reiner, Joseph W. Robertson, Arvind Balijepalli, Daniel L. Burden, Bryon S. Drown, John J. Kasianowicz
The ability to electronically detect and characterize individual polynucleotides as they are driven through a single protein ion channel may eventually prove...
Yoshihiro Nakashima, Michael A. Boss, Stephen E. Russek, John M. Moreland
We have developed a nuclear magnetic resonance (NMR) microcapillary probe for the detection of single magnetic microbeads. The geometry of the probe has been...
Edwin J. Heilweil, Ryan Compton, Helen K. Gerardi, Daniel Weidinger, Douglas J. Brown, Walter J. Dressick, Jeffrey C. Owrutsky
The RuII cyclometalated dye complex, cis-Ru(bpy)2(N3)2 (where bpy = 2,2-bipyridine), along with two more familiar analogs with pseudohalide (PS) ligands, cis...
Brian D. Cloteaux, Michael D. LaMar, Elizabeth R. Moseman, James Shook
A digraph whose degree sequences have a unique vertex labeled realization is called threshold. In this paper we present several characterizations of threshold...
Robert N. Goldberg, Manuel A. Ribeiro da Silva, Maria D. Ribeiro da Silva, Ana I. Lobo Ferreira, Quan Shi, Brian F. Woodfield
The thermochemistry of alpha-D-xylose(cr) was studied by means of oxygen bomb calorimetry and a Physical Property Measurement System (PPMS) in zero magnetic...
Choline and carnitine are quaternary amines that are synthesized in the body or consumed through the diet. Choline is critical for cell membrane structure and...
Seung Ho Yang, Yong Sik Kim, Jae M. Yoo, Nicholas G. Dagalakis
Currently difficulties exist in the fabrication of microelectromechanical systems (MEMS) in the form of Stewart platforms. The macroscale positioning technology...
Difficulties in capturing nanoscale structure by polymerizing microemulsions have persisted with the use of thermal initiation. Bicontinuous microemulsion...
Following the seminal success of the H.264/MPEG-4 advanced video coding (AVC) and its significant commercial impact on the IT industry, ISO/IEC SC29/WG11 (MPEG)...
This article summarizes the information that was presented in the February 2012 Information Technology Laboratory (ITL) bulletin, Guidelines for Securing...
Martin Y. Chiang, Hongbing Wang, Li Zhong, Qiaoyan Tan, Gurinder K. Singh, Song Li, Li Yang, Yanzi Yangben
Polyacrylamide gels with different stiffness and glass were employed as substrates to investigate how substrate stiffness affects the cellular stiffness of...
Vladimir Diky, Robert D. Chirico, Chris D. Muzny, Andrei F. Kazakov, Kenneth G. Kroenlein, Joe W. Magee, Ilmutdin M. Abdulagatov, Carlos A. Diaz-Tovar, Jeong W. Kang, Rafiqul Gani, Michael D. Frenkel
ThermoData Engine (TDE) is the first full-scale software implementation of the dynamic data evaluation concept, as reported in this journal. The present paper...
Karina K. Jimenez Garcia, Robert L. Compton, Yu-Ju Lin, James V. Porto, Ian B. Spielman
We rapidly change the scattering length a_s of a ^{87}Rb Bose-Einstein condensate by means of a Feshbach resonance, simultaneously releasing the condensate from...
This study provides an evaluation of DNA extraction methods when tasked with identifying unknown microorganisms. Research, public health, and clinical...
Lisa R. Gurney, Dale P. Bentz, Taijiro Sato, Jason Weiss
From a sustainability perspective, high volume fly ash (HVFA) concretes are attractive not only because of the reduction in cement content and its associated...
Alexander M. Zolot, Fabrizio R. Giorgetta, Esther Baumann, William C. Swann, Ian R. Coddington, Nathan R. Newbury
The Doppler-limited spectra of methane between 176 THz and 184 THz (5870-6130 cm −1) and acetylene between 193 THz and 199 THz (6430-6630 cm −1) are acquired...
A new laser-based thermostat sensitive to 0.2 mK at room temperature is reported. The method utilizes a fluid-filled prism and interferometric weak value...
Ionization vacuum gauges are used as secondary standards by calibration laboratories and as transfer standards in intercomparisons among metrology laboratories...