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Degree Department
22 Matching Results
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Electrical properties of SnSe under high-pressure
This article investigates the pressure-induced phase transitions in SnSe using the first-principles density functional calculations.
Date:
November 3, 2016
Creator:
Ghosh, Angsula; Gusmão, M. S.; Chaudhuri, Puspitapallab; de Souza, S. Michielon; Mota, Cicero; Trichês, D. M. et al.
Object Type:
Article
System:
The UNT Digital Library
Laser Ablated Carbon Nanodots for Light Emission
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.
Object Type:
Article
System:
The UNT Digital Library
Competition Between Resonant Plasmonic Coupling and Electrostatic Interaction in Reduced Graphene Oxide Quantum Dots
This article presents a study of the plasmonic interaction that effects the optical properties of light emission from graphene oxide system.
Date:
November 22, 2016
Creator:
Karna, Sanjya; Mahat, M.; Choi, Tae-Youl; Shimada, Ryoko; Wang, Zhiming & Neogi, Arup
Object Type:
Article
System:
The UNT Digital Library
Confinement of antiprotons in the electrostatic space charge of positrons in a model of the ALPHA antihydrogen trap
This article details the equilibrium of a positron plasma in a model of the ALPHA apparatus that is computed using a finite-difference method. The positron plasma in the model extends to axial magnetic mirrors in absence of an octupole field. Formation of a three-dimensional electrostatic potential well is found to occur self-consistently. Well depths under various conditions are evaluated. Also, the equilibrium with an antiproton plasma confined in the potential well is computed.
Date:
March 17, 2016
Creator:
Lane, Ryan A. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Holographic Fabrication of Designed Functional Defect Lines in Photonic Crystal Lattice Using a Spatial Light Modulator
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
Object Type:
Article
System:
The UNT Digital Library
Flexible Holographic Fabrication of 3D Photonic Crystal Templates with Polarization Control through a 3D Printed Reflective Optical Element
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.
Object Type:
Article
System:
The UNT Digital Library
A Symmetric Approach Elucidates Multisensory Information Integration
This article shows that the Borsuk-Ulam theorem applies also to multisensory integration: two environmental stimuli from different sensory modalities display similar features when mapped into cortical neurons.
Date:
December 27, 2016
Creator:
Tozzi, Arturo & Peters, James F.
Object Type:
Article
System:
The UNT Digital Library
A New Way to Understand and Address Women’s Health in the Context of Complex Systems: Self-organizing Criticality
Article proposes applying concepts from nonlinear science developed and employed by physicists, economists, and meteorologists to women's health issues.
Date:
January 1, 2016
Creator:
Mancuso, Peggy; Liu, Fuqin; Restrepo, Elizabeth; Hamilton, Patricia; Grigolini, Paolo & Zou, Lin
Object Type:
Article
System:
The UNT Digital Library
A New Way to Understand and Address Women's Health in the Context of Complex Systems: Self-organizing Criticality
This article examines how self-organizing criticality can assist in answering complex questions in health and health care systems.
Date:
January 1, 2016
Creator:
Mancuso, Peggy; Liu, Fuqin; Restrepo, Elizabeth; Hamilton, Patricia; Grigolini, Paolo & Zou, Lin
Object Type:
Article
System:
The UNT Digital Library
Electrical Properties of Tin Selenide Under High-Pressure
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.
Object Type:
Article
System:
The UNT Digital Library
Antihydrogen Synthesis Via Magnetobound States of Protonium Within Proton-Positron-Antiproton Plasmas
Article studies the possibility that antihydrogen can be synthesized via three body recombination involving magnetobound protonium through classical trajectory simulation. It has been previously reported that proton antiproton collisions can result in a correlated drift of the particles perpendicular to a magnetic field. While the two particles are in their correlated drift, they are referred to as a magnetobound protonium system. Possible three body recombination resulting in bound state antihydrogen is studied when a magnetobound protonium system encounters a positron.
Date:
July 2016
Creator:
Hermosillo, M. & Ordonez, Carlos A.
Object Type:
Article
System:
The UNT Digital Library
Effect of a finite antiproton mass on antihydrogen synthesis via magnetobound positronium within electron-positron-antiproton plasmas
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.
Object Type:
Article
System:
The UNT Digital Library
Effects of light on the resistivity of chemical vapor deposited graphene films
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.
Object Type:
Article
System:
The UNT Digital Library
The Deepest X-Ray View of High-Redshift Galaxies: Constraints on Low-Rate Black Hole Accretion
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.
Object Type:
Article
System:
The UNT Digital Library
The Evolution of Normal Galaxy X-Ray Emission Through Cosmic History: Constraints from the 6 Ms Chandra Deep Field-South
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.
Object Type:
Article
System:
The UNT Digital Library
The Chandra Deep Field-South Survey: 7 Ms Source Catalogs
This article presents X-ray source catalogs for the ≈7 Ms exposure of the Chandra Deep Field-South (CF-S), which covers a total area of 484.2 arcmin².
Date:
June 24, 2016
Creator:
Luo, Bin; Brandt, William Nielsen; Xue, Yongquan; Lehmer, Bret; Alexander, David M.; Bauer, Franz E. et al.
Object Type:
Article
System:
The UNT Digital Library
Ergodicity breaking and localization
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
Object Type:
Article
System:
The UNT Digital Library
Long-Term X-Ray Variability of Typical Active Galactic Nuclei in the Distant Universe
This article discusses the long-term (≈15 years, observed frame) X-ray variability analyses of the 68 brightest radio-quiet active galactic nuclei (AGNs) in the 6 Ms Chandra Deep Field-South survey.
Date:
November 3, 2016
Creator:
Yang, G.; Brandt, William Nielsen; Luo, Bin; Xue, Yongquan; Bauer, Franz E.; Sun, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Single Reflective Optical Element for Interference Lithography
Patent relating to optical elements for use in interference lithography.
Date:
August 1, 2014
Creator:
Lin, Yuankun; Lutkenhaus, Jeffrey & George, David
Object Type:
Patent
System:
The UNT Digital Library
Metallic Nanodroplet Induced Coulomb Catalysis for Off-Resonant Plasmonic Enhancement of Photoemission in Semiconductors
This article reports a new mechanism based on electrostatic interactions of carriers and their image charges in metals to generate more photons from optical sources at frequencies that are off-resonant to the localized plasmon frequency.
Date:
April 8, 2016
Creator:
Neogi, Arup; Grycznski, Karol G.; Llopis, A.; Lin, Jie; Main, Kyle; Shimada, Ryoko et al.
Object Type:
Article
System:
The UNT Digital Library
Suppression of coherent scattering by coherent population trapping on molecular vibrational levels
This article investigates the role of rotational levels.
Date:
December 4, 2016
Creator:
Singh, Pooja
Object Type:
Article
System:
The UNT Digital Library
Second-harmonic generation in a sphere
This article describes the optimal conditions for nonlinear generation in a sphere.
Date:
December 30, 2016
Creator:
Dhayal, Suman
Object Type:
Article
System:
The UNT Digital Library