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Fe/GeTe(111) heterostructures as an avenue towards spintronics based on ferroelectric Rashba semiconductors
Article investigating the electronic structure of Fe/GeTe(111), a prototypical ferromagnetic/Rashba-ferroelectric interface, by performing density functional theory and Green's functions calculations complemented by x-ray photoemission spectroscopy.
Date:
February 19, 2019
Creator:
Sławińska, Jagoda; Di Sante, Domenico; Varotto, Sara; Rinaldi, Christian & Picozzi, Silvia
Object Type:
Article
System:
The UNT Digital Library
Persistent spin helix in Rashba-Dresselhaus ferroelectric CsBiNb2O7
Article reporting that CsBiNb₂O₇, a layered perovskite of Dion-Jacobson type, is a robust ferroelectric with sufficiently strong spin-orbit coupling and spin texture reversible by electric field. The study reveals that its topmost valence band's spin texture is quasi-independent from the momentum, as a result of the low symmetry of its ferroelectric phase. The peculiar spin-polarization pattern in the momentum space may yield the so-called “persistent spin helix,” a specific spin-wave mode which protects the spin from decoherence in the diffusive transport regime, potentially ensuring a very long spin lifetime in this material.
Date:
August 19, 2019
Creator:
Sławińska, Jagoda; Autieri, Carmine; Barone, Paolo & Picozzi, Silvia
Object Type:
Article
System:
The UNT Digital Library
Electrically tunable, sustainable, and erasable broadband light absorption in graphene sandwiched in Al2O3 oxides
This article is a study of graphene as an electrically tunable material for switchable devices. Graphene is obtained from graphene oxide during the atomic layer deposition of Al2O3, as confirmed by Raman spectrum.
Date:
November 15, 2018
Creator:
Adewole, Murthada; Cui, Jingbiao; Lowell, David; Hassan, Safaa; Jiang, Yan; Singh, Abhay et al.
Object Type:
Article
System:
The UNT Digital Library
Absorption and emission modulation in a MoS2–GaN (0001) heterostructure by interface phonon–exciton coupling
Article reporting the change in the transient absorption characteristics of monolayer MoS2 and the modified PL emission characteristics in a monolayer MoS2–GaN (0001) heterostructure due to the coupling of carriers with the phonon modes and the energy exchange at the interface. The results demonstrate the relevance of interface coupling between the semiconductors for the development of optical and electronic applications.
Date:
September 26, 2019
Creator:
Poudel, Yuba; Sławińska, Jagoda; Gopal, Priya; Seetharaman, Sairaman; Hennighausen, Zachariah; Kar, Swastik et al.
Object Type:
Article
System:
The UNT Digital Library
Thermally Tunable Dynamic and Static Elastic Properties of Hydrogel Due to Volumetric Phase Transition
Article studying the temperature dependence of the mechanical properties of polyvinyl alcohol-based poly n-isopropyl acrylamide (PVA-PNIPAm) hydrogel from the static and dynamic bulk modulus of the material.
Date:
June 30, 2020
Creator:
Jin, Yuqi; Yang, Teng; Ju, Shuai; Zhang, Haifeng; Choi, Tae-Youl & Neogi, Arup
Object Type:
Article
System:
The UNT Digital Library
Multitask deep-learning-based design of chiral plasmonic metamaterials
This article presents an end-to-end functional bidirectional deep-learning (DL) model for three-dimensional chiral metamaterial design and optimization. This ML model utilizes multitask joint learning features to recognize, generalize, and explore in detail the nontrivial relationship between the metamaterials’ geometry and their chiroptical response, eliminating the need for auxiliary networks or equivalent approaches to stabilize the physically relevant output. This model efficiently realizes both forward and inverse retrieval tasks with great precision, offering a promising tool for iterative computational design tasks in complex physical systems. Other potential applications include photodetectors, polarization-resolved imaging, and circular dichroism (CD) spectroscopy.
Date:
July 1, 2020
Creator:
Ashalley, Eric; Acheampong, Kingsley; Besteiro, Lucas V.; Yu, Peng; Neogi, Arup; Govorov, Alexander O. et al.
Object Type:
Article
System:
The UNT Digital Library
Sub-wavelength lateral detection of tissue-approximating masses using an ultrasonic metamaterial lens
Article demonstrating a phononic metamaterial lens (ML) for detection of laterally subwavelength object features in tissue-like phantoms beyond the phononic crystal evanescent zone and Fresnel zone of the emitter.
Date:
November 24, 2020
Creator:
Walker, Ezekiel; Jin, Yuqi; Reyes, Delfino & Neogi, Arup
Object Type:
Article
System:
The UNT Digital Library
Anisotropic optical properties of single Si2Te3 nanoplates
Article reporting a combined experimental and computational study of the optical properties of individual silicon telluride (Si2Te3) nanoplates.
Date:
November 5, 2020
Creator:
Chen, Jiyang; Bhattarai, Romakanta; Cui, Jingbiao; Shen, Xiao & Hoang, Thang
Object Type:
Article
System:
The UNT Digital Library
Manufacturing and Characterization of Hybrid Bulk Voxelated Biomaterials Printed by Digital Anatomy 3D Printing
This article proposes non-destructive ultrasound effective density and bulk modulus imaging to evaluate 3D voxelated materials printed by J750 Digital Anatomy 3D Printer of Stratasys. This method provides the design map of voxelated materials and substantially broadens the applications of 3D digital printing in the clinical research area.
Date:
December 30, 2020
Creator:
Heo, Hyeonu; Jin, Yuqi; Yang, David; Wier, Christopher; Minard, Aaron; Dahotre, Narendra B. et al.
Object Type:
Article
System:
The UNT Digital Library
Sub-Diffraction-Limit Imaging System with two Interfacing Hyperbolic Metamaterials
Article demonstrating that a system of two interfacing hyperbolic metamaterials may be used for direct subwavelength imaging in the visible range.
Date:
October 27, 2021
Creator:
Bronnikov, Kirill; Arriaga, J.; Krokhin, Arkadii A. & Drachev, Vladimir P.
Object Type:
Article
System:
The UNT Digital Library
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
Object Type:
Article
System:
The UNT Digital Library
Connecting Galaxies and Supermassive Black Holes: Meso-scale Simulations of Multiphase Accretion Flows
Data management plan for the grant, "Connecting Galaxies and Supermassive Black Holes: Meso-scale Simulations of Multiphase Accretion Flows." It proposes to study how gas flows onto the supermassive black holes in massive galaxies and galaxy clusters. They will perform numerical simulations with a nested zoom-in technique, focusing on the mesoscale accretion flows from the Bondi radius to hundreds of Schwarzschild radii. They will predict the mass flux of different phases, as well as their angular momentum and magnetic flux.
Date:
2022-07-01/2025-06-30
Creator:
Li, Yuan
Object Type:
Text
System:
The UNT Digital Library
Novel 2D Dynamic Elasticity Maps for Inspection of Anisotropic Properties in Fused Deposition Modeling Objects
Article introducing a novel ultrasonic non-destructive and non-invasive elastography method demonstrated to evaluate the mechanical properties of fused deposition modeling 3D printed objects using two-dimensional dynamical elasticity mapping. Based on the recently investigated dynamic bulk modulus and effective density imaging technique, an angle-dependent dynamic shear modulus measurement was performed to extract the dynamic Young’s modulus distribution of the FDM structures. The elastographic image analysis demonstrated the presence of anisotropic dynamic shear modulus and dynamic Young’s modulus existing in the fused deposition modeling 3D printed objects. The non-destructive method also differentiated samples with high contrast property zones from that of low contrast property regions. The angle-dependent elasticity contrast behavior from the ultrasonic method was compared with conventional and static tensile tests characterization. A good correlation between the nondestructive technique and the tensile test measurements was observed.
Date:
August 30, 2020
Creator:
Jin, Yuqi; Yang, Teng; Heo, Hyeonu; Krokhin, Arkadii A.; Shi, Sheldon; Dahotre, Narendra B. et al.
Object Type:
Article
System:
The UNT Digital Library
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
Object Type:
Article
System:
The UNT Digital Library
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.
Object Type:
Article
System:
The UNT Digital Library
Edge-plasmon assisted electro-optical modulator
Article demonstrates an efficient electro-optical modulation by using an edge-plasmon mode specific for the hybrid plasmonic waveguide.
Date:
November 26, 2019
Creator:
Drachev, Vladimir P.; Pshenichnyuk, Ivan A.; Nazarikov, Gleb I.; Kosolobov, Sergey S. & Maimistov, Andrei I.
Object Type:
Article
System:
The UNT Digital Library
AFLOW-QHA3P: Robust and automated method to compute thermodynamic properties of solids
Article introducing the quasiharmonic approximation three-phonon method to calculate the thermodynamic properties of both nonmetallic and metallic compounds. This study demonstrates that QHA3P is an ideal framework for the high-throughput prediction of finite-temperature material properties, combining the accuracy of QHA with the computational efficiency of SC-QHA.
Date:
July 8, 2019
Creator:
Nath, Pinku; Usanmaz, Demet; Hicks, David; Oses, Corey; Fornari, Marco; Buongiorno Nardelli, Marco et al.
Object Type:
Article
System:
The UNT Digital Library
Broadband light-matter interaction due to resonance cavities in graded photonic super-crystals
This article reports the formation of resonance cavities within graded photonic super-crystals (GPSCs) with unit cells formed via a near-uniform central region with eight side graded regions.
Date:
August 29, 2019
Creator:
Lin, Yuankun; Hassan, Safaa; Sale, Oliver; Alnasser, Khadijah; Hurley, Noah; Zhang, Hualiang et al.
Object Type:
Article
System:
The UNT Digital Library
Role of quantum confinement and interlayer coupling in CrI3-graphene magnetic tunnel junctions
Article presents a combination of first principles and quantum ballistic transport calculations to shed important insights from an atomistic viewpoint on the underlying mechanisms governing spin transport in graphene/ CrI₃ junctions.
Date:
May 29, 2020
Creator:
Buongiorno Nardelli, Marco; Heath, Jonathan J.; Costa, Marcio & Kuroda, Marcelo A.
Object Type:
Article
System:
The UNT Digital Library
Probability flux as a method for detecting scaling
Paper on probability flux as a method for detecting scaling.
Date:
April 5, 2010
Creator:
Ignaccolo, Massimiliano; Grigolini, Paolo & West, Bruce J.
Object Type:
Paper
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
Evolutionary models of lateralization: Steps toward stigmergy?
Article discusses an interesting approach to accounting for brain and behavioral asymmetry based on competition and cooperation in phenotypically asymmetric individuals. The model in question shows, in an almost fully analytical way, that under proper conditions, there exists an unequal number of equilibrium of left-and right-lateralized individuals.
Date:
February 2, 2023
Creator:
Tonello, Lucio & Vallortigara, Giorgio
Object Type:
Article
System:
The UNT Digital Library
Exploring thermal properties of nanoscale wide bandgap semiconductors via ultrafast thermal-emission spectroscopy
Data management plan for the grant, "Exploring thermal properties of nanoscale wide bandgap semiconductors via ultrafast thermal-emission spectroscopy." In this project, we aim to develop a new thermometrology technique based on ultrafast thermal emission to directly and accurately measure thermal properties of thin-film wide bandgap semiconductors.
Date:
2023-09-30/2025-09-29
Creator:
Xiao, Yuzhe
Object Type:
Text
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