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Dual levitated coils for antihydrogen production

Description: Article on theoretical and experimental efforts to use dual levitated coils to confine relatively large, cold, dense non-drifting recombining antihydrogen plasmas. The theoretical effort includes the development of a classical trajectory Monte Carlo simulation of confinement. The experimental effort includes levitation of a NdFeB permanent ring magnet, which produces a magnetic field that is qualitatively similar to the field that would be produced by the two coaxial superconducting magnetic co… more
Date: April 19, 2013
Creator: Wofford, Joshua D. & Ordonez, Carlos A.
Partner: UNT College of Arts and Sciences
open access

Dynamics of Electroencephalogram Entropy and Pitfalls of Scaling Detection

Description: This article discusses dynamics of electroencephalogram entropy and pitfalls of scaling detection. Herein the authors study the time evolution of diffusion entropy to elucidate the scaling of EGG time series.
Date: March 10, 2010
Creator: Ignaccolo, Massimiliano; Latka, Miroslaw; Jernajczyk, Wojciech; Grigolini, Paolo & West, Bruce J.
Partner: UNT College of Arts and Sciences
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Effect of a finite antiproton mass on antihydrogen synthesis via magnetobound positronium within electron-positron-antiproton plasmas

Description: This article describes a study that was conducted to determine what would happen if a magnetobound positronium system encountered a finite-mass antiproton. The simulation incorporates a strong magnetic field (1 T) similar to that found within Penning traps. The simulation shows that with a finite-mass antiproton, the electron will be ejected from the system, and the positron is captured into a bound state with an antiproton thereby synthesizing antihydrogen.
Date: July 2016
Creator: Thornton, E. A. & Ordonez, Carlos A.
Partner: UNT College of Arts and Sciences
open access

Effects of light on the resistivity of chemical vapor deposited graphene films

Description: This article reports that the resistance of a chemical vapor deposition (CVD) grown graphene film transferred onto an SiO₂ substrate increases to higher saturation values upon exposure to light of decreasing wavelength from the visible to ultraviolet.
Date: October 24, 2016
Creator: Mo, Yudong; Pérez, José M.; Ye, Zhou; Zhao, Lei; Yang, Shizhong; Tan, Liuxi et al.
Partner: UNT College of Arts and Sciences
open access

Electrical Properties of Tin Selenide Under High-Pressure

Description: The article investigates the pressure-induced phase transitions in tin selenide (SnSe). using the first-principles density functional calculations. The experimental results in the nanostructured SnSe revealed a phase transition at 4 GPa whereas that in the well-crystallized samples showed at 10 GPa.
Date: November 3, 2016
Creator: Ghosh, Angsula; Gusmão, M. S.; Chaudhuri, Puspitapallab; de Souza, S. Michielon; Mota, Cicero; Trichês, D. M. et al.
Partner: UNT College of Arts and Sciences
open access

Electron transport properties of bilayer graphene

Description: This article discusses electron transport properties of bilayer graphene.
Date: November 23, 2011
Creator: Li, X.; Borysenko, K. M.; Buongiorno Nardelli, Marco & Kim, Ki Wook
Partner: UNT College of Arts and Sciences
open access

Electrostatic enhancement of light emitted by semiconductor quantum well

Description: This article proposes an electrostatic mechanism for enhancement of light radiated from semiconductor emitter which is comparable in effect to plasmonic mechanism.
Date: October 13, 2015
Creator: Krokhin, Arkadii A.; Neogi, Arup; Llopis, A.; Mahat, M.; Gumen, L.; Pereira, S. et al.
Partner: UNT College of Arts and Sciences
open access

Electrostatic storage ring with focusing provided by the space charge of an electron plasma

Description: Article describes an electronic storage ring that employs the space charge of an electron plasma for focusing. An advantage of the present concept is that slow ions, or even a stationary ion plasma, can be confined. The concept employs an artificially structured boundary, which is defined at present as one that produces a spatially periodic static field such that the spatial period and range of the field are much smaller than the dimensions of a plasma or charged-particle beam that is confined … more
Date: April 19, 2013
Creator: Pacheco, J. L.; Ordonez, Carlos A. & Weathers, Duncan L.
Partner: UNT College of Arts and Sciences
open access

Energy transfer in ZnO-anthracene hybrid structure

Description: 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; Morkoç, Hadis et al.
Partner: UNT College of Arts and Sciences
open access

Engineering Metal Oxide Nanostructures for the Fiber Optic Sensor Platform

Description: This article presents an effective integration scheme of nanostructured SnO₂ with the fiber optic platform for chemical sensing applications based on evanescent optical interactions.
Date: January 30, 2014
Creator: Poole, Zsolt; Ohodnicki, Paul; Chen, Rongzhang; Lin, Yuankun & Chen, Kevin P.
Partner: UNT College of Arts and Sciences
open access

Ergodicity breaking and localization

Description: This article studies the joint action of the non-Poisson renewal events (NPR) yielding Continuous-time random walk (CTRW) with index α < 1 and two different generators of Hurst coefficient H ≠ 0.5, one generating fractional Brownian motion (FBM) and another scaled Brownian motion (SBM).
Date: July 25, 2016
Creator: Geneston, Elvis L.; Tuladhar, Rohisha; Beig, Mirza Tanweer A.; Bologna, Mauro & Grigolini, Paolo
Partner: UNT College of Arts and Sciences
open access

The Evolution of Normal Galaxy X-Ray Emission Through Cosmic History: Constraints from the 6 Ms Chandra Deep Field-South

Description: This article presents measurements of the evolution of normal-galaxy X-ray emission from z ≈ 0-7 using local galaxies and galaxy samples in the ≈6 Ms Chandra Deep Field-South (CDF-S) survey.
Date: June 24, 2016
Creator: Lehmer, Bret; Basu-Zych, A.; Mineo, S.; Brandt, William Nielsen; Eufrasio, R. T.; Fragos, T. et al.
Partner: UNT College of Arts and Sciences
open access

Excitation of the n=2 levels of hydrogen by proton impact for hydrogen beam diagnostics

Description: This article describes the atomic orbital close coupling results for excitation to the n=2 states to document the computational procedure adopted and to convey new insight into the behavior of these fundamental cross sections.
Date: January 15, 2015
Creator: Schultz, David R. & Ovchinnikov, S.Y.
Partner: UNT College of Arts and Sciences
open access

First-principles analysis of electron-phonon interactions in graphene

Description: Article on first-principles analysis of electron-phonon interactions in graphene.
Date: March 16, 2010
Creator: Borysenko, Kostyantyn M.; Mullen, Jeffrey T.; Barry, E. A.; Paul, S.; Semenov, Yuriy G.; Zavada, J. M. et al.
Partner: UNT College of Arts and Sciences
open access

Flexible Holographic Fabrication of 3D Photonic Crystal Templates with Polarization Control through a 3D Printed Reflective Optical Element

Description: This article systematically studies the holographic fabrication of three-dimensional (3D) structures using a single 3D printed reflective optical element (ROE), taking advantage of the ease of design and 3D printing of the ROE.
Date: July 21, 2016
Creator: Lowell, David; George, David; Lutkenhaus, Jeffrey; Tian, Chris; Adewole, Murthada; Zhang, Hualiang et al.
Partner: UNT College of Arts and Sciences
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