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619 Matching Results
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Tracking molecular wave packets in cesium dimers by coherent Raman scattering
Article discussing tracking molecular wave packets in cesium dimers by coherent Raman scattering.
Date:
August 31, 2012
Creator:
Yuan, Luqi; Murawski, Robert K.; Ariunbold, Gombojav O.; Zhi, Miaochan; Wang, Xi; Sautenkov, Vladimir A. et al.
Object Type:
Article
System:
The UNT Digital Library
Trajectory versus probability density entropy
In this article, the authors show that the widely accepted conviction that a connection can be established between the probability density entropy and the Kolmogorov-Sinai (KS) entropy is questionable.
Date:
2001
Creator:
Bologna, Mauro; Grigolini, Paolo; Karagiorgis, Markos & Rosa, Angelo
Object Type:
Article
System:
The UNT Digital Library
Transmission of Information Between Complex Systems: 1/ f resonance
In this article, the authors study the transport of information between two complex systems with similar properties.
Date:
May 31, 2011
Creator:
Aquino, Gerardo; Bologna, Mauro; West, Bruce J. & Grigolini, Paolo
Object Type:
Article
System:
The UNT Digital Library
Triply Differential Measurements for Positron Impact Ionization of Argon
This article reports triply differential cross sections for positron impact ionization of argon.
Date:
September 7, 2015
Creator:
Mueller, D. W.; Knudsen, E. J.; Boadle, R.; Armitage, S.; Dorn, A.; Buckman, S. J. et al.
Object Type:
Article
System:
The UNT Digital Library
Tunable Hybrid Phononic Crystal Lens Using Thermo-Acoustic Polymers
Article describes a study where a tunable hybrid solid ultrasonic lens is realized by combining a PnC lens with PVA-PNIPAm thermoacoustic hydrogel to modify the transmission and dispersion properties of transient acoustic waves.
Date:
September 30, 2019
Creator:
Walker, Ezekiel; Reyes-Contreras, Delfino; Jin, Yuqi & Neogi, Arup
Object Type:
Article
System:
The UNT Digital Library
Tunable Polymer-Based Sonic Structures
Patent relating to methods and devices for controlling the propagation of sound and particularly to tunable polymer-based sonic structures.
Date:
November 14, 2013
Creator:
Walker, Ezekiel; Neogi, Arup & Cai, Tong
Object Type:
Patent
System:
The UNT Digital Library
Tuneable complementary metamaterial structures based on graphene for single and multiple transparency windows
Article describes a study examining novel graphene-based tunable plasmonic metamaterials featuring single and multiple transparency windows.
Date:
August 22, 2014
Creator:
Ding, Jun; Arigong, Bayaner; Ren, Han; Zhou, Mi; Shao, Jin; Lu, Meng et al.
Object Type:
Article
System:
The UNT Digital Library
Tuning the decay of sound in a viscous metamaterial
Authors of the article use analytical results for viscous dissipation in phononic crystals to calculate the decay coefficient of a sound wave propagating at low frequencies through a two-dimensional phononic crystal with a viscous fluid background. They claim that the decay coefficient exhibits dependence on the direction of propagation; that is, a homogenized phononic crystal behaves like an anisotropic viscous fluid.
Date:
October 10, 2022
Creator:
Ibarias, M.; Doporto, J.; Krokhin, Arkadii A. & Arriaga, J.
Object Type:
Article
System:
The UNT Digital Library
Tunneling rate fluctuations induced by nonlinear resonances: A quantitative treatment based on semiclassical arguments
This article discusses tunneling rate fluctuations induced by nonlinear resonances. The authors investigate the tunneling process between two symmetric stable islands of a forced pendulum Hamiltonian in the weak chaos regime.
Date:
November 1998
Creator:
Bonci, Luca; Farusi, Andrea; Grigolini, Paolo & Roncaglia, Roberto
Object Type:
Article
System:
The UNT Digital Library
Two-Layer High-Throughput: Effective Mass Calculations Including Warping
Article performing and analyzing two-layer high-throughput calculations.
Date:
February 26, 2022
Creator:
Supka, Andrew; Mecholsky, Nicholas A.; Buongiorno Nardelli, Marco; Curtarolo, Stefano & Fornari, Marco
Object Type:
Article
System:
The UNT Digital Library
Ultimate strength of carbon nanotubes: A theoretical study
Article on a theoretical study of the ultimate strength of carbon nanotubes.
Date:
March 27, 2002
Creator:
Zhao, Qingzhong; Buongiorno Nardelli, Marco & Bernholc, Jerry
Object Type:
Article
System:
The UNT Digital Library
Ultradispersive adaptive prism based on a coherently prepared atomic medium
Article on ultradispersive adaptive prism based on a coherently prepared atomic medium.
Date:
June 23, 2010
Creator:
Sautenkov, Vladimir A.; Li, Hebin; Rostovtsev, Yuri V. & Scully, Marlan O. (Marlan Orvil), 1939-
Object Type:
Article
System:
The UNT Digital Library
Ultrafast dephasing in hydrogen-bonded pyridine–water mixtures
Article studying Hydrogen-bonded pyridine–water mixtures by a time-frequency resolved coherent Raman spectroscopic technique.
Date:
May 4, 2021
Creator:
Ariunbold, Gombojav O.; Semon, Bryan; Nagpal, Supriya & Rostovtsev, Yuri V.
Object Type:
Article
System:
The UNT Digital Library
Ultrasound Imaging by Thermally Tunable Phononic Crystal Lens
This article demonstrates the detections and mappings of a solid object using a thermally tunable solid-state phononic crystal lens at low frequency for potential use in future long-distance detection.
Date:
July 26, 2021
Creator:
Jin, Yuqi & Neogi, Arup
Object Type:
Article
System:
The UNT Digital Library
The Ultraviolet-To-Mid-Infrared Spectral Energy Distribution of Weak Emission Line Quasars
This article presents Spitzer Space Telescope photometry of 18 Sloan Digital Sky Survey quasars which have weak or undetectable high-ionization emission lines in their rest-frame ultraviolet spectra.
Date:
September 23, 2011
Creator:
Lane, Ryan A.; Shemmer, Ohad; Diamond-Stanic, Aleksandar M.; Fan, Xiaohui; Anderson, Scott F.; Brandt, William Nielsen et al.
Object Type:
Article
System:
The UNT Digital Library
Uncoupling system and environment simulation cells for fast-scaling modeling of complex continuum embeddings
Article describes how continuum solvation models are becoming increasingly relevant in condensed matter simulations, allowing to characterize materials interfaces in the presence of wet electrified environments at a reduced computational cost with respect to all atomistic simulations. However, some challenges with the implementation of these models in plane-wave simulation packages still persists, and to address these challenges, the authors present the implementation of a double-cell formalism, in which the simulation cell used for the continuum environment is uncoupled from the one used for the electronic-structure simulation of the quantum-mechanical system.
Date:
August 1, 2023
Creator:
Medrano, G.; Bainglass, E. & Andreussi, O.
Object Type:
Article
System:
The UNT Digital Library
Undistorted 3D microstructures in SU8 formed through two-photon polymerization
This article presents the wavelength dependence of two-photon polymerization in SU-8 between 720-780 nm.
Date:
September 21, 2011
Creator:
Ohlinger, Kris; Lin, Yuankun; Poole, Zsolt & Chen, Kevin P.
Object Type:
Article
System:
The UNT Digital Library
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
A unified, contemporary approach to teaching energy in introductory physics
Article proposes a more coherent, contemporary approach to the teaching of energy in introductory physics courses that offers students a principled way to avoid confusions.
Date:
July 1, 2019
Creator:
Chabay, Ruth; Sherwood, Bruce & Titus, Aaron
Object Type:
Article
System:
The UNT Digital Library
The Universal Code
Poster presentation for the 2010 University Scholars Day at the University of North Texas discussing research on the universal code.
Date:
April 15, 2010
Creator:
Alvarado, Roberto & Kirk, Andrea B.
Object Type:
Poster
System:
The UNT Digital Library
The universal shape of the X-ray variability power spectrum of AGN up to z ∼ 3
Authors of the article assert that they studied the ensemble X-ray variability properties of active galactic nuclei (AGN) over large ranges of timescale (20 ks ≤ T ≤ 14 yr), redshift (0 ≤ z ≲ 3), luminosity (1040 erg s−1 ≤ LX ≤ 1046 erg s−1), and black hole (BH) mass (106 ≤ M⊙ ≤ 109). The authors show that the data collected from archival observations and previous literature studies are fully consistent with a universal PSD form, which does not show any evidence for systematic evolution of shape or amplitude with redshift or luminosity, even if there may be differences between individual AGN at a given redshift or luminosity.
Date:
May 8, 2023
Creator:
Paolillo, Maurizio; Papadakis, I.; Brandt, William Nielsen; Bauer, Franz E.; Lanzuisi, G.; Allevato, V. et al.
Object Type:
Article
System:
The UNT Digital Library
Unusual Mathematical Approaches Untangle Nervous Dynamics
Article reports that the massive amount of available neurodata suggests the existence of a mathematical backbone underlying neuronal oscillatory activities. The authors assert that the Monge’s theorem might contribute to our visual ability of depth perception and the brain connectome can be tackled in terms of tunnelling nanotubes.
Date:
October 14, 2022
Creator:
Tozzi, Arturo & Mariniello, Lucio
Object Type:
Article
System:
The UNT Digital Library
Use of Microwaves to Crosslink Carbon Nanotubes
Patent relating to the use of microwaves to crosslink carbon nanotubes.
Date:
December 17, 2003
Creator:
Tour, James M.; Stephenson, Jason J.; Imholt, Timothy; Dyke, Christopher A.; Yakobson, Boris I. & Roberts, James A.
Object Type:
Patent
System:
The UNT Digital Library
Using a Novel Approach to Estimate Packing Density and Related Electrical Resistance in Multiwall Carbon Nanotube Networks
Article using contrast image processing to estimate the concentration of multi-wall carbon nanotubes (MWCNT) in a given network.
Date:
September 25, 2020
Creator:
Philipose, Usha; Jiang, Yan; Farmer, Gavin; Howard, Chris; Harcrow, Michael; Littler, Chris et al.
Object Type:
Article
System:
The UNT Digital Library