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Displaying 31201 - 31225 of 73829

Line Width Roughness and Cross Sectional Measurements of Sub-50 nm Structures with CD-SAXS and CD-SEM

March 24, 2008
Author(s)
Chengqing C. Wang, Ronald L. Jones, Kwang-Woo Choi, Christopher L. Soles, Eric K. Lin, Wen-Li Wu, James S. Clarke, John S. Villarrubia, Benjamin Bunday
Critical dimension small angle x-ray scattering (CD-SAXS) is a measurement platform which is capable of measuring the average cross section and sidewall roughness in patterns ranging from (10 to 500) nm in pitch with sub nm precision. These capabilities

The TREC 2006 Terabyte Track

March 24, 2008
Author(s)
Stefan Buttcher, Charles L. Clarke, Ian Soboroff
The primary goal of the Terabyte Track is to develop an evaluation methodology for terabyte-scale document collections. In addition, we are interested in efficiency and scalability issues, which can be studied more easily in the context of a larger

Towards Accurate Feature Shape Metrology

March 22, 2008
Author(s)
Ndubuisi G. Orji, Ronald G. Dixson, B Bunday, J Allgair
Over the last few years, the need for shape metrology for process control has increased. A key component of shape metrology is sidewall angle (SWA). However, few instruments measure SWA directly. The critical dimension atomic force microscope (CD-AFM) is

Narrow-Line Magneto-Optical Cooling and Trapping of Strongly Magnetic Atoms

March 21, 2008
Author(s)
Andrew J. Berglund, James L. Hanssen, Jabez J. McClelland
We trap and cool erbium atoms in a quadrupole magnetic field using a stabilized laser tuned to the blue side of a narrow (8 kHz) atomic resonance. Cooling and trapping are observed with a single incident beam, as well as with multiple beams. The trap forms

A Computational Model of the Human Visual Cortex

March 20, 2008
Author(s)
James S. Albus
The brain is first and foremost a control system that is capable of building an internal representation of the external world, and using this representation to make decisions, set goals and priorities, formulate plans, and control behavior with intent to

Aluminum UPD and Alloy Formation on (111)-Textured Au in AlCl_{3}-EMImCl

March 20, 2008
Author(s)
Gery R. Stafford, G Haarberg
The kinetics of Al-Au surface alloy formation was examined during Al underpotential deposition (upd) onto (111)-texture Au from Lewis acidic aluminum chloride-1-ethyl-3-methlimidazolium chloride (AlCl_{3}-EMImCl)using linear sweep stripping voltammetry

Performance Analysis for Stable Mobile Robot Navigation Solutions

March 20, 2008
Author(s)
Christopher J. Scrapper Jr, Rajmohan Madhavan, Stephen B. Balakirsky
Robot navigation in complex, dynamic and unstructured environments demands robust mapping and localization solutions. One of the most popular methods in recent years has been the use of scan-matching schemes where temporally correlated sensor data sets are

ASTM E-57 3D Imaging Systems Committee: An Update

March 19, 2008
Author(s)
Alan M. Lytle, Geraldine S. Cheok, Kamel S. Saidi
In 2006, ASTM committee E57 was established to develop standards for the performance evaluation of 3D imaging systems. The committee's initial focus is on standards for 3D imaging systems typically used for applications including, but not limited to

ASTM E57 3D Imaging Systems Committee: An Update

March 19, 2008
Author(s)
Geraldine S. Cheok, Alan M. Lytle, Kamel S. Saidi
In 2006, an ASTM committee (E57) was established to develop standards for the performance evaluation of 3D imaging systems. The initial focus for the committee is on standards for 3D imaging systems typically used for applications including, but not

Density and Speed of Sound Measurements of Methyl- and Propylcyclohexane

March 19, 2008
Author(s)
Arno D. Laesecke, Stephanie L. Outcalt, Karin Brumback
The density and speed of sound of liquid methylcyclohexane and propylcyclohexane were measured with two vibrating-tube densimeters and a time-of-flight method, respectively. The combined range of the data is from 270 K to 470 K with pressures to 40 MPa

Modified Predictive Formula for the Electron Stopping Power

March 19, 2008
Author(s)
Aleksander Jablonski, S Tanuma, Cedric J. Powell
We report an improved predictive formula for the electron stopping power (SP) based on an analysis and fit of SPs and electron inelastic mean free paths (IMFPs) calculated from optical data for 37 elemental solids and energies between 200 eV and 30 keV

Imaging with modular linear arrays of cryogenic Nb microbolometers

March 17, 2008
Author(s)
Erich N. Grossman, Charles Dietlein, Jon E. Bjarnason, Mabel Ramirez, M. Leivo, J. A. Penttila, P. Helisto, A. Luukanen
We present ultrawideband imagery obtained with modular, 8-element, superconducting Nb microbolometer arrays. Conically scanned images are presented and compared with raster-scanned images obtained on the same arrays and from similar NbN arrays at VTT

On Test Collections for Adaptive Information Retrieval

March 17, 2008
Author(s)
Ellen M. Voorhees
Traditional Cranfield test collections represent an abstraction of a retrieval task that Sparck Jones calls the core competency of retrieval: a task that is necessary, but not sufficient, for user retrieval tasks. The abstraction facilitates research by

CALCULATED REGENERATOR PERFORMANCE AT 4 K WITH HELIUM-4 AND HELIUM-3

March 16, 2008
Author(s)
Ray Radebaugh, Yonghua Huang, Agnes O?Gallagher, John Gary
The helium-4 working fluid in regenerative cryocoolers operating with the cold end near 4 K deviates considerably from an ideal gas. As a result, losses in the regenerator, given by the time-averaged enthalpy flux, are increased and are strong functions of

Measurement Issues in Single-Wall Carbon Nanotubes

March 15, 2008
Author(s)
S Arepalli, Stephen W. Freiman, Stephanie A. Hooker, Kalman D. Migler
Recommended Practice Guide for Single Wall Carbon Nanotube Characterization consisting of five chapters: Introduction; Thermogravimetric Analysis (TGA) ; Near-IR Spectroscopy (NIR), Raman Spectroscopy, Optical, Electron, and Scanned Probe Microscopy.
Displaying 31201 - 31225 of 73829
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