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New mechanism of plasmons specific for spin-polarized nanoparticles
This article experimentally shows that Co nanoparticles with a single-domain crystal structure support a plasmon resonance at approximately 280 nm with better quality than gold nanoparticle resonance in the visible. The magnetic nature of these nanoparticles suggests a new type of these plasmons.
Date:
March 27, 2018
Creator:
Bhatta, Hari L.; Aliev, Abil E. & Drachev, Vladimir P.
System:
The UNT Digital Library
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
Entropy Balance in the Expanding Universe: A Novel Perspective
The article describes cosmic expansion as correlated with the standpoints of local observers’ co-moving horizons. In keeping with relational quantum mechanics, which claims that quantum systems are only meaningful in the context of measurements, the authors suggest that information gets ergodically “diluted” in our isotropic and homogeneous expanding Universe, so that an observer detects just a limited amount of the total cosmic bits.
Date:
April 17, 2019
Creator:
Tozzi, Arturo & Peters, James F.
System:
The UNT Digital Library
The Stability of Metallic MoS₂ Nanosheets and Their Property Change by Annealing
This article focuses on the effects of mild annealing on the structural and physical properties of the MoS₂ by heating the nanosheets in air and vacuum up to 350 °C. It was found that the annealing leads to an increase in resistivity for the nanosheets by 3 orders of magnitude, the appearance of two absorption bands in the visible range, and a hydrophilic to hydrophobic change in the surface wetting properties. Overall, this study provides another way to control the electrical, optical, and surface properties of MoS₂ nanosheets for fulfilling the needs of various applications.
Date:
September 24, 2019
Creator:
Li, Li; Chen, Jiyang; Wu, Keyue; Cao, Chunbin; Shi, Shiwei & Cui, Jingbiao
System:
The UNT Digital Library
Structure and Electronic Properties of InSb Nanowires Grown in Flexible Polycarbonate Membranes
The article explores the various factors that affect nucleation and nanowire growth. A dense array of vertically aligned indium antimonide (InSb) nanowires with high aspect ratio were grown in the pores of a track-etched polycarbonate membrane via a one-step electrochemical method.
Date:
September 5, 2019
Creator:
Singh, Abhay; Roccapriore, Kevin M.; Algarni, Zaina; Salloom, Riyadh; Golden, Teresa Diane, 1963- & Philipose, Usha
System:
The UNT Digital Library
Effects of Photonic Band Structure and Unit Super-Cell Size in Graded Photonic Super-Crystal on Broadband Light Absorption in Silicon
Examines the novel optical properties of a graded photonic super-crystal (GPSC) with a large size of unit cell.
Date:
May 9, 2019
Creator:
Hassan, Safaa; Alnasser, Khadijah; Lowell, David & Lin, Yuankun
System:
The UNT Digital Library
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.
System:
The UNT Digital Library
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
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
System:
The UNT Digital Library
Classical trajectory Monte Carlo simulation of plasma fueling using magnetic plasma expulsion
Article describes a study exploring the possibility of fueling a magnetically confined plasma using particle sources located inside of the plasma.
Date:
July 11, 2019
Creator:
Martinez, Armando & Ordonez, Carlos A.
System:
The UNT Digital Library
Maxwell-Wagner-Sillars Dynamics and Enhanced Radio-Frequency Elastomechanical Susceptibility in PNIPAm Hydrogel-KF-doped Barium Titanate Nanoparticle Composites
Article describes study investigating Maxwell-Wagner-Sillars (MWS) dynamics and electromagnetic radio-frequency (RF) actuation of the volumetric phase change in a hybrid polymer composite consisting of hydrogel suspended with high-k nanoparticles.
Date:
December 19, 2019
Creator:
Walker, Ezekiel; Akishige, Yukikuni; Cai, Tong; Roberts, James A.; Shepherd, Nigel; Wu, Shijie et al.
System:
The UNT Digital Library
Coordination corrected ab initio formation enthalpies
Article proposes the “coordination corrected enthalpies” method (CCE), based on the number of nearest neighbor cation–anion bonds, and also capable of correcting relative stability of polymorphs.
Date:
May 15, 2019
Creator:
Friedrich, Rico; Usanmaz, Demet; Oses, Corey; Supka, Andrew; Fornari, Marco; Buongiorno Nardelli, Marco et al.
System:
The UNT Digital Library
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
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
System:
The UNT Digital Library
Absolute band alignment at semiconductor-water interfaces using explicit and implicit descriptions for liquid water
Article presents a rigorous and systematic study of the band alignment of semiconductors in aqueous solutions by contrasting a range of hybrid explicit/implicit models against explicit atomistic simulations based on density-functional theory.
Date:
October 11, 2019
Creator:
Hörmann, Nicolas; Guo, Zhendong; Ambrosio, Francesco; Andreussi, Oliviero; Pasquarello, Alfredo & Marzari, Nicola
System:
The UNT Digital Library
Electrostatic equilibria of non-neutral plasmas confined in a Penning trap with axially varying magnetic field
This article describes a procedure for computing the electrostatic equilibria of non-neutral plasmas in a Penning trap with a nonuniform magnetic field by solving Poisson's equation using an iterative method. Plasma equilibria in a model Penning trap with high and low field regions are computed. The plasma is assumed to follow the Boltzmann density distribution along magnetic field lines.
Date:
May 21, 2019
Creator:
Lane, Ryan A. & Ordonez, Carlos A.
System:
The UNT Digital Library
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
Artificially structured boundary plasma trap
This article presents a computer simulation of single-species non-neutral plasma confinement using an artificially structured boundary. The results support the prospect of developing plasma space-charge based confinement, with an unmagnetized plasma of one species of charged particles confined by an electric field produced by an edge-confined plasma of a second species of charged particles.
Date:
September 20, 2019
Creator:
Hedlof, R. M. & Ordonez, Carlos A.
System:
The UNT Digital Library
Concentric cone antihydrogen gravity experiment
This article describes a proposed antihydrogen gravity experiment that could be conducted at the CERN Antiproton Decelerator facility to determine the directionality of the acceleration of antihydrogen in earth’s gravitational field.
Date:
October 2, 2019
Creator:
Patel, S. S.; Sun, S. R. & Ordonez, Carlos A.
System:
The UNT Digital Library
Simulation of an electrostatic quadrupole quadruplet focusing lens system for MeV multi-ion micro-beam
Article presents the simulations of an electrostatic quadrupole quadruplet (EQQ) lens system that will be used in a new sub-micron multi-ion beam for radiobiological studies.
Date:
October 2, 2019
Creator:
Glass, Gary A.; Chirayath, V. A.; Arya, H.; Jin, M.; Weiss, A. H. & Chi, Y.
System:
The UNT Digital Library
Topology of Black Holes’ Horizons
Article exploring the topology of black holes.
Date:
April 3, 2019
Creator:
Tozzi, Arturo & Peters, James F.
System:
The UNT Digital Library
Dual-Band High Efficiency Terahertz Meta-Devices Based on Reflective Geometric Metasurfaces
Article proposing a novel reflective building block (unit cell) to work at two arbitrary terahertz frequency bands with independent phase control at each band.
Date:
April 18, 2019
Creator:
Lin, Yuankun; Wang, Tailei; Xie, Rensheng; Zhu, Shouzheng; Gao, Jianjun; Xin, Mingbo et al.
System:
The UNT Digital Library
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
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