43 Matching Results

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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
Object Type: Article
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
Object Type: Article
System: The UNT Digital Library
Broadband light-matter interaction due to resonance cavities in graded photonic super-crystals (open access)

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
Edge-plasmon assisted electro-optical modulator (open access)

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
Anisotropic optical properties of single Si2Te3 nanoplates (open access)

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
Sub-wavelength lateral detection of tissue-approximating masses using an ultrasonic metamaterial lens (open access)

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
Using a Novel Approach to Estimate Packing Density and Related Electrical Resistance in Multiwall Carbon Nanotube Networks (open access)

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
Electrical Properties of Tin Selenide Under High-Pressure (open access)

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
All-acoustic signal modulation and logic operation via defect induced cavity effects in phononic crystal coupled-resonator acoustic waveguides (open access)

All-acoustic signal modulation and logic operation via defect induced cavity effects in phononic crystal coupled-resonator acoustic waveguides

Article describes experiment where a coupled resonant acoustic waveguide (CRAW) in a phononic crystal (PnC) was engineered to manipulate the propagation of ultrasonic waves within a conventional phononic bandgap for wavelength division multiplexing.
Date: November 6, 2019
Creator: Reyes, Delfino; Walker, Ezekiel; Zubov, Yurii; Heo, Hyeonu; Krokhin, Arkadii A. & Neogi, Arup
Object Type: Article
System: The UNT Digital Library
Towards Deep Integration of Electronics and Photonics (open access)

Towards Deep Integration of Electronics and Photonics

This is a review of applications of polariton modes related to the design and fabrication of electro-optical circuits. The emphasis is made on surface plasmon-polaritons which have already demonstrated their value in many fields of technology. Other possible quasiparticles as well as their hybridization with plasmons are discussed.
Date: November 12, 2019
Creator: Pshenichnyuk, Ivan A.; Kosolobov, Sergey S. & Drachev, Vladimir P.
Object Type: Article
System: The UNT Digital Library
Computational Topology Techniques Help To Solve A  Long-Lasting Forensic Dilemma: Aldo Moro's Death (open access)

Computational Topology Techniques Help To Solve A Long-Lasting Forensic Dilemma: Aldo Moro's Death

The article shows how a recently-introduced method from algebraic topology, namely proximal planar vortex 1-cycles, might be helpful in detecting hidden features of the shapes and holes in images, therefore contributing to the solution of both cold and fresh forensic cases. They apply this technique in a recent case, Aldo Moro's death.
Date: November 13, 2018
Creator: Peters, James F. & Tozzi, Arturo
Object Type: Article
System: The UNT Digital Library
Charged Particle Reflection by a Planar Artificially Structured Boundary With Electrostatic Plugging (open access)

Charged Particle Reflection by a Planar Artificially Structured Boundary With Electrostatic Plugging

This article uses a classical trajectory Monte Carlo simulation to investigate an artificially structured boundary for confinement and control of charged particles.
Date: November 30, 2017
Creator: Hedlof, R. M. & Ordonez, Carlos A.
Object Type: Article
System: The UNT Digital Library
Controlling Topological States in Topological/Normal Insulator Heterostructures (open access)

Controlling Topological States in Topological/Normal Insulator Heterostructures

This article contains a systematic investigation of the nature of the nontrivial interface states in topological/normal insulator (TI/NI) heterostructures.
Date: November 26, 2018
Creator: Costa, Marcio; Costa, Antônio T.; Freitas, Walter A.; Schmidt, Tome M.; Buongiorno Nardelli, Marco & Fazzio, Adalberto
Object Type: Article
System: The UNT Digital Library
Effects of Strategically Placed Water Droplets on Monolayer Growth of Molybdenum Disulfide (open access)

Effects of Strategically Placed Water Droplets on Monolayer Growth of Molybdenum Disulfide

This article presents results of molybdenum disulfide monolayer (MoS₂) growth by strategically placing water droplets on the growth substrate and/or in the source prior to its loading in the growth chamber.
Date: November 21, 2018
Creator: Jiang, Yan; Lin, Yuankun; Cui, Jingbiao & Philipose, Usha
Object Type: Article
System: The UNT Digital Library
Electrical properties of SnSe under high-pressure (open access)

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
Efficient multiband and broadband cross polarization converters based on slotted Lshaped nanoantennas (open access)

Efficient multiband and broadband cross polarization converters based on slotted Lshaped nanoantennas

This article presents highly efficient reflective cross polarization converters based on metamaterials operating in the infrared regime.
Date: November 14, 2014
Creator: Ding, Jun; Arigong, Bayaner; Ren, Han; Zhou, Mi; Shao, Jin; Lin, Yuankun et al.
Object Type: Article
System: The UNT Digital Library
Electric Field Enhanced Photoluminescence of CdTe Quantum Dots Encapsulated in Poly (N-Isopropylacrylamide) Nano-Spheres (open access)

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
Object Type: Article
System: The UNT Digital Library
Fast-Growing SMBHs in Fast-Growing Galaxies, at High Redshifts: The Role of Major Mergers as Revealed by ALMA (open access)

Fast-Growing SMBHs in Fast-Growing Galaxies, at High Redshifts: The Role of Major Mergers as Revealed by ALMA

This article presents a long-term, multi-wavelength project to understand the epoch of fastest growth of the most massive black holes by using a sample of 40 luminous quasars at z ≃ 4.8.
Date: September 30, 2017
Creator: Trakhtenbrot, Benny; Lira, Paulina; Netzer, Hagai; Cicone, Claudia; Maiolino, Roberto & Shemmer, Ohad
Object Type: Article
System: The UNT Digital Library
Long-Term X-Ray Variability of Typical Active Galactic Nuclei in the Distant Universe (open access)

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
Competition Between Resonant Plasmonic Coupling and Electrostatic Interaction in Reduced Graphene Oxide Quantum Dots (open access)

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
The Spectral Energy Distribution and Emission-Line Properties of the Narrow-Line Seyfert 1 Galaxy Arakelian 564 (open access)

The Spectral Energy Distribution and Emission-Line Properties of the Narrow-Line Seyfert 1 Galaxy Arakelian 564

This article presents the intrinsic spectral energy distribution of the narrow-line Seyfert 1 galaxy Ark 564, constructed with contemporaneous data obtained during a multiwavelength, multisatellite observing campaign in 2000 and 2001.
Date: November 7, 2003
Creator: Romano, P.; Mathur, S.; Turner, T.J.; Kraemer, S.B.; Crenshaw, D.M.; Peterson, Bradley M. et al.
Object Type: Article
System: The UNT Digital Library
Locating Star-Forming Regions in Quasar Host Galaxies (open access)

Locating Star-Forming Regions in Quasar Host Galaxies

This article presents a study of the morphology and intensity of star formation in the host galaxies of eight Palomar-Green quasars using observations with the Hubble Space Telescope.
Date: November 5, 2013
Creator: Young, Jason E.; Eracleous, Michael; Shemmer, Ohad; Netzer, Hagai; Gronwall, Caryl; Lutz, Dieter et al.
Object Type: Article
System: The UNT Digital Library
Toxic Agent Sensor and Detector Method, Apparatus, and System (open access)

Toxic Agent Sensor and Detector Method, Apparatus, and System

Patent relating to a toxic agent sensor and detector method, apparatus, and system.
Date: May 25, 2006
Creator: Henley, Donald E.; Anand, Aman; Imholt, Timothy & Roberts, James A.
Object Type: Patent
System: The UNT Digital Library
Use of Microwaves to Crosslink Carbon Nanotubes (open access)

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