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Space-charge-based electrostatic plasma confinement involving relaxed plasma species (open access)

Space-charge-based electrostatic plasma confinement involving relaxed plasma species

In this article, a numerical study is reported on the equilibrium properties of a surface-emitted or edge-confined non-drifting plasma. A self-consistent finite-differences evaluation of the electrostatic potential is carried out for a non-neutral plasma that follows a Boltzmann density distribution.
Date: October 23, 2012
Creator: Pacheco, J. L.; Ordonez, Carlos A. & Weathers, Duncan L.
Object Type: Article
System: The UNT Digital Library
Low-temperature UV photoluminescence of ion beam synthesized Si nanoclusters embedded in Si (open access)

Low-temperature UV photoluminescence of ion beam synthesized Si nanoclusters embedded in Si

This article explores Ultraviolet (UV) photoluminescence (PL) data taken on a double Au implanted Si matrix and studied over a wide temperature range of 28-220K. The results of this study at lower temperatures indicate the emission to be coming from Si nanoclusters (NCs) embedded in the matrix.
Date: April 3, 2012
Creator: Sahu, G.; Lenka, H.P.; Mahapatra, Durga P.; Rout, B. & Das, M.P.
Object Type: Article
System: The UNT Digital Library
Spatially Periodic Electromagnetic Force Field For Plasma Confinement and Control (open access)

Spatially Periodic Electromagnetic Force Field For Plasma Confinement and Control

In this article, a theoretical understanding is developed of the single-particle reflection properties of a force field, considering the incident charged particles to have a non-drifting, isotropic velocity distribution. Classical trajectory Monte Carlo simulations and analytical modeling are employed. The initiation of an experimental effort to study force fields is described.
Date: April 17, 2012
Creator: Ordonez, Carlos A.; Pacheco, J. L. & Weathers, Duncan L.
Object Type: Article
System: The UNT Digital Library
Direct Measurement of Group Delay Dispersion in Metamagnetics for Ultrafast Pulse Shaping (open access)

Direct Measurement of Group Delay Dispersion in Metamagnetics for Ultrafast Pulse Shaping

This article explores the use of magnetic resonant metamaterials, so called metamagnetics, as dispersive elements for optical pulse shaping.
Date: September 24, 2012
Creator: Brown, Dean P.; Walker, Mark A.; Urbas, Augustine M.; Kildishev, Alexander V.; Xiao, Shumin & Drachev, Vladimir P.
Object Type: Article
System: The UNT Digital Library
Reconfigurable Surface Plasmon Polariton Wave Adapter Designed by Transformation Optics (open access)

Reconfigurable Surface Plasmon Polariton Wave Adapter Designed by Transformation Optics

This article proposes a reconfigurable surface plasmon polariton (SPP) wave adapter designed by transformation optics, which can control the propagation of SPP waves on un-even surfaces.
Date: June 18, 2012
Creator: Arigong, Bayaner; Shao, Jin; Ren, Han; Zheng, Geng; Lutkenhaus, Jeffrey; Kim, HyoungSoo et al.
Object Type: Article
System: The UNT Digital Library
Energy transfer in ZnO-anthracene hybrid structure (open access)

Energy transfer in ZnO-anthracene hybrid structure

This article investigates the origin of the modification of the emission properties of the hybrid structure using temperature dependent and time-dependent photoluminescence spectroscopy.
Date: April 4, 2012
Creator: Shimada, Ryoko; Urban, Ben E.; Sharma, Mamta; Singh, Akhilesh; Avrutin, Vitaliy; MorkoƧ, Hadis et al.
Object Type: Article
System: The UNT Digital Library
Origin of Room Temperature Broadband Light Emission and Carrier Dynamics in Ag Ion-Implanted Silicon Nanocrystals (open access)

Origin of Room Temperature Broadband Light Emission and Carrier Dynamics in Ag Ion-Implanted Silicon Nanocrystals

This article studies the origin of broad band light emission in the ultraviolet to the red from silicon nanoparticles fabricated using a single low energy silver ion implantation.
Date: April 2, 2012
Creator: Singh, Akhilesh; Grycznski, Karol G. & Neogi, Arup
Object Type: Article
System: The UNT Digital Library
Trace Elements and Carcinogenicity: A Subject in Review (open access)

Trace Elements and Carcinogenicity: A Subject in Review

This article reviews the carcinogenicity of various trace elements.
Date: March 22, 2012
Creator: Mulware, Stephen Juma
Object Type: Article
System: The UNT Digital Library
Ferromagnetic ZnO Nanowires for Spintronic Applications (open access)

Ferromagnetic ZnO Nanowires for Spintronic Applications

This book chapter reviews experimental results of observed room temperature ferromagnetism in transition metal doped group II-VI semiconductors.
Date: December 19, 2012
Creator: Philipose, Usha & Sapkota, Gopal
Object Type: Book Chapter
System: The UNT Digital Library
Simulation of an aperture-based antihydrogen gravity experiment (open access)

Simulation of an aperture-based antihydrogen gravity experiment

This article presents a Monte Carlo simulation of an experiment that could potentially determine whether antihydrogen accelerates vertically up or down as a result of earth's gravity.
Date: March 21, 2012
Creator: Ordonez, Carlos A. & Hedlof, R. M.
Object Type: Article
System: The UNT Digital Library
Variability-Selected Low-Luminosity Active Galactic Nuclei in the 4 Ms Chandra Deep Field-South (open access)

Variability-Selected Low-Luminosity Active Galactic Nuclei in the 4 Ms Chandra Deep Field-South

This article demonstrates that the observed variability cannot be explained by X-ray Binary populations or ultraluminous X-ray sources, so the variability is most likely caused by accretion onto a supermassive black hole.
Date: January 18, 2012
Creator: Young, Monica; Brandt, William Nielsen; Xue, Yongquan; Alexander, David M.; Bauer, Franz E.; Lehmer, Bret et al.
Object Type: Article
System: The UNT Digital Library
Extreme Star Formation in the Host Galaxies of the Fastest Growing Supermassive Black Holes at z = 4.8 (open access)

Extreme Star Formation in the Host Galaxies of the Fastest Growing Supermassive Black Holes at z = 4.8

This article reports new Herschel observations of extremely luminous optically selected active galactic nuclei.
Date: March 5, 2012
Creator: Mor, Rivay; Netzer, Hagai; Trakhtenbrot, Benny; Shemmer, Ohad & Lira, Paulina
Object Type: Article
System: The UNT Digital Library
The 4Ms Chandra Deep Field-South Number Counts Apportioned By Source Class: Pervasive Active Galactic Nuclei and the Ascent of Normal Galaxies (open access)

The 4Ms Chandra Deep Field-South Number Counts Apportioned By Source Class: Pervasive Active Galactic Nuclei and the Ascent of Normal Galaxies

This article presents cumulative and differential number-count measurements for the recently completed 4 Ms Chandra Deep Field-South survey.
Date: April 9, 2012
Creator: Lehmer, Bret; Xue, Yongquan; Brandt, William Nielsen; Alexander, David M.; Bauer, Franz E.; Brusa, Marcella et al.
Object Type: Article
System: The UNT Digital Library
Coherence Brightened Laser Source for Atmospheric Remote Sensing (open access)

Coherence Brightened Laser Source for Atmospheric Remote Sensing

This article discusses the coherence brightened laser source for atmospheric remote sensing.
Date: September 18, 2012
Creator: Traverso, Andrew J.; Sanchez-Gonzalez, RodrigoTe; Yuan, Luqi; Wang, Kai; Voronine, Dmitri V.; Zheltikov, Aleksei M. et al.
Object Type: Article
System: The UNT Digital Library
Symmetry-induced intermittency in a stochastic reflexive model (open access)

Symmetry-induced intermittency in a stochastic reflexive model

Article on symmetry-induced intermittency in a stochastic reflexive model.
Date: February 21, 2012
Creator: Palatella, Luigi & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Neural Dynamics: Criticality, Cooperation, Avalanches and Entrainment between Complex Networks (open access)

Neural Dynamics: Criticality, Cooperation, Avalanches and Entrainment between Complex Networks

Book chapter discussing neural dynamics and the criticality, cooperation, avalanches and entrainment between complex networks.
Date: May 22, 2012
Creator: Grigolini, Paolo; Zare, Marzieh; Svenkeson, Adam & West, Bruce J.
Object Type: Book Chapter
System: The UNT Digital Library
Unexpected Structures for Intercalation of Sodium in Epitaxial Graphene-SiC Interfaces (open access)

Unexpected Structures for Intercalation of Sodium in Epitaxial Graphene-SiC Interfaces

In this paper, the authors show using scanning tunneling microscopy, spectroscopy, and ab initio calculations that several intercalation structures exist for Na in epitaxial graphene on SiC(0001). Intercalation takes place at room temperature and Na electron-dopes the graphene. It intercalates in-between single-layer graphene and the carbon-rich interfacial layer. It also penetrates beneath the interfacial layer and decouples it to form a second graphene layer. This decoupling is accelerated by annealing and is verified by direct Na deposition onto the interface layer. The authors' observations show that intercalation in graphene is fundamentally different than in graphite and is a versatile means of electronic control.
Date: February 2012
Creator: Sandin, Andreas; Jayasekera, Thushari; Rowe, J. E.; Kim, Ki Wook; Buongiorno Nardelli, Marco & Dougherty, Daniel B.
Object Type: Paper
System: The UNT Digital Library
Cooperation-induced topological complexity: a promising road to fault tolerance and Hebbian learning (open access)

Cooperation-induced topological complexity: a promising road to fault tolerance and Hebbian learning

This article discusses cooperation-induced topological complexity and the emergence of intelligence.
Date: March 16, 2012
Creator: Turalska, Malgorzata; Geneston, Elvis L.; West, Bruce J.; Allegrini, Paolo & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Charge transfer equilibria in ambient-exposed epitaxial graphene on (0001) 6 H-SiC (open access)

Charge transfer equilibria in ambient-exposed epitaxial graphene on (0001) 6 H-SiC

Article discussing research on charge transfer equilibria in ambient-exposed epitaxial graphene on (0001) 6 H-SiC.
Date: June 5, 2012
Creator: Sidorov, Anton N.; Gaskill, D. Kurt.; Buongiorno Nardelli, Marco; Tedesco, Joseph L.; Myers-Ward, Rachel L.; Eddy, Charles R. et al.
Object Type: Article
System: The UNT Digital Library
Phonon engineering in nanostructures: Controlling interfacial thermal resistance in multilayer-graphene/dielectric heterojunctions (open access)

Phonon engineering in nanostructures: Controlling interfacial thermal resistance in multilayer-graphene/dielectric heterojunctions

Article discussing phonon engineering in nanostructures and controlling interfacial thermal resistance in multilayer-graphene/dielectric heterojunctions.
Date: September 13, 2012
Creator: Mao, R.; Kong, Byoung Don; Kim, Ki Wook; Jayasekera, Thushari; Calzolari, Arrigo & Buongiorno Nardelli, Marco
Object Type: Article
System: The UNT Digital Library
Linear response at criticality (open access)

Linear response at criticality

In this article, the authors study a set of cooperatively interacting units at criticality, and prove with analytical and numerical arguments that they generate the same renewal non-Poisson intermittency as that produced by blinking quantum dots.
Date: October 24, 2012
Creator: Svenkeson, Adam; Bologna, Mauro & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Cooperation in neural systems: Bridging complexity and periodicity (open access)

Cooperation in neural systems: Bridging complexity and periodicity

Article discussing research on cooperation and neural systems and bridging complexity and periodicity.
Date: November 29, 2012
Creator: Zare, Marzieh & Grigolini, Paolo
Object Type: Article
System: The UNT Digital Library
Electric Field Induced Phase Transitions in Polymers: A Novel Mechanism for High Speed Energy Storage (open access)

Electric Field Induced Phase Transitions in Polymers: A Novel Mechanism for High Speed Energy Storage

This article discusses electric field induced phase transitions in polymers.
Date: February 23, 2012
Creator: Ranjan, Vivek; Buongiorno Nardelli, Marco & Bernholc, Jerry
Object Type: Article
System: The UNT Digital Library
Multiple coexisting intercalation structures of sodium in epitaxial graphene-SiC interfaces (open access)

Multiple coexisting intercalation structures of sodium in epitaxial graphene-SiC interfaces

This article discusses multiple coexisting intercalation structures of sodium in peitaxial graphene-SiC interfaces.
Date: March 9, 2012
Creator: Sandin, Andreas; Jayasekera, Thushari; Rowe, J. E.; Kim, Ki Wook; Buongiorno Nardelli, Marco & Dougherty, Daniel B.
Object Type: Article
System: The UNT Digital Library