Search Publications

NIST Authors in Bold

Displaying 3976 - 4000 of 4261

Structure and Stability of Phospholipid Bilayers Hydrated by a Room-Temperature Ionic Liquid/Water Solution: a Neutron Reflectometry Study

October 23, 2014

Author(s)

Antonio Benedetto, Frank Heinrich, Miguel A. Gonzalez, Giovanna Fragneto, Erik Watkins, Pietro Ballone

Neutron reflectometry measurements (NR) have been carried out to probe the structure and stability of two model bio-membranes consisting of POPC and DMPC phospholipid bilayers hydrated by water solutions of two prototypical room-temperature ionic liquids

Errors in Variables and Ridge Regression for Structural Data from Synthesized Amorphous Calcium Phosphate

September 19, 2014

Author(s)

Adam L. Pintar

As vertebrates form mineralized tissues such as bone and teeth they use amorphous mineral precursors to store ions for use as needed. One such precursor is thought to be amorphous calcium phosphate (ACP), but this idea has lately come into question because

Performance Benchmarking and Intensity Calibration of a Widefield Fluorescence Microscope Using Fluorescent Glass

August 11, 2014

Author(s)

Michael W. Halter, Elianna Bier, Paul C. DeRose, Gregory A. Cooksey, Steven J. Choquette, Anne L. Plant, John T. Elliott

… two different materials as the physical artifact, uranyl-ion-doped glass and Schott 475 GG filter glass. Both are …

Synapsable quadruplex-mediated fibers

May 3, 2013

Author(s)

Veronika A. Szalai, Miguel A. Mendez

We have fabricated and characterized a novel DNA based nanofiber created by synergistic self-assembly of guanine quadruplex (Hoogsteen base pairing) and double-stranded DNA (Watson-Crick base pairing). The assembly of our nanofibers occurs in several steps

Microwave-Assisted Extraction and Quantitative LC/ID-MS Measurement of Total Choline and Free Carnitine in Food Standard Reference Materials

December 4, 2012

Author(s)

Melissa M. Phillips, Lane C. Sander

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 function and in synthesis of the neurotransmitter acetylcholine. Carnitine mediates cellular

Organophosphate and Phthalate Esters in Standard Reference Material 2585 "Organic Contaminants in House Dust"

November 8, 2011

Author(s)

Stephen A. Wise, Caroline Bergh, Giovanna Luongo, Conny Ostman

… gas chromatography - tandem mass spectrometry in positive ion chemical ionization mode. Seven phthalates were detected …

Multi-level Spectroscopy of Two-Level Systems Coupled to a dc SQUID Phase Qubit

April 7, 2010

Author(s)

T. A. Palomaki, S. K. Dutta, R M. Lewis, A J. Przybysz, B. K. Cooper, H. Kwon, J. R. Anderson, C. J. Lobb, F. C. Wellstood, Eite Tiesinga

We report spectroscopic measurements of discrete two-level systems (TLSs) coupled to a dc SQUID phase qubit with a 16 μm2 area Al/AlOx/Al junction. Applying microwaves in the 10 GHz to 11 GHz range, we found eight avoided level crossings with splitting

From Stable Lasers to Optical-Frequency Clocks

October 16, 2008

Author(s)

John L. Hall, Jun Ye, L -. Ma, J L. Peng, M Notcutt, J D. Jost, A Marian

… the Hydrogen Maser. We note the bifurcation between single-ion-based clocks - likely to be the stability/reproducibility …

Measuring the Extent of Exfoliation in Polymer/Clay Nanocompsites Using Real-Time Process Monitoring Methods

October 16, 2008

Author(s)

Anthony J. Bur, T Y. Lee, S C. Roth, P R. Start

Polymer/Clay nanocomposites were compounded using a twin screw extruder that was instrumented with multiple sensors. The sensors were situated in a slit die chamber that was attached to the exit of the extruder and yielded data about dielectric, optical

Realizing the SI in the 21st Century at NIST

October 16, 2008

Author(s)

K B. Gebbie

… an optical atomic clock based on a single trapped 199 Hg+ ion to take advantage of the higher operating frequency, and …

Relative Volatilities of Ionic Liquids by Vacuum Distillation of Ionic Liquid Mixtures

June 7, 2007

Author(s)

Jason A. Widegren, Yi-ming Wang, Wesley A. Henderson, Joe W. Magee

The relative volatilities of a variety of common, aprotic ionic liquids have been determined for the first time. Equimolar mixtures of ionic liquids were vacuum distilled in a glass sublimation apparatus at approximately 473 K. The composition of the

Formation and Reaction of Br 2 - Radicals in the Ionic Liquid Methyltributylammonium Gis(trifluoromethylsufonyl)imide and in Other Solvents

November 1, 2002

Author(s)

J Grodkowski, Pedatsur Neta

Reaction of solvated electrons with BrCh 2Ch 2Br produces Br - and CH 2CH 2Br, which decomposes rapidly into CH 2=CH 2 and Br with Br 2 -. The stability of Br 2 - is much greater in the ionic liquid and in acetonitrile than in water or alcohols. The rate

Superconformal Electrodeposition of Copper in 500-90 nm Features

December 1, 2000

Author(s)

Thomas P. Moffat, Daniel Wheeler, W H. Huber, Daniel Josell

… counterbalance the influence of the differential cupric ion concentration that develops within the tranches. …

Correlation of End-of-Range Damage Evolution and Transient Enhanced Diffusion of Boron in Regrown Silicon

December 1, 1999

Author(s)

L S. Robertson, M E. Law, K. S. Jones, L M. Rubin, J Jackson, P Chi, David S. Simons

… at 750 C, for times ranging from 15 min to 6 h. Secondary ion mass spectrometry was used to monitor the dopant …

The Vibrational Spectra of CO 2 + , (CO 2 ) 2 + , CO 2 - , and (CO 2 - Trapped in Solid Neon

September 8, 1999

Author(s)

Warren E. Thompson, Marilyn E. Jacox

… or by a weakly interacting (CO 2 ) n CO 2 complex. Such ion-molecule complexes contribute other absorptions near υ 3 …

Reinterpretation of the Spectra of Hydrated Co++: An ab initio Study

July 1, 1998

Author(s)

H S. Gilson, Morris Krauss

… for these complexes with one water replaced by a hydroxide ion. The results of the calculations are compared with …

Photothermal Radiometry Applied to Angstrom's Method for Measuring the Thermal Diffusivity of CVD Diamond

April 1, 1998

Author(s)

A Feldman, N M. Balzaretti

… same specimens. The heat source was the beam of an argon-ion laser focused onto the specimen surface either with a …

Acid Gas Production in Inhibited Propane-Air Diffusion Flames

August 21, 1994

Author(s)

Gregory T. Linteris

… analysis of the final products of the flames using ion-selective electrodes for F anc Cl provides an …

Acid Gas Production in Inhibited Diffusion Flames

May 3, 1994

Author(s)

Gregory T. Linteris, M D. King, A Liu, C A. Womeldorf, Y. E. Hsin

… analysis of the final products of the flames using ion-selective electrodes for F and Cl provided an …

Measuring Dimensionality of Cell-Scaffold Contacts of Primary Human Bone Marrow Stromal Cells Cultured on Electrospun Fiber Scaffolds

January 1, 2023

Author(s)

Carl Simon Jr., Peter Bajcsy, Joe Chalfoun, Michael Paul Majurski, Mary C. Brady, Mylene Simon, Nathan Hotaling, Nick Schaub, Allison Horenberg, Piotr Szczypinski, Dongbo Wang, Veronica DeFelice, Soweon Yoon, Stephanie Florczyk

… on the fluorescent fibers and films and the i) hBMSCs, ii) fibers and iii) films were imaged by confocal …

Nanoscopic Dynamics of Bicontinuous Microemulsions: Effect of Membrane-Associated Protein

July 28, 2017

Author(s)

V. K. Sharma, Douglas G. Hayes, Volker S. Urban, Hugh M. O'Neill, Madhu Sudan Tyagi, Eugene Mamontov

… motion along the surface of the oil nanodomains and (ii) localized internal motion. Lateral motion can be …

Investigation of the Charge Compensation Mechanism on the Electrochemically Li-ion Deintercalated Li1xCo1/3Mn1/3O2 Electrode System by Combination of Soft and Hard X-ray Absorption Spectroscopy

December 14, 2005

Author(s)

W S. Yoon, Mahalingam Balasubramanian, Kyung Y. Chung, Xiao-Qing Yang, J Bcbreen, C P. Grey, Daniel A. Fischer

… Charge Compensation Mechanism on the Electrochemically Li-ion Deintercalated Li1xCo1/3Mn1/3O2 Electrode System by …

Electron-impact excitation of multiply-charged ions using energy loss in merged beams: e+Si 3+ (3s 2 S 1/2 )- e+Si 3+ (3p 2 P 1/2,3/2 ), in Proceedings, Vth International Conference on the Phys

January 1, 1991

Author(s)

E K. Wahlin, J S. Thompson, G H. Dunn, R A. Phaneuf, D C. Gregory, A C. Smith

… Electron-impact excitation of multiply-charged ions using energy loss in merged beams: e+Si 3+ (3s 2 S 1/2 …

Synthesis and Characterization of the Novel Breathing Pyrochlore Compound Ba3Tm2Zn5O11

December 6, 2024

Author(s)

Lalit Yadav, Rabindranath Bag, Ramesh Dhakal, Stephen Winter, Jeffrey Rau, Alexander Kolesnikov, Andrey Podlesnyak, Craig Brown, Nicholas Butch, David Graf, Michel Gingras, Sara Haravifard

… fitted crystal electric field model predicting a single-ion singlet ground state and an energy gap of ∼9meV …

Itinerant A-Type Antiferromagnet Order in Co1/4TaSe2

October 11, 2024

Author(s)

H. C. Mandujano, Gicela Saucedo Salas, Tianyu Li, Peter Zavalij, Alicia Manjon-Sanz, Nicholas Butch, Efrain Rodriguez

… the results of this work in the context of other magnetic-ion intercalated TMDs, especially those of Ta and Nb. …

Advanced communications
-Open Radio Access Network (Open-RAN)
-Quantum communications
-Spectrum sharing
-Wireless (RF)
Artificial intelligence
-AI measurement and evaluation
-Autonomous systems
--Automated vehicles
--Autonomous laboratories
-Applied AI
-Fundamental AI
-Hardware for AI
-Machine learning
-Trustworthy and responsible AI
Bioscience
-Bioeconomy
--Biological data
-Bioimaging
-Bioinformatics
-Biomanufacturing
-Biomaterials
-Biometrology
-Biosecurity
--Biosurveillance
--Genomic cybersecurity
--Nucleic acid sequence screening
-Cell measurements
-Engineering / synthetic biology
--Biofabrication
--Cell-free systems
--Genome engineering
--Protein engineering
-Gene delivery systems
-Genome editing
-Genomics
-Glycomics
-Metabolomics
-Microbial measurements
-Proteomics
Buildings and Construction
-Building codes and standards
-Building control systems
-Building damage and repair
-Building economics
-Building materials
-Energy efficiency
-Heating, ventilation and air conditioning equipment
-Indoor air quality
-Structural engineering
-Thermal comfort
Chemistry
-Analytical chemistry
-Chemical engineering and processing
-Chemical thermodynamics and chemical properties
-Molecular characterization
-Theoretical chemistry and modeling
-Thermochemical properties
Electronics
-Electromagnetics
-Flexible electronics
-Magnetoelectronics
-Optoelectronics
-Organic electronics
-Semiconductors
-Sensors
-Superconducting electronics
Energy
-Alternative energy
-Conventional energy
-Electric power / smart grid
-Fuels
Environment
-Air / water / soil quality
-Climate Measurements
-Environmental health
-Greenhouse gas measurements
-Marine science
-Sustainability
Fire
-Fire detection
-Fire dynamics and science
-Fire fighting
-Fire modeling
-Fire risk reduction
-Materials flammability
-Structural fire resistance
-Wildland urban interface fire
Forensic Science
-Digital evidence
-Drugs and toxicology
-Firearms and toolmarks
-Forensic biometrics
-Forensic genetics
-Trace evidence
Health
-Biopharmaceuticals
-Cell and gene therapy
-Clinical diagnostics
--Cancer
--Medical imaging
-Food and nutrition
-Human microbiome
-Precision medicine
-Regenerative medicine and advanced therapy
--Flow cytometry
Information technology
-Biometrics
-Cloud computing and virtualization
-Complex systems
-Computational science
-Conformance testing
-Cyber-physical systems
--Smart cities
-Cybersecurity and privacy
--Cryptography
--Cybersecurity education and workforce development
--Cybersecurity measurement
--Identity and access management
--Privacy engineering
--Risk management
--Securing emerging technologies
--Trustworthy networks
--Trustworthy platforms
-Data and informatics
--Human language technology
--Information retrieval
--Natural language processing
-Digital twins
-Federal information processing standards (FIPS)
-Health IT
-Internet of Things (IoT)
-Interoperability testing
-Location based services
-Mobile
-Networking
--Mobile and wireless networking
--Network management and monitoring
--Network modeling and analysis
--Network security and robustness
--Network test and measurement
--Next generation networks
--Protocol design and standardization
--Software defined and virtual networks
-Software research
--Software testing
-Usability and human factors
--Accessibility
-Video analytics
-Virtual / augmented reality
-Visualization research
-Voting systems
Infrastructure
Manufacturing
-Additive manufacturing
-Factory communications
-Factory operations planning and control
-Interoperability in manufacturing
-Machining
-Manufacturing economics
-Manufacturing quality assurance
-Manufacturing systems design and analysis
-Monitoring, diagnostics and prognostics
-Process improvement
-Process measurement and control
-Product data
-Robotics
--Agility and adaptability
--Collaborative robots
--Dexterous grasping
--Manipulation
--Mobility and industrial autonomous vehicles
--Navigation / actuation / control
--Sensing and perception
-Supply chain
-Sustainable manufacturing
-Systems engineering
-Systems integration
-Technology commercialization
Materials
-Ceramics
-Composites
-Concrete / cement
-Materials characterization
--Composition and structure
--Mechanical properties
--Thermal properties
-Metals
-Modeling and computational material science
-Polymers
-Superconductors
Mathematics and statistics
-Experiment design
-Image and signal processing
-Modeling and simulation research
-Numerical methods and software
-Statistical analysis
-Uncertainty quantification
Metrology
-Amount of substance
-Dimensional metrology
-Electrical / electromagnetic metrology
-Flow metrology and rheology
-Force metrology
-Humidity metrology
-Ionizing radiation metrology
-Mass metrology
-Metric
-Optical / photometry / laser metrology
-Pressure and vacuum metrology
-Thermometry metrology
-Time and frequency metrology
-Weights and measures
Nanotechnology
-Nanobiotechnology
-Nanochemistry
-Nanoelectronics
-Nanofabrication / manufacturing
--Lithography
--Self-assembly
-Nanofluidics
-Nanomagnetics
-Nanomaterials
-Nanomechanics
-Nanometrology
-Nanophotonics
-Nanophysics
-Nanoplasmonics
Neutron research
Performance excellence
-Assessment tools and services
-Baldrige award
-Baldrige examiners
-Baldrige Framework and Criteria
-Best practices
-Leadership development
Physics
-Atomic / molecular / quantum
-Biological physics
-Condensed matter
-Electron physics
-Magnetics
-Nuclear physics
-Optical physics and communications
-Quantum information science
-Radiation
-Spectroscopy
-Thermodynamics
-Time and frequency
Public safety
-Chemical / Biological / Radiological / Nuclear / Explosives (CBRNE)
-First responder preparedness
-Law enforcement
-Public safety communications research
-Response robots
Resilience
-Community resilience
--Recovery
--Resilience metrics
-Disaster and failure studies
-Earthquake risk reduction
-Resilience economics
-Resilient materials
-Windstorm impact reduction
Standards
-Accreditation
-Calibration services
-Conformity assessment
-Documentary standards
-Frameworks
-Quality assurance
-Reference data
-Reference instruments
-Reference materials
-Standards education
Technology transfer
Transportation
-Aerospace
-Automotive