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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

The Deepest X-Ray View of High-Redshift Galaxies: Constraints on Low-Rate Black Hole Accretion

Description: This article exploits the 7 Ms Chandra observations in the Chandra Deep Field-South (CDF-S), the deepest X-ray survey to date, coupled with CANDELS/GOODS-S data, to measure the total X-ray emission arising from 2076 galaxies at 3.5 ≤ z ≤ 6.5.
Date: August 5, 2016
Creator: Vito, F.; Gilli, Roberto; Vignali, Christian; Brandt, William Nielsen; Comastri, Andrea; Yang, G. et al.
Partner: UNT College of Arts and Sciences
open access

Ion Beam Analysis of Microcrystalline Quartz Artifacts from the Reed Mound Site, Delaware County, Oklahoma

Description: This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings evaluates the potential of particle induced X-ray emission spectrometry as a tool for future Ozarks chert provenance studies based on its ability to facilitate discrimination of Ozarks chert materials from different geological formations and identification of discrete groups of artifacts from the same geological formation.
Date: June 18, 2015
Creator: Younger-Mertz, S. B.; Manuel, J. E.; Reinert, Tilo; Szilasi, S. Z.; Hammerstedt, S. W. & Glass, Gary A.
Partner: UNT College of Arts and Sciences
open access

Laser Ablated Carbon Nanodots for Light Emission

Description: This article reports the synthesis of fluorescent carbon dots-like nanostructures obtained through the laser ablation of a carbon solid target in liquid environment is reported.
Date: September 22, 2016
Creator: Reyes, Delfino; Camacho, Marco; Camacho, Miguel; Mayorga, Miguel; Weathers, Duncan L.; Salamo, Greg et al.
Partner: UNT College of Arts and Sciences
open access

Reformulation of DFT + U as a Pseudohybrid Hubbard Density Funcitonal for Accelerated Materials Discovery

Description: This article introduces ACBN0, a pseudohybrid Hubbard density functional that yields an improved prediction of the band structure of insulators such as transition-metal oxides, with only a negligible increase in computational cost.
Date: January 28, 2015
Creator: Agapito, Luis A.; Curtarolo, Stefano & Buongiorno Nardelli, Marco
Partner: UNT College of Arts and Sciences
open access

Artificially Structured Boundary as a Charged Particle Beam Deflector Shield

Description: This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings studies the possibility of using a planar artificially structured boundary as a charged particle beam deflector shield via classical trajectory Monte Carlo simulation.
Date: June 18, 2015
Creator: Hedlof, R. M. & Ordonez, Carlos A.
Partner: UNT College of Arts and Sciences
open access

Multiple Aperture-Based Antihydrogen Parallel Plate Gravity Experiment

Description: This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings describes an experiment that could be carried out at the CERN Antiproton Decelerator facility to determine the direction of acceleration of antihydrogen in the earth's gravitational field.
Date: June 8, 2015
Creator: Treacher, A. H.; Hedlof, R. M. & Ordonez, Carlos A.
Partner: UNT College of Arts and Sciences
open access

Particle Transport along Magnetic Null Lines as Sputter or Antihydrogen Source

Description: This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings investigates particle transport along null magnetic lines using classical trajectory Monte Carlo simulations, described as a traveling wave and through diffusion equations.
Date: June 18, 2015
Creator: Lane, Ryan A. & Ordonez, Carlos A.
Partner: UNT College of Arts and Sciences
open access

Magnetic Control of a Charge-Neutralized Ion Beam

Description: This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings presents a scheme for controlling charge-neutralized beams using a distortion of a magnetic guide field via the presence of two current carrying wires.
Date: June 18, 2015
Creator: Phillips, R. E. & Ordonez, Carlos A.
Partner: UNT College of Arts and Sciences
open access

Radial Expansion of a Low Energy Positron Beam Passing Through a Cold Electron Plasma within a Uniform Magnetic Field

Description: This paper from the 23rd Conference on Application of Accelerators in Research and Industry conference proceedings studies the radial expansion of a low energy positron beam passing through a cold electron plasma within a uniform magnetic field using a classical trajectory Monte Carlo simulation.
Date: June 18, 2015
Creator: Aguirre, F. F. & Ordonez, Carlos A.
Partner: UNT College of Arts and Sciences
open access

State-selective charge transfer cross sections for light ion impact of atomic hydrogen

Description: This article compares results of approaches applicable in a lower impact energy regime by benchmarking them using key experimental data in order to make knowledge of these cross sections available across the range parameters needed by fusion plasma diagnostics.
Date: January 15, 2015
Creator: Schultz, David R.; Stancil, P.C. & Havener, C.C.
Partner: UNT College of Arts and Sciences
open access

Complexity matching in neural networks

Description: This article adopts the complexity matching principle that the maximal efficiency of communication between two complex networks is realized when both of them are at criticality, and uses this principle to establish the value of the neuronal interaction strength at which criticality occurs.
Date: January 9, 2015
Creator: Mafahim, Javad Usefie; Lambert, David; Zare, Marzieh & Grigolini, Paolo
Partner: UNT College of Arts and Sciences
open access

Ion exchanger in the brain: Quantitative analysis of perineuronally fixed anionic binding sites suggests diffusion barriers with ion sorting properties

Description: This article proposes that fixed charge-densities in the brain are involved in regulating ion mobility, the volume fraction of extracellular space and the viscosity of matrix components.
Date: December 1, 2015
Creator: Morawski, Markus; Reinert, Tilo; Meyer-Klaucke, Wolfram; Wagner, Friedrich E.; Tröger, Wolfgang; Reinert, Anja et al.
Partner: UNT College of Arts and Sciences
open access

Holographic Fabrication of Designed Functional Defect Lines in Photonic Crystal Lattice Using a Spatial Light Modulator

Description: This article reports the holographic fabrication of designed defect lines in photonic crystal lattices through phase engineering using a spatial light modulator.
Date: April 1, 2016
Creator: Lutkenhaus, Jeffrey; Lowell, David; George, David; Zhang, Hualiang; Lin, Yuankun & Lin, Yuankun
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
open access

Resonant excitation of coupled Rayleigh waves in a short and narrow fluid channel clad between two identical metal plates

Description: This article studies the transmission of ultrasonic waves through a slit between two water immersed brass plates for sub-wavelength plate thicknesses and slit apertures.
Date: July 14, 2014
Creator: Garcia-Chocano, Victor M.; Lopez-Rios, Tomas; Krokhin, Arkadii A. & Sanchez-Dehesa, Jose
Partner: UNT College of Arts and Sciences
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