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Displaying 42701 - 42725 of 74053

New NIST Photomask Linewidth Standard

December 1, 2002
Author(s)
James E. Potzick, J Pedulla, Michael T. Stocker
NIST is preparing to issue the next generation in its line of binary photomask linewidth standards. Called SRM 2059, it was developed for calibrating microscopes used to measure linewidths on photomasks, and consists of antireflecting chrome line and space

NIST Standards for Microanalysis and the Certification Process

December 1, 2002
Author(s)
Ryna B. Marinenko
Procedures for testing research materials for the determination of the extent of within-specimen heterogeneity and between-specimen heterogeneity are described. These procedures, which have been developed and used at NIST in the certification of several

Overview: Damage in Brittle Layer Structures From Concentrated Loads

December 1, 2002
Author(s)
Brian R. Lawn, Y N. Deng, P Miranda, Antonia Pajares, H Chai, D H. Kim
In this article, we review recent advances in the understanding and analysis of damage initiation and evolution in laminate structures with brittle outlayers and compliant sublayers, in concentrated loading. The relevance of such damage to lifetime

Phase Diagrams for Lead-Free Solder Alloys

December 1, 2002
Author(s)
Ursula R. Kattner
The need for new improved solder alloys and better understanding of reactions during the soldering process grow steadily as the need for smaller and more reliable electronic products grows. A candidate solder alloy needs to fulfill basic requirements

Photomask Dimensional Metrology in the SEM: Has Anything Really Changed?

December 1, 2002
Author(s)
Michael T. Postek, Andras Vladar, Marylyn H. Bennett
Photomask dimensional metrology in the scanning electron microscope (SEM) has not evolved as rapidly as the metrology of resists and integrated circuit features on wafers. This has been due partly to the 4x (or 5x) reduction in the optical steppers and

Polymer/Layered Silicate Nanocomposites from Thermally Stable Trialkylimidazolium-Treated Montmorillonite.

December 1, 2002
Author(s)
Jeffrey W. Gilman, W H. Awad, Rick D. Davis, John R. Shields, Richard H. Harris Jr., C H. Davis, A B. Morgan, T E. Sutto, J H. Callahan, Paul C. Trulove, H DeLong
The limited thermal stability of alkylammonium cations intercalated into smectite minerals (e.g., montmorillonite, MMT) and the processing instability of some polymers [polyamide-6 (PA-6) and polystyrene (PS)] in the presence of nanodispersed MMT have

Preface to Cavity-Enhanced Spectroscopies

December 1, 2002
Author(s)
Roger D. van Zee, J P. Looney
This submission is an introduction to Cavity-Enhanced Spectroscopy, a book which is to be published by Academic Press.

Refrigeration Methods for Superconductors

December 1, 2002
Author(s)
Ray Radebaugh
This chapter reviews various methods commonly used for achieving the cryogenic temperatures required of superconducting materials. The problems associated with cryogenic refrigerators (cryocoolers), such as poor reliability, low efficiency, electromagnetic

Report of the 87th National Conference on Weights and Measures

December 1, 2002
Author(s)
H V. Oppermann, T L. Grimes
The 87th Annual Meeting of the National Conference on Weights & Measures (NCWM) was held July 14 through July 18, 2002, at the Omni Netherland Holtel, Cincinnati, OH. The theme of the meeting was A Progressive Partnership for the Future--You and NCWM

Review of Residential Sprinkler Systems: Research and Standards

December 1, 2002
Author(s)
Daniel M. Madrzykowski, R P. Fleming
Automatic sprinkler systems have been successfully used to protect industrial and commercial buildings and their occupants for more than 100 years. Historically, the place which has offered the least amount of fire protection to occupants, was and still is

Rotational Spectrum of Jet-Cooled HfO 2 and HfO

December 1, 2002
Author(s)
A Lesarri, R D. Suenram, D J. Brugh
The rotational spectrum of jet-cooled hafnium dioxide obtained by laser ablation of a solid ceramic rod has been investigated by Fourier transform microwave spectroscopy in the frequency range 8 Hz to 28 GHz. Rotational transitions from the ground and

Single Photon Source with Individualized Single Photon Certifications

December 1, 2002
Author(s)
Alan L. Migdall, D A. Branning, Stefania Castelletto, M J. Ware
As currently implemented, single photon sources cannot be made to produce single photons with high probability, while simultaneously suppressing the probability of yielding two or more photons.Because of this, single photon sources cannot really produce

Solvophobically Driven Self-Assembly of Chiral Supramolecular Dendrimers

December 1, 2002
Author(s)
Virgil Percec, A E. Dulcey, Y Miura, U Edlund, V S. Balagurusamy, Steven Hudson, H Duan, Paul A. Heiney
The self assembly in dilute solution of chiral supramolecular dendrimers is investigated by circular dichroism (CD) spectroscopy. These results are compared with analysis of the bulk state by CD spectroscopy x-ray diffraction electron diffraction and

Spectral Responsivity Determination of a Transfer-Standard Pyroelectric Radiometer

December 1, 2002
Author(s)
George P. Eppeldauer, J Racz, Leonard M. Hanssen
A NIST-Developed pryoelectric radiometer was characterized and calibrated to extend the NIST high accuracy spectral responsively scale from the visible range to the ultraviolet (UV) and infrared (IR). The transmission of the gold-black coated LiNbO 3
Displaying 42701 - 42725 of 74053
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