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Terahertz spectroscopy of MOFs reveals dynamic structure and contact free ultrafast photoconductivity
Article describes how metal-organic frameworks (MOFs) are porous crystalline materials, and their large pores make them particularly interesting for membranes, gas separation, and gas storage. The authors discuss how gas-MOF interactions alter the MOFs' spectral fingerprints.
Date:
January 10, 2024
Creator:
Hamilton, Kendra & Neu, Jens
System:
The UNT Digital Library
Biophotons: New Experimental Data and Analysis
Article describes how biophotons are an ultra-weak emission of photons in the visible energy range from living matter. The authors study the emission from germinating seeds using an experimental technique designed to detect light of extremely small intensity.
Date:
October 10, 2023
Creator:
Benfatto, Maurizio; Pace, Elisabetta; Davoli, Ivan; Francini, Roberto; Matteis, Fabio De; Scordo, Alessandro et al.
System:
The UNT Digital Library
Shedding New Light on Weak Emission-Line Quasars in the CIV-Hβ Parameter Space
Article describes how weak emission-line quasars (WLQs) are a subset of Type 1 quasars that exhibit extremely weak Lyα+N V λ1240 and/or C IV λ1549 emission lines. The authors investigate the relationship between emission-line properties and accretion rate for a sample of 230 `ordinary' Type 1 quasars and 18 WLQs at z<0.5 and 1.5<z<3.5 that have rest-frame ultraviolet and optical spectral measurements.
Date:
April 10, 2023
Creator:
Ha, Trung; Dix, Cooper; Matthews, Brandon M.; Shemmer, Ohad; Brotherton, Michael S.; Myers, Adam D. et al.
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.
System:
The UNT Digital Library
Generation of over 1000 Diffraction Spots from 2D Graded Photonic Super-Crystals
Discusses a project in which researchers were able to generate over 1000 diffraction spots from a graded photonic super-crystal with a unit super-cell size of 12a × 12a where a is the lattice constant and hole radii are gradually changed in dual directions.
Date:
April 10, 2020
Creator:
Hassan, Safaa; Jiang, Yan; Alnasser, Khadijah; Hurley, Noah; Zhang, Hualiang; Philipose, Usha et al.
System:
The UNT Digital Library
Plasmonically-powered hot carrier induced modulation of light emission in a two-dimensional GaAs semiconductor quantum well
Article describes an experiment in which a hot-electron-enabled route to controlling light with dissipative loss compensation in semiconductor quantum light emitters has been realized for tunable quantum optoelectronic devices via a two-species plasmon system.
Date:
December 10, 2018
Creator:
Ashalley, Eric; Gryczynski, Karol; Wang, Zhiming; Salamo, Gregory & Neogi, Arup
System:
The UNT Digital Library
Exploratory X-Ray Monitoring of Luminous Radio-quiet Quasars at High Redshift: No Evidence for Evolution in X-Ray Variability
This article reports on the second installment of an X-ray monitoring project of seven luminous radio-quiet quasars (RQQs).
Date:
October 10, 2017
Creator:
Shemmer, Ohad; Brandt, William Nielsen; Paolillo, Maurizio; Kaspi, Shai; Vignali, Christian; Lira, Paulina et al.
System:
The UNT Digital Library
Effect of noise and detector sensitivity on a dynamical process: Inverse power law and Mittag-Leffler interevent time survival probabilities
Article on the effect of noise and detector sensitivity on a dynamical process and the inverse power law and Mittag-Leffler interevent time survival probabilities.
Date:
February 10, 2014
Creator:
Pramukkul, Pensri; Svenkeson, Adam & Grigolini, Paolo
System:
The UNT Digital Library
Energy Conversion During Expansion of a Solid-Particle-Entrained Gas
This article describes pneumatic energy being converted into solid particle kinetic energy as a solid-particle-entrained gas that flows downward through a vertical nozzle. For the conditions studied, the solid particles serve as a heat exchange medium to enable a gas expansion that is nearly isothermal. Also, the kinetic energy associated with the two-phase fluid is predominantly that associated with subsonic solid-particle motion. The kinetic energy of the solid particles is converted into other forms using a low-speed turbine. A theoretical description of the process is presented, and the initiation of an experimental effort to study the process is described.
Date:
January 10, 2013
Creator:
Ordonez, Carlos A.; Weathers, Duncan L. & Traum, Matthew J.
System:
The UNT Digital Library
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
System:
The UNT Digital Library
Experimental observation of carrier-envelope-phase effects by multicycle pulses
Article on experimental observation of carrier-envelope phase effect by multicycle pulses.
Date:
March 10, 2011
Creator:
Jha, Pankaj K.; Rostovtsev, Yuri V.; Li, Hebin; Sautenkov, Vladimir A. & Scully, Marlan O. (Marlan Orvil), 1939-
System:
The UNT Digital Library
Black Hole Mass and Growth Rate at z ≃4.8: A Short Episode of Fast Growth Followed by Short Duty Cycle Activity
This article presents H-band spectroscopy for a flux-limited sample of 40 z≃ 4.8 active galactic nuclei, selected from the Sloan Digital Sky Survey.
Date:
December 10, 2010
Creator:
Trakhtenbrot, Benny; Netzer, Hagai; Lira, Paulina & Shemmer, Ohad
System:
The UNT Digital Library
Holographically Formed Three-Dimensional Penrose-Type Photonic Quasicrystal Through a Lab-Made Single Diffractive Optical Element
This describes the use of a holographic lithography method to fabricate large-area three-dimensional Penrose-type photonic quasicrystals.
Date:
September 10, 2010
Creator:
Harb, Ahmad; Torres, Faraon; Ohlinger, Kris; Lin, Yuankun; Lozano, Karen; Xu, Di et al.
System:
The UNT Digital Library
Dynamics of Electroencephalogram Entropy and Pitfalls of Scaling Detection
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.
System:
The UNT Digital Library
Electric Field Enhanced Photoluminescence of CdTe Quantum Dots Encapsulated in Poly (N-Isopropylacrylamide) Nano-Spheres
This article shows an electric field dependent collapse of the poly(N-isopropylacramide) nanospheres and employs the electric field dependence as a means to adjust the photoluminescence process of the quantum dots in a hybrid material.
Date:
November 10, 2008
Creator:
Garner, Brett W.; Cai, Tong; Hu, Zhibing & Neogi, Arup
System:
The UNT Digital Library
Power spectra for both interrupted and perennial aging processes
Article on power spectra for both interrupted and perennial aging processes.
Date:
November 10, 2008
Creator:
Lukovic, Mirko & Grigolini, Paolo
System:
The UNT Digital Library
Correlation Function and Generalized Master Equation of Arbitrary Age
Article discussing research on correlation function and generalized master equation of arbitrary age.
Date:
June 10, 2005
Creator:
Allegrini, Paolo; Aquino, Gerardo; Grigolini, Paolo; Palatella, Luigi; Rosa, Angelo & West, Bruce J.
System:
The UNT Digital Library
Aging and Rejuvenation with Fractional Derivatives
This article discusses aging rejuvenation with fractional derivatives.
Date:
September 10, 2004
Creator:
Aquino, Gerardo; Bologna, Mauro; Grigolini, Paolo & West, Bruce J.
System:
The UNT Digital Library
Spontaneous polarization and piezoelectricity in boron nitride nanotubes
Article on spontaneous polarization and piezoelectricity in boron nitride nanotubes.
Date:
June 10, 2003
Creator:
Nakhmanson, Serge M.; Calzolari, Arrigo; Meunier, Vincent; Bernholc, Jerry & Buongiorno Nardelli, Marco
System:
The UNT Digital Library
Erratum: "Is there a metallicity-luminosity relationship in active galactic nuclei? The case of narrow-line Seyfert 1 galaxies"
This erratum corrects a computational error affecting the calculation of the intrinsic luminosities of several objects in the article "Is there a metallicity-luminosity relationship in active galactic nuclei? The case of narrow-line Seyfert 1 galaxies." This does not affect any of the main results of the article.
Date:
April 10, 2002
Creator:
Shemmer, Ohad & Netzer, Hagai
System:
The UNT Digital Library
O(N) real-space method for ab initio quantum transport calculations: Application to carbon nanotube - metal contacts
Article on O(N) real-space method for ab initio quantum transport calculations and application to carbon nanotube-metal contacts.
Date:
December 10, 2001
Creator:
Buongiorno Nardelli, Marco; Fattebert, Jean-luc & Bernholc, Jerry
System:
The UNT Digital Library