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Search Publications

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Displaying 3726 - 3750 of 74079

Thin Film Edge Property Measurements by Edge Saturation

October 12, 2021
Author(s)
Brian B. Maranville, Robert McMichael, Cindi L. Dennis, C A. Ross, J Cheng
Two techniques are described for characterizing the magnetic properties of the edges in long, straight magnetic stripes, using vector magnetometry. The critical transverse field at which the edge magnetization saturates is determined by measuring

Thomas-Fermi approximation for double condensates

October 12, 2021
Author(s)
B D. Esry, C H. Greene, J P. Burke, J L. Bohn
We present calculations of the Thomas-Fermi wave functions for two simultaneously trapped and condensed hyperfire states of 87rb which has recently observed [C.J. Myatt,et al., Phys. Rev. Lett. (preprint)]. We show that the suppression of the spin exchange

Three-Dimensional Shape Analysis of Coarse Aggregates: Methodology and Preliminary Results on Several Different Coarse Aggregates

October 12, 2021
Author(s)
S T. Erdogan, P N. Quiroga, D Fowler, H A. Saleh, Richard A. Livingston, Edward Garboczi, Peter M. Ketcham, John G. Hagedorn, Steven G. Satterfield
The shape of aggregates used in concrete is an important parameter that helps determine many concrete properties. The mathematical technique of spherical harmonic analysis was recently demonstrated to be able to effectively analyze three dimensional

Tight-Binding Theory of Quantum Dot Arrays: InAs Dots

October 12, 2021
Author(s)
Javier Aizpurua, G C. Bryant, W Jaskolski
We model the electronic structure and optical properties of coupled self-assembled dots and period dot arrays by use of tight-binding theory. Coupling in dot molecules and dot arrays modifies significantly the level ordering and state symmetries. We show

Time-Domain Processing to Determine Free Space Antenna Factor

October 12, 2021
Author(s)
Dennis G. Camell, Robert Johnk
This paper demonstrates the usefulness of time-domain processing to determine free-space antenna factors (FSAF) for EMC antennas. Procedures are explained and data is provided from 30 MHz to 9 GHz. We investigate time gating of dense frequency packed

Tin Whisker Test Method Development

October 12, 2021
Author(s)
Valeska Schroeder, P Bush, Nick Vo, Maureen E. Williams
In response to legislation banning Pb from electronics, any component suppliers plan to implement tin-based lead-free surfaces finishes to replace current Sn-Pb finishes. The industry needed a test for assessing the susceptibilty of tin-based finishes to

Titanic, The Anatomy of a Disaster -- A Report From the Marine Forensic Panel [SD-7]

October 12, 2021
Author(s)
W H. Garzke, D K. Brown, P K. Matthias, R Cullimore, D Wood, D Livingstone, H P. Leighly, Timothy J. Foecke, A Sandiford
W98-0170 Withdrawn by Author on 02/02/98: Please withdraw WERB Manuscript W98-0170 from consideration. It was entitled 'Titanic: Anatomy of a Disaster . . .' I am removing myself as coauthor to satisfy the concerns of WERB with the least commitment of time

Towards Clinical Application of Methylated DNA Sequences as Cancer Biomarkers: A Joint NCI s EDRN & NIST Workshop on Standards, Methods, Assays, Reagents and Tools (SMART)

October 12, 2021
Author(s)
J Kagan, S Srivastava, Peter E. Barker, S Belinsky, P Cairns
Numerous studies have demonstrated the promise of DNA methylation of cancer genes as potential biomarkers for clinical application in the risk, diagnosis and prognosis of cancer. Barriers to more rapid validation and application include the selection of

Towards Metrological Traceability for DNA Fragment Ratios in GM Quantitation. Part A The Effect of DNA Extraction Methods on the Quantitative Determination of Bt176 Corn by Real-Time PCR

October 12, 2021
Author(s)
Ph Corbisier, W Boothaerts, S Giorio, Heinz Schimmel, M J. Burns, A Baoutina, K R. Emslie, S Furui, Y Kurosawa, Marcia J. Holden, H H. Kim, Y M. Lee, M Kawaharasake, D. W. Sin, J. Wang
An international CCQM-P60 pilot study involving 8 national metrological institutes was organized to investigate if the quantification of genetically modified (GM) corn powder by real-time PCR was affected by the DNA extraction methods applied. Four

Towards Optimization of Patterned Superhydrophobic Surfaces

October 12, 2021
Author(s)
Bharat Bhushan, Michael Nosonovsky, Yong C. Jung
Experimental and theoretical study of wetting properties of patterned Si surfaces with cylindrical flat-top pillars of various sizes and pitch distances is presented. The values of the contact angle (CA), contact angle hysteresis (CAH) and tilt angle (TA)

Toxic Potency Values for Smoke from Products and Materials

October 12, 2021
Author(s)
J L. Neviaser, Richard Gann
Many devices have been used to generate data on the toxic potency of smoke from burning products and materials. This paper critically reviews those apparatus and sorts them by the combustion conditions (related to a type of fire) producing the smoke, the

Transient Phenoxyl Radicals: Formation and Properties in Aqueous Solutions

October 12, 2021
Author(s)
S Steenken, Pedatsur Neta
This chapter discusses the various methods of formation of phenoxyl radicals (oxidation of phenols by metal ions, by free radicals and radical cations, reaction of phenols with hydroxyl radicals, autoxidation of phenols, etc.) and the properties of

Transition-Edge Sensors

October 12, 2021
Author(s)
Kent D. Irwin, Gene C. Hilton
In recent years, superconducting transition-edge sensors (TES) have emerged as powerful, energy-resolving detectors of single photons from the near infrared through gamma rays and sensitive detectors of photon fluxes out to millimeter wavelengths. The TES

Tribological Performance of Head-Disk Interface Due to Nanoasperity Impacts

October 12, 2021
Author(s)
Tze J. Chuang, Stephen M. Hsu
During the track accessing mode ofa hard disk drive, theflying height of the slider over thedisk surface becomes smaller and smaller as the demand in data storage density increases. As aresult, the propensity of glide avalanche is bound to increase when

Tunable Multiferroic Properties in Nanocomposite PbTiO3-CoFe2O4 Epitaxial Thin Films

October 12, 2021
Author(s)
Makoto Murakami, K S. Chang, M A. Aronova, C L. Lin, M-H Yu, Jason Hattrick-Simpers, M. Wuttig, Ichiro Takeuchi, C Gao, S E. Lofland, Leonid A. Bendersky
We report on the synthesis of PbTiO3-CoFe2)4 (PTO-CFO) multiferroic nanocomposite and continuous turning of their ferroic properties as a function of composition on thin-film composition spreads. Highest dielectric constant and non-linear dielectric signal

Tuning the Fragility of Polymer Melts With Antiplasticizer Additives

October 12, 2021
Author(s)
Robert A. Riggleman, K Yoshimoto, Jack F. Douglas, J J. de Pablo
Using molecular dynamics simulations, we have developed and analyzed a model that exhibits antiplasticization behavior by decreasing the glass transition temperature, increasing the density of the system below the glass transition temperature of the pure

Tuning the Mean-Field Energy in a Fermi Gas of Atoms

October 12, 2021
Author(s)
C A. Regal, Deborah S. Jin
An exotic superfluid phase has been predicted for an ultracold gas of fermionic atoms. Experimenters have cooled these gases into the quantum degenerate regime and explored collisional effects. However, quantum mechanical many-body interaction phenomena
Displaying 3726 - 3750 of 74079