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Displaying 38526 - 38550 of 74120

Wide-Band Slot Antennas with CPW Feed Lines: Hybrid and Log-Periodic Designs

October 11, 2004
Author(s)
Alpesh Bhobe, Christopher L. Holloway, Melinda Piket-May, Richard Hall
In microwave and millimeter wave applications, slot antennas fed by coplanar waveguides (CPW) are receiving increasing attention. These antennas have several useful properties, such as wider bandwidth as compared to microstrip patch antennas and easier

Controlling the Dynamics of a Single Atom in Lateral Atom Manipulation

October 8, 2004
Author(s)
Joseph A. Stroscio, Robert Celotta
We study the dynamics of a single Co atom during lateral manipulation on a Cu(111) surface in a low temperature scanning tunneling microscope. The Co binding site locations are revealed in a detailed image that results from lateral Co atom motion within

Electrostatic Discharge Protection For Embedded-Sensor Systems-On-a-Chip

October 8, 2004
Author(s)
Javier A. Salcedo, Juin J. Liou, Muhammad Afridi, Allen R. Hefner Jr., Ankush Varma
The robustness of Embedded-Sensor (ES) System-on-a-Chip (SoC) applications involves several design constrains that require a unique assessment. For example, space-efficient electrostatic discharge protection (ESD) must be provided to protect the CMOS

Adaptive Real-Time Road Detection Using Neural Networks

October 6, 2004
Author(s)
M Foedissch, A Takeuchk
We have developed an adaptive real-time road detection application based on Neural Networks for autonomous driving. By taking advantage of the unique structure in road images, the network training can be processed while the system is running. The algorithm

Building Regulatory Systems in a Post-September 11 World.

October 6, 2004
Author(s)
Richard W. Bukowski
The September 11, 2001 attacks in the United States have initiated a significant discussion and rethinking among building regulators not only in the U.S., but also around the world. While most quickly state that regulations should not require that

Planning for On-Road Driving Through Incrementally Created Graphs

October 6, 2004
Author(s)
Stephen B. Balakirsky, Christopher J. Scrapper Jr
A general-purpose hierarchical planning framework that allows for cost-optimal, logic-constrained plans will be presented. This framework will be applied to planning an on-road path for an autonomous vehicle traveling amongst moving and stationary objects

Relating Gloss Loss to Topographical Features of a PVDF Coating

October 6, 2004
Author(s)
J Faucheu, Li Piin Sung, K Wood, Jonathan W. Martin
Semi-gloss commercial poly(vinylidene fluoride) (PVDF) coatings typically have 60o gloss values between 20 and 50. Gloss is affected by PVDF crystallite structures and by the pigmentation. In this paper, we have demonstrated that for some pigmented PVDF

Crystalline Quality of Bonded Silicon-On-Insulator Characterized by Spectroscopic Ellipsometry and Raman Spectroscopy

October 4, 2004
Author(s)
Nhan Van Nguyen, James E. Maslar, Junghyeun Kim, Jin-Ping Han, Jin-Won Park, Deane Chandler-Horowitz, Eric M. Vogel
The crystalline quality of Silicon-On-Insulator fabricated by a wafer bonding technique was examined by spectroscopic ellipsometry and Raman spectroscopy. The detailed modeling of the experimental ellipsometric data yields information about structural

Design Optimization for a Parallel MEMS Mechanism with Flexure Joints

October 4, 2004
Author(s)
Byoung H. Kang, J Wen, Nicholas Dagalakis, Jason J. Gorman
This paper presents an analysis tool and design method forMEMS parallel mechanisms. Due to processing constraints inMEMS fabrication, flexure joints are frequently used in MEMSmechanisms. Flexure joints offer advantages over other joint designdue to their

Fiber-laser-based frequency comb with a tunable repetition rate

October 4, 2004
Author(s)
Brian Washburn, R W. Fox, Nathan R. Newbury, Jeffrey W. Nicholson, K Feder, Paul S. Westbrook, C. G. Jorgensen
A phase-locked, self-references frequency comb generated by a mode-locked fiber soliton laser with a tunable repetition rate is presented. The spacing of the frequency comb is set by the laser?s repetition rate, which can be scanned from 49.3 MHz to 50.1

Seven-DOF Cable-Suspended Robot with Independent Metrology

October 4, 2004
Author(s)
R L. Williams, B Snyder, James S. Albus, Roger V. Bostelman
This paper presents a new cable-suspended robot. It is a 7-cable spatial design with a closed-form forward pose kinematics solution. Applications include automated machining, construction, and sculpting. This paper presents two new ideas. First, an

Transport Coefficients and Molecular Dynamics: Altermatives

October 4, 2004
Author(s)
Raymond D. Mountain
The task of using molecular dynamics to determine the shear viscosity and the thermal conductivity of a model fluid is examined in detail for the Lennard-Jones fluid. The equilibrium time correlation function approach is compared with three nonequilibrium

TRC Thermodynamic Tables - Hydrocarbons, Supplement 128, 2004

October 4, 2004
Author(s)
Michael D. Frenkel
New tables for propylbenzene containing the density for the real fluid at selected temperatures and pressures. New table for heptylbenzene containing the density for the real fluid at selected temperatures and pressures. New table for octylbenzene

Photonic Technologies for Quantum Information Processing

October 2, 2004
Author(s)
Prem Kumar, P G. Kwiat, Alan L. Migdall, Sae Woo Nam, Jelena Vuckovic, F Wong
The last several years have seen tremendous research toward practical optical quantum information processing, including single- and entangled-photon sources and high-efficiency photon counting detectors, covering a range of wavelengths. We review some of
Displaying 38526 - 38550 of 74120
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