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Displaying 29651 - 29675 of 74129

Accuracy Considerations for Critical Dimension Semiconductor Metrology

September 9, 2008
Author(s)
Ronald G. Dixson, Ndubuisi G. Orji, B Bunday, J Allgair
As the size of integrated circuit features continues to decrease, the accuracy of measurements becomes more important. Due to greater emphasis on precision rather than accuracy, many of the measurements made in semiconductor fabs are not traceable to the

Constant Pressure and Vacuum Transporter for 1 kg Mass Standards

September 8, 2008
Author(s)
Vincent J. Lee, Zeina J. Kubarych
This report describes the design and intended use of a constant pressure and vacuum transporter for transferring 1 kg mass standards between different locations and environments without compromising the atmospheric conditions and therefore maintaining

Source Stirring Technique for Reverberation Chambers; Experimental Investigation

September 8, 2008
Author(s)
Galen H. Koepke, Christopher L. Holloway, John M. Ladbury, David A. Hill, Valter Primiani, Paola Russo, Carlo Monteverde
The paper shows the source stirring technique from an experimental point of view. This technique exhibits good statistics for S21. The results illustrate that the field in the cavity has very similar characteristics to the field in a reverberation chamber

Use of Reverberation Chamber to Simulate the Power Delay Profile of a Wireless Environment

September 8, 2008
Author(s)
Christopher L. Holloway, E Genender, Catherine A. Remley, John M. Ladbury, Galen H. Koepke, H Garbe
Multipath propagation environment effects, such as frequency-selective fading, have a strong impact on the quality of the wireless channel. For example, multipath can impact bit error rate (BER) differently than Gaussian noise. For testing wireless devices

Comparison of statistical consistency and metrological consistency

September 6, 2008
Author(s)
Raghu N. Kacker, Ruediger Kessel, Klaus-Dieter Sommer, Xin Bian
The conventional concept of consistency in multiple evaluations of the same measurand is based on statistical error analysis. This concept is based on regarding the evaluations as realizations from sampling probability distributions of potential

Identification of Active Gold Nanoclusters on Iron Oxide Supports for CO Oxidation

September 5, 2008
Author(s)
Andrew A. Herzing, Christopher J. Kiely, Albert F. Carley, Graham J. Hutchings
Gold nanocrystals absorbed on metal oxides have exceptional properties in oxidation catalysis, including the oxidation of carbon monoxide at ambient temperatures, but the identification of the active catalytic gold species among the many present on real

Assignment, Fit, and Theoretical Discussion of the nu-10 Band of Acetaldehyde Near 509 cm -1

September 4, 2008
Author(s)
I Kleiner, N Moazzen-Ahmadi, A R. McKellar, Thomas A. Blake, G Moruzzi, Jon T. Hougen
The lowest small-amplitude vibration in acetaldehyde (CH3CHO) is the in-plane aldehyde scissors mode ?10 at 509 cm?1. This mode lies about 100 cm?1 above the top of the barrier to internal rotation of the methyl group and is relatively well separated from

Potential energy surface for interactions between two hydrogen molecules

September 4, 2008
Author(s)
Allan H. Harvey, Konrad Patkowski, Wojciech Cencek, Piotr Jankowski, Krzysztof Szalewicz, Giovanni Garberoglio
Nonrelativistic clamped-nuclei energies of interaction between two ground-state hydrogen molecules with intramolecular distances fixed at their average value in the lowest rovibrational state have been computed. The calculations applied the supermolecular

Detection of food pathogens by on-chip PCR

September 3, 2008
Author(s)
Pierre-Alain Auroux, Barbara Jones
This is a chapter that will be part of a book on detection of pathogens using state-of-the-art detection methods. We are focusing on the use of microfluidic chips to implement DNA analysis of pathogens by the polymerase chain reaction.

External Magnetic Field Effects on a Distorted Kagome Antiferromagnet

September 2, 2008
Author(s)
J.-H. Kim, Sungdae Ji, S.-H. Lee, B. Lake, Taner N. Yildirim, H. Nojiri, H. Kikuchi, K. Habicht, Yiming Qiu, K. Kiefer
We report bulk magnetization, and elastic and inelastic neutron scattering measurements under an external magnetic field, H, on the weakly coupled distorted kagom¿e system, Cu 2(OD) 3Cl. Our results show that the ordered state below 6.7 K is a canted

An Accurate Capacitance-Voltage Measurement Method for Highly Leaky Devices

September 1, 2008
Author(s)
Yun Wang, Kin P. Cheung, Y.J. Choi, Byoung Hun Lee
Accurate CV measurement becomes extremely difficult in advanced CMOS technology due to high level of leakage across the gate dielectric. Recently, a new Time-Domain-Reflectometry (TDR) based CV measurement method was introduced. This new method offers ease
Displaying 29651 - 29675 of 74129