Giant spin Hall effect in two-dimensional monochalcogenides (open access)

Giant spin Hall effect in two-dimensional monochalcogenides

This article, using calculations from first principles, reveals for the first time giant intrinsic spin Hall conductivities (SHC) in these materials. In particular, the article shows that the SHC resonances can be easily tuned by combination of strain and doping and, in some cases, strain can be used to induce semiconductor to metal transition that makes a giant spin Hall effect possible even in absence of doping.
Date: October 30, 2018
Creator: Sławińska, Jagoda; Cerasoli, Frank T.; Wang, Haihang; Postorino, Sara; Supka, Andrew; Curtarolo, Stefano et al.
System: The UNT Digital Library
Gold Nanoparticles-enabled Efficient Dual Delivery of Anticancer Therapeutics to HeLa Cells (open access)

Gold Nanoparticles-enabled Efficient Dual Delivery of Anticancer Therapeutics to HeLa Cells

This article describes a facile one-step method to synthesize stable collodial gold nanoparticles (AuNPs) loaded with a combination of two anticancer therapeutics, -bleomycin and doxorubicin
Date: September 20, 2017
Creator: Farooq, Muhammad U.; Novosad, Valentyn; Rozhkova, Elena A.; Wali, Hussain; Ali, Asghar; Fateh, Ahmed A. et al.
System: The UNT Digital Library
Grand canonical simulations of electrochemical interfaces in implicit solvation models (open access)

Grand canonical simulations of electrochemical interfaces in implicit solvation models

Article discussing grand canonical simulations based on density-functional theory to study the thermodynamic properties of electrochemical interfaces of metallic electrodes in aqueous environments.
Date: August 31, 2018
Creator: Hörmann, Nicolas; Andreussi, Oliviero & Marzari, Nicola
System: The UNT Digital Library
Growth of Highly-Ordered Metal Nanoparticle Arrays in the Dimpled Pores of an Anodic Aluminum Oxide Template (open access)

Growth of Highly-Ordered Metal Nanoparticle Arrays in the Dimpled Pores of an Anodic Aluminum Oxide Template

Article presents a reliable, scalable, and inexpensive technology for the fabrication of ordered arrays of metal nanoparticles with large areal coverage on various substrates. Using a simple model, the experimental results were interpreted and supported by numerical estimations.
Date: November 8, 2022
Creator: Farmer, Gavin; Abraham, James; Littler, Chris; Syllaios, A. J. & Philipose, Usha
System: The UNT Digital Library
High-redshift AGN in the Chandra Deep Fields: the obscured fraction and space density of the sub-L∗ population (open access)

High-redshift AGN in the Chandra Deep Fields: the obscured fraction and space density of the sub-L∗ population

This article investigates the population of high-redshift (3≤z<6) active galactic nuclei (AGN) selected in the two deepest X-ray surveys, the 7 Ms Chandra Deep Field-South and 2 Ms Chandra Deep Field-North.
Date: September 26, 2017
Creator: Vito, F.; Brandt, William Nielsen; Yang, G.; Gilli, Roberto; Luo, Bin; Vignali, Christian et al.
System: The UNT Digital Library
High-Throughput Computational Search for Half-Metallic Oxides (open access)

High-Throughput Computational Search for Half-Metallic Oxides

The article describes a high-throughput computational search for half-metallic compounds. The analysis of calculated electronic properties of thousands of materials from the inorganic crystal structure database allowed the authors to identify potential half metals. They found over two-hundred strong half-metallic oxides; several of them have never been reported before.
Date: April 25, 2020
Creator: Liyanage, Laalitha S. I.; Slawińska, Jagoda; Gopal, Priya; Curtarolo, Stefano; Fornari, Marco & Buongiorno Nardelli, Marco
System: The UNT Digital Library
Holographic Fabrication of 3D Moiré Photonic Crystals Using Circularly Polarized Laser Beams and a Spatial Light Modulator (open access)

Holographic Fabrication of 3D Moiré Photonic Crystals Using Circularly Polarized Laser Beams and a Spatial Light Modulator

The authors of the article state that holographic fabrication of a 3D moiré photonic crystal is very difficult due to the coexistence of the bright and dark regions, where the exposure threshold is suitable for one region but not for the other. In this paper, the authors study the holographic fabrication of 3D moiré photonic crystals using an integrated system of a single reflective optical element (ROE) and a spatial light modulator (SLM) where nine beams (four inner beams + four outer beams + central beam) are overlapped.
Date: June 9, 2023
Creator: Hurley, Noah; Kamau, Steve; Cui, Jingbiao & Lin, Yuankun
System: The UNT Digital Library
Ice imaging in aircraft anti-icing fluid films using polarized light (open access)

Ice imaging in aircraft anti-icing fluid films using polarized light

Article presents how to enhance ice contrast in the visible spectrum by using ice birefringence and polarized light reflection. The method can be used for both visual inspection and automatic ice detection systems.
Date: December 13, 2021
Creator: Grishaev, Viktor G.; Usachev, Igor A.; Drachev, Vladimir P.; Gattarov, Ramil K.; Rudenko, Nadezhda I.; Amirfazli, Alidad et al.
System: The UNT Digital Library
Influence of coherent population trapping on Raman scattering (open access)

Influence of coherent population trapping on Raman scattering

Article considering the Raman scattering in molecular media. Applying two laser fields in a two-photon resonance with vibrational transition, the authors study the role of rotational levels for excitation of vibrational coherence. It is shown that the molecular vibrational coherence strongly depends on the effect of coherent population trapping for rotational levels. The obtained results are important for applications of Raman spectroscopy to molecular detection in engineering, chemical, and biological applications.
Date: August 8, 2019
Creator: Singh, Pooja; Rostovtsev, Yuri V.; Patnaik, Anil K.; Roy, Sukesh & Gord, James R.
System: The UNT Digital Library
Influence of Tools and Cutting Strategy on Milling Conditions and Quality of Horizontal Thin-Wall Structures of Titanium Alloy Ti6Al4V (open access)

Influence of Tools and Cutting Strategy on Milling Conditions and Quality of Horizontal Thin-Wall Structures of Titanium Alloy Ti6Al4V

Article describes how titanium and nickel alloys are used in the creation of components exposed to harsh and variable operating conditions. The authors state that a search is underway for cutting parameters that will minimize the vibration while meeting the quality requirements.
Date: December 18, 2023
Creator: Kurpiel, Szymon; Cudok, Bartosz; Zagórski, Krzysztof; Cieślik, Jacek; Skrzypkowski, Krzysztof & Brostow, Witold, 1934-
System: The UNT Digital Library
Interface chemistry and leakage current mechanism of HfGdON/Ge gate stack modulated by ALD-driven interlayer (open access)

Interface chemistry and leakage current mechanism of HfGdON/Ge gate stack modulated by ALD-driven interlayer

Article describes an experiment in which a Ge metal-oxide-semiconductor (MOS) capacitor based on HfGdON/Ge gate stacks with an ALD-driven passivation layer was fabricated, and compares it's interfacial and electrical properties with those of its counterparts that have not undergone passivation treatment.
Date: October 21, 2019
Creator: He, Gang; Wang, Die; Ma, Rui; Liu, Mao & Cui, Jingbiao
System: The UNT Digital Library
Label-free characterization of white blood cells using fluorescence lifetime imaging and flow-cytometry: molecular heterogeneity and erythrophagocytosis [Invited] (open access)

Label-free characterization of white blood cells using fluorescence lifetime imaging and flow-cytometry: molecular heterogeneity and erythrophagocytosis [Invited]

Article reporting the results of blood cell characterization using label-free fluorescence imaging techniques and flow-cytometry. Autofluorescence parameters of different cell types – white blood cells, red blood cells, erythrophagocytic cells – are assessed and analyzed in terms of molecular heterogeneity and possibilities of differentiation between different cell types in vitro and in vivo.
Date: July 29, 2019
Creator: Drachev, Vladimir P.; Yakimov, Boris P.; Gogoleva, Maria A.; Semenov, Alexey N.; Rodionov, Sergey A.; Novoselova, Marina V. et al.
System: The UNT Digital Library
Lattice quantum magnetometry (open access)

Lattice quantum magnetometry

Article presenting the idea of lattice quantum magnetometry, i.e., quantum sensing of magnetic fields by a charged (spinless) particle placed on a finite two-dimensional lattice.
Date: June 24, 2019
Creator: Razzoli, Luca; Ghirardi, Luca; Siloi, Ilaria; Bordone, Paolo & Paris, Matteo G. A.
System: The UNT Digital Library
Long-range current-induced spin accumulation in chiral crystals (open access)

Long-range current-induced spin accumulation in chiral crystals

Article states that chiral materials, similarly to human hands, have distinguishable right-handed and left-handed enantiomers which may behave differently in response to external stimuli, so for the first time the authors use an approach based on the density functional theory (DFT)+PAOFLOW calculations to quantitatively estimate the so-called collinear Rashba–Edelstein effect (REE) that generates spin accumulation parallel to charge current and can manifest as chirality-dependent charge-to-spin conversion in chiral crystals. The authors reveal that the spin accumulation induced in the bulk by an electric current is intrinsically protected by the quasi-persistent spin helix arising from the crystal symmetries present in chiral systems with the Weyl spin–orbit coupling.
Date: November 18, 2022
Creator: Roy, Arunesh; Cerasoli, Frank T.; Jayaraj, Anooja; Tenzin, Karma; Buongiorno Nardelli, Marco & Sławińska, Jagoda
System: The UNT Digital Library
Long-range nonspreading propagation of sound beam through periodic layered structure (open access)

Long-range nonspreading propagation of sound beam through periodic layered structure

Article analyzing dispersion of sound in a solid-fluid layered structure and found a flex point on the isofrequency curve where D vanishes for given direction of propagation and frequency. Nonspreading propagation is experimentally observed in a water steel lattice of 75 periods (~1 meter long) and occurs in the regime of anomalous dispersion and strong acoustic anisotropy when the effective mass along periodicity is close to zero. Under these conditions the incoming beam experiences negative refraction of phase velocity leading to backward wave propagation. The observed effect is explained using a complete set of dynamical equations and our effective medium theory.
Date: September 2, 2020
Creator: Zubov, Yurii; Djafari-Rouhani, Bahram; Jin, Yuqi; Sofield, Mathew; Walker, Ezekiel; Neogi, Arup et al.
System: The UNT Digital Library
Low-energy positron interactions with xenon (open access)

Low-energy positron interactions with xenon

This article studies low-energy interactions of positrons with xenon experimentally and theoretically. Results are compared with previous literature.
Date: December 8, 2011
Creator: Machacek, J. R.; Makochekanwa, C.; Jones, A.C.L.; Caradonna, P.; Slaughter, D.S.; McEachran, R.P. et al.
System: The UNT Digital Library
Low-temperature UV photoluminescence of ion beam synthesized Si nanoclusters embedded in Si (open access)

Low-temperature UV photoluminescence of ion beam synthesized Si nanoclusters embedded in Si

This article explores Ultraviolet (UV) photoluminescence (PL) data taken on a double Au implanted Si matrix and studied over a wide temperature range of 28-220K. The results of this study at lower temperatures indicate the emission to be coming from Si nanoclusters (NCs) embedded in the matrix.
Date: April 3, 2012
Creator: Sahu, G.; Lenka, H.P.; Mahapatra, Durga P.; Rout, B. & Das, M.P.
System: The UNT Digital Library
Magnetic confinement of effectively unmagnetized plasma particles (open access)

Magnetic confinement of effectively unmagnetized plasma particles

Article develops a planar model for an artificially structured boundary that may provide magnetic confinement of nonmagnetically trapped plasma particles.
Date: December 1, 2020
Creator: Ordonez, Carlos A.
System: The UNT Digital Library
Magnetic plasma expulsion (open access)

Magnetic plasma expulsion

The article presents one scheme for what is referred to as magnetic plasma expulsion, which would prevent the plasma from entering a given region. Magnetic plasma expulsion techniques may allow instrumentation access to the interiors of plasmas. Magnetic plasma expulsion techniques may also make alternative approaches for magnetic plasma confinement possible. Particle-in-cell simulation with the Warp code is used to study magnetic plasma expulsion. Some conditions for achieving magnetic plasma expulsion are reported.
Date: January 16, 2018
Creator: Phillips, R. E. & Ordonez, Carlos A.
System: The UNT Digital Library
Mechanical Properties of Chemically Modified Clay (open access)

Mechanical Properties of Chemically Modified Clay

Article uses first principles methods to compare the mechanical properties of lizardite Mg3(Si2O5)(OH)4, a polymorph of serpentine family, with the new compounds derived by substituting Mg ions with isovalent elements from different chemical groups.
Date: September 23, 2019
Creator: Gusmão, M. S.; Gopal, Priya; Siloi, Ilaria; Curtarolo, Stefano; Fornari, Marco & Buongiorno Nardelli, Marco
System: The UNT Digital Library
Meditation-Induced Coherence and Crucial Events (open access)

Meditation-Induced Coherence and Crucial Events

This article emphasizes that 1/f noise has two different origins, one compatible with Laplace determinism and one determined by unpredictable crucial events.
Date: May 29, 2018
Creator: Tuladhar, Rohisha; Bohara, Gyanendra; Grigolini, Paolo & West, Bruce J.
System: The UNT Digital Library
Mimicking the collective intelligence of human groups as an optimization tool for complex problems (open access)

Mimicking the collective intelligence of human groups as an optimization tool for complex problems

This article presents a novel optimization algorithm belonging to the class of swarm intelligence optimization methods.
Date: April 4, 2018
Creator: De Vincenzo, Ilario; Massari, Giovanni F.; Giannoccaro, Ilaria; Carbone, Giuseppe & Grigolini, Paolo
System: The UNT Digital Library
A Miniature Permanent Magnet Assembly with Localized and Uniform Field with an Application to Optical Pumping of Helium (open access)

A Miniature Permanent Magnet Assembly with Localized and Uniform Field with an Application to Optical Pumping of Helium

Article using simulations and experimental measurements to design, build, and test a compact and uniform magnetic field source and then apply it to the optical pumping of atomic helium.
Date: September 24, 2021
Creator: Cameron, Garnet; Cuevas, Jonathan; Pound, Jeffrey Jr. & Shiner, David
System: The UNT Digital Library
Momentum-Space Spin Antivortex and Spin Transport in Monolayer Pb (open access)

Momentum-Space Spin Antivortex and Spin Transport in Monolayer Pb

This article finds a nontrivial spin texture, spin antivortex, can appear at certain momenta on the Γ− K line in a 2D monolayer Pb on top of SiC.
Date: April 21, 2022
Creator: Yang, Kaijie; Wang, Yuanxi & Liu, Chao-Xing
System: The UNT Digital Library