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NIST Authors in Bold

Displaying 30676 - 30700 of 73461

Designing high electron mobility transistor heterostructures with quantum dots for efficient, number-resolving photon detection

May 1, 2008
Author(s)
Mary A. Rowe, Eric Gansen, M. Greene, Danna Rosenberg, Todd E. Harvey, Mark Su, Robert Hadfield, Sae Woo Nam, Richard P. Mirin
We describe the design of the epitaxial layers for an efficient, photon-number-determining detector that utilizes a layer of self-assembled quantum dots as an optically addressable gate in a field-effect transistor. Our design features a dedicated

Directed Fabrication of Ceramic Nanostructures on Fragile Substrates Using Soft-Electron Beam Lithography (soft-eBL)

May 1, 2008
Author(s)
Suresh Donthu, Nasim Alem, Zixlao Pan, Shu-you Li, Gajendra Shekhawat, Vinayak Dravid, Kurt D. Benkstein, Stephen Semancik
We demonstrate the use of a facile nanopatterning scheme known as soft-electron beam lithography (soft-eBL) to fabricate and site-specifically position a variety of functional ceramic nanostructures onto fragile substrates: a 75-nm thick electron

Firefighting Technology Research at NIST

May 1, 2008
Author(s)
Daniel M. Madrzykowski, Stephen Kerber
During the past year, the National Institute of Standards and Technology (NIST) has continued work on many projects and started a few new efforts to improve firefighter safety. In addition to the research projects listed below, the Fire Fighting Technology

Gauge Blocks - A Zombie Technology

May 1, 2008
Author(s)
Theodore D. Doiron
Gauge blocks have been the primary method for disseminating length traceability for over 100 years. Their longevity was based on two things: it was relatively inexpensive to deliver very high accuracy to users, and the technical limitation that the range

Methods for Producing Optical Coherent State Superpositions

May 1, 2008
Author(s)
Scott C. Glancy, Hilma M. Vasconcelos
We discuss several methods to produce superpositions of optical coherent states (also known as "cat states"). Cat states have remarkable properties which could allow them to be powerful tools for quantum information processing and metrology. A number of

Mode-selective acoustic spectroscopy of trigonal piezoelectric crystals

May 1, 2008
Author(s)
Ward L. Johnson, Carlos F. Martino, Sudook A. Kim, Paul R. Heyliger
A noncontacting electromagnetic-acoustic-resonance technique is presented for generating and detecting vibrational modes with prescribed symmetries in piezoelectric trigonal crystals with cylindrical geometry. This technique provides the experimental basis

On the Development and Characterization of a Firebrand Generator

May 1, 2008
Author(s)
Samuel L. Manzello, John R. Shields, Thomas G. Cleary, Alexander Maranghides, William E. Mell, Yoshihiko Hayashi, Daisaku Nii, Tsuyoshi Kurita
An experimental apparatus has been constructed in order to generate a controlled and repeatable size and mass distribution of glowing firebrands. The present study reports on a series of experiments conducted in order to characterize the performance of

On the Development and Characterization of a Firebrand Generator

May 1, 2008
Author(s)
Samuel L. Manzello, John R. Shields, Thomas G. Cleary, Alexander Maranghides, William E. Mell, Jiann C. Yang, Yoshihiko Hayashi, Daisaku Nii, Tsuyoshi Kurita
A unique experimental apparatus has been constructed in order to generate a controlled and repeatable size and mass distribution of glowing firebrands. The present study reports on a series of experiments conducted in order to characterize the performance

Optical fiber metrology

May 1, 2008
Author(s)
Gordon W. Day, Douglas L. Franzen, Kent B. Rochford
The development of metrology to support the optical fiber communications industry is an excellent case study of how stakeholders ? fiber manufacturers, their customers, standards-developing organizations, and (in the U.S.) the Federal Government ? worked

Understanding the IPC 175X Data Model

May 1, 2008
Author(s)
Eric D. Simmon, John V. Messina
More and more political bodies (countries, states, and unions) are enacting legislation designed to protect the environment from the impact of manufacturing. One category of restrictive legislation is called Extended Producer Responsibilities (EPR). The

Collaborating with Customers

April 30, 2008
Author(s)
Mylene S. Ouimette, Jo Ann Remshard
Moving to a new information or knowledge management system can be a challenge for any institution, but for a large federal government agency the scope of such a project and the effort required can be particularly demanding. This article describes training

Fifty years of AAPM Involvement in Radiation Dosimetry

April 30, 2008
Author(s)
Geoffrey S. Ibbott, C-M Ma, D W O Rogers, Stephen M. Seltzer, J Williamson
This paper reviews the involvement of the AAPM in various aspects of radiation dosimetry over its fifty year history, emphasizing the especially important role that external beam dosimetry played in the early formation of the organization. Topics covered

Measurements for the Reliability and Electrical Characterization of Semiconductor Nanowires

April 30, 2008
Author(s)
Curt A. Richter, Hao Xiong, Xiaoxiao Zhu, Wenyong Wang, Vincent M. Stanford, Qiliang Li, D. E. Ioannou, Woong-Ki Hong, Takhee Lee
Nanoelectronic devices based upon self-assembled semiconductor nanowires are excellent research tools for investigating the behavior of structures with sub-lithographic features as well as a promising basis for future information processing technologies

Metrology and Standards Needs of Some Categories of Medical Devices

April 30, 2008
Author(s)
J C. Chiao, Julian M. Goldman, David A. Heck, Peter Kazanzides, William J. Peine, James B. Stiehl, Dwight Yen, Nicholas Dagalakis
With rapid advances in meso, micro and nano scale technology devices and electronics a new generation of advance medical devices is emerging, which promises less invasive and more accurate, automated and effective medical treatments. We examined the

On The TREC Blog Track

April 30, 2008
Author(s)
Iadh Ounis, Craig Macdonald, Ian Soboroff
The rise of blogging as a new grassroots publishing medium and the many interesting peculiarities that characterize blogs compared to other genres of documents opened up several new interesting research areas in the information retrieval field. The Blog

STRESS-INDUCED DEFECT GENERATION IN HFO2/SIO2 STACKS OBSERVED BY USING CHARGE PUMPING AND LOW FREQUENCY NOISE MEASUREMENTS

April 30, 2008
Author(s)
Hao Xiong, Dawei Heh, Shuo Yang, Moshe Gurfinkel, Gennadi Bersuker, D. E. Ioannou, Curt A. Richter, Kin P. Cheung, John S. Suehle
A novel approach combining the low frequency drain current noise and the frequency-dependent charge pumping techniques has been employed to extract the trap densities in both the interfacial SiO2 layer and high-k layer in the n-type MOSFETs with HfO2/SiO2

Measured Performance of Three Residential Fuel Cell Systems

April 29, 2008
Author(s)
Mark W. Davis
Under a program to develop a consumer-oriented rating methodology for residential cogeneration fuel cells, the performance of three systems was characterized in the NIST Residential Fuel Cell Test Facility. These systems differed with respect to the type

Tight Bounds for the Multiplicative Complexity of Symmetric Functions

April 28, 2008
Author(s)
Joan Boyar, Rene Peralta
The multiplicative complexity of a Boolean function f is defined as the minimum number of binary conjunction (AND) gates required to construct a circuit representing f , when only exclusive-or, conjunction and negation gates may be used. This article
Displaying 30676 - 30700 of 73461
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