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Displaying 25401 - 25425 of 74179

Landau Levels and Band Bending in Few-Layer Epitaxial Graphene

April 18, 2011
Author(s)
Hongki Min, Shaffique Adam, Young J. Song, Joseph A. Stroscio, Mark D. Stiles, Allan H. MacDonald
The carrier density distributions in few-layer-graphene systems grown on the carbon face of silicon carbide can be radically altered by the presence of a Scanning Tunneling Microscope (STM) tip used to probe top-layer electronic properties, and by a

Nested Uncertainties and Hybrid Metrology to Improve Measurement Accuracy

April 18, 2011
Author(s)
Richard M. Silver, Nien F. Zhang, Bryan M. Barnes, Hui Zhou, Jing Qin, Ronald G. Dixson
In this paper we present a method to combine measurement techniques that reduce uncertainties and improve measurement throughput. The approach has immediate utility when performing model-based optical critical dimension measurements. When modeling optical

TSOM Method for Semiconductor Metrology

April 18, 2011
Author(s)
Ravikiran Attota, Ronald G. Dixson, John A. Kramar, James E. Potzick, Andras Vladar, Benjamin D. Bunday, Erik Novak, Andrew C. Rudack
Through-focus scanning optical microscopy (TSOM) is a new metrology method that achieves 3D nanoscale measurement resolution using conventional optical microscopes; measurement sensitivities are comparable to what is typical using Scatterometry, SEM and

Short-Range Ordering in the Modified Honeycomb Lattice Compound SrHo 2 O 4

April 17, 2011
Author(s)
S Ghosh, H. D. Zhou, L. Balicas, Jason S. Gardner, Yiming Qiu, C. R. Wiebe
The low temperature behaviour of single crystalline SrHo 2O 4 has been characterized by DC mag- netic susceptibility, heat capacity, and neutron scattering experiments. Our results show that despite the lack of magnetic long-ranged ordering in the presence

Slow and static spin correlations in Dy 2+h Ti 2-hO d7-d

April 17, 2011
Author(s)
Jason S. Gardner, G. Ehlers, P. Fouquet, B. Farago, J. R. Stewart
The static and dynamic spin correlations in the spin-ices Dy 2.3Ti 1.7O 6.85 and Dy 2Ti 2O 7 have been studied in polarised neutron diffraction and neutron spin echo experiments. The measurements reveal that, below 100 mK, the magnetic scattering broadens

Development of Probe Free Mapping of Cell Viability in Hydrogels

April 16, 2011
Author(s)
Joy P. Dunkers, Kaushik Chatterjee, Carl G. Simon Jr.
Diffusion of oxygen in cell/scaffold construct interior is of critical importance to cell viability in constructs of clinically relevant sizes. It has been shown that depletion of oxygen within the scaffold leads to a decrease in cell density and viability

Calorimetric Sensors

April 15, 2011
Author(s)
Richard E. Cavicchi
The calorimetric gas sensor has evolved from a simple metal hot wire to a modern device fabricated using micromachining techniques. The principle of operation is to detect the heat evolved from combustible gases on the sensor surface. While the most widely

Diode Power Probe Measurements of Wireless Signals

April 15, 2011
Author(s)
Catherine A. Remley, Hugo Gomes, Alejandro Testera, Nuno B. Carvalho, Monica Barciela
A new view of diode power probes is presented is this paper. It is shown analytically, by simulations and with measurements, that calibration procedures for diode power probes should be rethought when measuring new wireless standard type of signals. In

Fast and robust quantum computation with Wigner crystals of ions

April 15, 2011
Author(s)
J D. Baltrusch, A Negretti, T Calarco, Jacob Taylor
We present a detailed analysis of the modulated-carrier quantum phase gate implemented with Wigner crystals of ions confined in Penning traps. We elaborate on a recent scheme, proposed by two of us, to engineer two-body interactions between ions in such

TRECVID 2010 - An Overview of the Goals, Tasks, Data, Evaluation Mechanisms, and Metrics

April 15, 2011
Author(s)
Paul D. Over, George M. Awad, Jonathan G. Fiscus, Brian Antonishek, Martial Michel, Alan Smeaton, Wessel Kraaij, Georges Quenot
The TREC Video Retrieval Evaluation (TRECVID) 2010 was a TREC-style video analysis and retrieval evaluation, the goal of which remains to promote progress in content-based exploitation of digital video via open, metrics-based evaluation. Over the last 10

A Feature-preserved Canonical Form for Non-rigid 3D Meshes

April 14, 2011
Author(s)
Zhouhui Lian, Afzal A. Godil
Measuring the dissimilarity between non-rigid objects is a challenging problem in 3D shape retrieval. One potential solution is to construct the models’ 3D canonical forms (i.e., isometry-invariant representations in 3D Euclidean space) on which any rigid

Load Combination Requirements in ASCE Standard 7-10: New Developments

April 14, 2011
Author(s)
Therese P. McAllister, Bruce Ellingwood
The fundamental load combination requirements for strength design (or load and resistance factor design) appearing in Section 2.3 of ASCE Standard 7-10 advance those first developed and implemented in 1982, which since have achieved a state of maturity and

Reference Modulation for Calibrated Measurements of Tag Backscatter

April 14, 2011
Author(s)
Daniel G. Kuester, David R. Novotny, Jeffrey R. Guerrieri, Randy Direen, Zoya Popovic
We present a model and reference backscatter device for calibrating measurements of 860-960 MHz Ultra-High Fre- quency (UHF) tag backscattering. The model relates transmission to and backscattering from the device with a modulation depth calculable from

SHREC11 Track: Generic Shape Retrieval

April 14, 2011
Author(s)
Helin Dutagaci, Afzal A. Godil
In this paper we present the results of the 3D Shape Retrieval Contest 2011 (SHREC’11) track on generic shape retrieval. The aim of this track is to evaluate the performance of 3D shape retrieval algorithms that can operate on arbitrary 3D models. The

A new interface defect spectroscopy method

April 13, 2011
Author(s)
Jason T. Ryan, Liangchun (. Yu, Jae Han, Joseph J. Kopanski, Kin P. Cheung, Jason P. Campbell, Fei Zhang, Chen Wang, John S. Suehle, Vinny Tilak, Jody Fronheiser

A Route to Quantum Magnetism

April 13, 2011
Author(s)
Ian B. Spielman
The trend in using ultracold atoms as simulators of condensed-matter and many-body phenomena is gaining momentum. These systems can now be used to simulate quantum magnetism.

Differences in Polydimethylsiloxane Modification Methods Affect Laminin Deposition and Smooth Muscle Cell Proliferation

April 13, 2011
Author(s)
Joy P. Dunkers, Hae-Jeong Lee, Marvi Matos, Lisa Pakstis, Juan M. Taboas, Steven D. Hudson, Marcus T. Cicerone
When culturing cells on flexible surfaces, it is important to consider extracellular matrix treatments that will remain on the surface under mechanical strain. Here we investigate differences in laminin surfaces that were deposited on oxidized PDMS (plasma

Estimating Common Parameters in Heterogeneous Random Effects Models

April 13, 2011
Author(s)
Andrew L. Rukhin
A question of fundamental importance for meta-analysis of heterogeneous data studies is how to form a best consensus estimator of common parameters, and what uncertainty to attach to the estimate. This issue is addressed for a class of unbalanced linear
Displaying 25401 - 25425 of 74179
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