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NIST Authors in Bold

Displaying 18601 - 18625 of 73697

Applicability of post-ionization theory to laser-assisted field evaporation of magnetite

December 18, 2014
Author(s)
Ann C. Chiaramonti Debay, D. K. Schreiber, Lyle M. Gordon, Karen Kruska
Analysis of the mean Fe ion charge state from laser-assisted field evaporation of magnetite (Fe3O4) reveals unexpected trends as a function of laser pulse energy that break from conventional post-ionization theory for metals. For Fe ions evaporated from

Product Data Sheet Ontology

December 18, 2014
Author(s)
Binyam G. Abeye, Edward J. Barkmeyer Jr., Peter O. Denno
Data exchange transactions for the engineering, procurement, and operation of process equipment depend heavily on product data sheets. Product data sheets are traditional paper forms that serve as the main method of communicating detailed equipment

193 nm scatterfield microscope illumination optics

December 17, 2014
Author(s)
Martin Y. Sohn, Richard M. Silver
A scatterfield microscope for deep sub-wavelength semiconductor metrology using 193 nm light has been designed. In addition to accommodating the fixed numerical aperture and size of its commercial catadioptric objective lens, the illumination optics are

CHAPTER 2: Experimental Techniques 1: Direct Methods

December 17, 2014
Author(s)
Mark O. McLinden
Fluid density is mass per unit volume, and the experimental techniques described in this chapter involve, in one way or another, a clearly defined mass and volume. For this reason, we describe them as “direct” methods. This is in contrast to the vibrating

CHAPTER 4: Density Standards and Traceability

December 17, 2014
Author(s)
Mark O. McLinden
Most instruments for measuring fluid density are not absolute instruments—they must be calibrated with one or more fluids of known density. The selection of appropriate calibration fluids is vital to achieving low uncertainty in a measurement. Also

Guidelines for Media Sanitization

December 17, 2014
Author(s)
Richard L. Kissel, Andrew R. Regenscheid, Matthew A. Scholl, Kevin M. Stine
Media sanitization refers to a process that renders access to target data on the media infeasible for a given level of effort. This guide will assist organizations and system owners in making practical sanitization decisions based on the categorization of

Microwave Rotational Spectral Study of CH3CN-H2O and Ar-CH3CN

December 17, 2014
Author(s)
Francis J. Lovas, J. Sobhanadrib
The microwave spectrum of the molecular complex of acetonitrile (CH3CN) with water (H2O) has been studied with a pulsed-beam Fourier Transform Microwave Spectrometer (FTMW) from a gas sample of 1 % by volume of CH3CN in Ar flowed over a water sample. The

Influence of Metal?MoS2 Interface on MoS2 Transistor Performance: Comparison of Ag and Ti Contacts

December 16, 2014
Author(s)
Hui H. Yuan, Guangjun Cheng, Lin You, Haitao Li, Hao Zhu, Wei Li, Joseph J. Kopanski, Yaw S. Obeng, Angela R. Hight Walker, David J. Gundlach, Curt A. Richter, D. E. Ioannou, Qiliang Li
In this work, we present a study of enhancing MoS2 transistor performance by using proper metal contact. We found that the on-state current of MoS2 field-effect transistors with 30 nm Au/ 30 nm Ag contacts is enhanced more than 60 times and the

Absolute line intensities for oxirane in the 11.4 micron spectral region.

December 15, 2014
Author(s)
Walter J. Lafferty, Jean-Marie Flaud, Fridolin Kwabia
Absolute individual line intensities of numerous transitions of the fundamental ν15, ν12 and ν5 bands of oxirane (ethylene oxide, cyc-C2H4O) have been measured in the 790-940 cm-1 region using seven high-resolution Fourier transform spectra recorded at 0

In-situ Temperature Calibration Capability for Dimensional Metrology

December 15, 2014
Author(s)
Prem K. Rachakonda, Daniel S. Sawyer, Balasubramanian Muralikrishnan, Christopher J. Blackburn, Craig M. Shakarji, Gregory F. Strouse, Steven D. Phillips
The Dimensional Metrology Group (DMG) at the National Institute of Standards and Technology (NIST) has developed a new in-situ temperature calibration system. This paper discusses the system components, an in-situ calibration procedure, the uncertainty

Metrics of Security

December 15, 2014
Author(s)
Yi Cheng, Julia Deng, Jason Li, Scott DeLoach, Anoop Singhal, Xinming Ou
Discussion of challenges and ways of improving Cyber Situational Awareness dominated our previous chapters. However, we have not yet touched on how to quantify any improvement we might achieve. Indeed, to get an accurate assessment of network security and

New x-ray measurements shed light on discrepancy between experiment and QED

December 15, 2014
Author(s)
Lawrence T. Hudson, C T. Chantler, A.T. Payne, M N. Kinnane, John D. Gillaspy, L F. Smale, Albert Henins, J A. Kimpton, E Takacs
Quantum Electro-Dynamics (QED) is the best tested theory of our physical world, yet significant disagreements have emerged between attempts to apply QED to exotic atomic systems. A recent 15 parts-per-million (ppm) experiment on muonic hydrogen, in which

Physical Properties of LiMn 2-x MxO 4 (M = Ni, Fe) Sol-Gel Nanopowders

December 15, 2014
Author(s)
E. Talik, L. Lipinska, A. Guzik, Pawel Zajdel, M. Michalska, M. Szubka, M. Kadziolka-Gawel, Rick L. Paul
The Pechini sol-gel method was applied to obtain LiMn 2-xT xO 4 (T=Ni, Fe; x = 0.1 to 0.5) nanopowders. Crystal and electronic structures, chemical composition and magnetic properties of the materials were characterized by X-ray diffraction, XPS, SEM/EDX

X-Ray microbeam measurements of long range internal stresses in commercial purity aluminum processed by multiple passes of equal-channel angular pressing

December 15, 2014
Author(s)
Lyle E. Levine, Thien Phan, I-Fang Lee, Jonathan Z. Tischler, Huang Yi, Alan G. Fox, Terrance G. Langdon, Mike Kassner
X-ray microbeam diffraction was used to measure long range internal stresses (LRIS) in the grain/subgrain interiors of commercial purity aluminum processed by equal-channel angular pressing for up to 8 passes. The LRIS values at +4.9o off the axial

Structure and Function of the Membrane Anchoring Self-Assembled Monolayers

December 14, 2014
Author(s)
David J. Vanderah, Tadas Ragaliauskas, Mindaugas Mickevicius, Mariya Jankunec, Gediminas Niaura, Gintaras Valincius, Bozena Rakovska
Structure of the self-assembled monolayers (SAMs) used to anchor phospholipid bilayers to surfaces affects the functional properties of the tethered bilayer membranes (tBLMs). SAMs of the same surface composition differing in the lateral distribution of

Device-Level Experimental Observations of NBTI-Induced Random Timing Jitter

December 13, 2014
Author(s)
Guangfan Jiao, Jiwu Lu, Jason Campbell, Jason Ryan, Kin P. Cheung, Chadwin D. Young, Gennadi Bersuker
This work utilizes device-level eye-diagram measurements to examine NBTI-induced changes in timing jitter at circuit speeds. The measured jitter is examined for a variety of ring-oscillator and pseudo-random gate patterns. The ring-oscillator patterns were
Displaying 18601 - 18625 of 73697
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