26 Matching Results

Search Results

Results: 1 - 24 next
open access

Mechanism for etching of exfoliated graphene on substrates by low-energy electron irradiation from helium plasma electron sources

Description: Article investigating the mechanism for etching of exfoliated graphene multilayers on SiO₂ by low-energy (50 eV) electron irradiation using He plasma systems for electron sources.
Date: February 26, 2019
Creator: Femi-Oyetoro, John D.; Yao, Kevin; Tang, Runtian; Ecton, Philip A.; Roccapriore, Kevin M.; Mhlanga, Ashley et al.
Partner: University of North Texas
open access

Polymeric Coatings for Skutterudite-Based Thermoelectric Materials

Description: Article is a study with the main objective of mitigation of thermal degradation of skutterudite-based thermoelectric materials—so as to extend the service life of those materials and make them more attractive for industry from the economical perspective. Significant mitigation of oxidation and sublimation of thermoelectric (TE) materials was achieved.
Date: April 18, 2022
Creator: Brostow, Witold, 1934-; Chen, Ikang & Hagg Lobland, Haley E.
Partner: University of North Texas
open access

A Review of Diagnostics Methodologies for Metal Additive Manufacturing Processes and Products

Description: This article is a review summarizing and discussing various ex-situ inspections and in-situ monitoring methods, including electron-based methods, thermal methods, acoustic methods, laser breakdown, and mechanical methods, for metal additive manufacturing.
Date: August 30, 2021
Creator: Yang, Teng; Mazumder, Sangram; Jin, Yuqi; Squires, Brian; Sofield, Matthew; Pantawane, Mangesh V. et al.
Partner: University of North Texas
open access

Adaptation of Fluctuating Magnetoacoustic System to External Signals

Description: Article studying the influence of microwave signals of different shapes on the magnetoacoustic wave system with a giant nonlinearity in canted antiferromagnet FeBO₃ at room temperature, which is close to its phase transition to the paramagnetic state. Results represent the first observation of the macroscopic quantum statistical phenomenon, Bose-Einstein condensation of magnetoacoustic wave quanta in a wave system with a high level of thermal fluctuations.
Date: June 2, 2021
Creator: Safonov, Vladimir L.; Bas, Derek A.; Berman, Diana; Rostovtsev, Yuri V.; Roberts, James A.; Mcconney, Michael E. et al.
Partner: University of North Texas
open access

Ultrasound Imaging by Thermally Tunable Phononic Crystal Lens

Description: This article demonstrates the detections and mappings of a solid object using a thermally tunable solid-state phononic crystal lens at low frequency for potential use in future long-distance detection.
Date: July 26, 2021
Creator: Jin, Yuqi & Neogi, Arup
Partner: University of North Texas
open access

Entropy Balance in the Expanding Universe: A Novel Perspective

Description: 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.
Partner: University of North Texas
open access

Crystallographic texture dependent bulk anisotropic elastic response of additively manufactured Ti6Al4V

Description: This article identifies a bulk texture effect on elastic anisotropy in laser powder bed fused Ti6Al4V by employing an effective bulk modulus elastography technique coupled with ultrasound shear wave velocity measurement at a frequency of 20 MHz inside the material.
Date: January 12, 2021
Creator: Pantawane, Mangesh V.; Yang, Teng; Jin, Yuqi; Joshi, Sameehan; Dasari, Sriswaroop; Sharma, Abhishek et al.
Partner: University of North Texas
open access

Broadband Absorption in Patterned Metal/Weakly-Absorbing-Spacer/Metal with Graded Photonic Super-Crystal

Description: Article studying high light absorption in two devices: a stack of Au-pattern/insulator/Au-film and a stack of Au-pattern/weakly-absorbing-material/Au-film where the Au-pattern was structured in graded photonic super-crystal. Multiple-band absorption, including one near 1500 nm, in a stack of Au-pattern/spacer/Au-film was observed.
Date: April 8, 2021
Creator: Kamau, Steve; Hassan, Safaa; Alnasser, Khadijah; Zhang, Hualiang; Cui, Jingbiao & Lin, Yuankun
Partner: University of North Texas
open access

Generation of over 1000 Diffraction Spots from 2D Graded Photonic Super-Crystals

Description: 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.
Partner: University of North Texas
open access

Single-Step Photochemical Formation of Near-Infrared-Absorbing Gold Nanomosaic within PNIPAm Microgels: Candidates for Photothermal Drug Delivery

Description: Article demonstrating the dynamic potential for tailoring the surface plasmon resonance (SPR), size, and shapes of gold nanoparticles (AuNPs) starting from an Au(I) precursor, chloro(dimethyl sulfide)gold (I) (Au(Me2S)Cl), in lieu of the conventional Au(III) precursor hydrogen tetrachloroaurate (III) hydrate (HAuCl4). This approach presents a one-step method that permits regulation of an Au(I) precursor to form either visible-absorbing gold nanospheres or near-infrared-window (NIRW)-absorbing a… more
Date: June 28, 2020
Creator: Marpu, Sreekar; Kamras, Brian; Nasiri, Nooshin Mirza; Elbjeirami, Oussama; Simmons, Denise Perry; Hu, Zhibing et al.
Partner: University of North Texas
open access

Maxwell-Wagner-Sillars Dynamics and Enhanced Radio-Frequency Elastomechanical Susceptibility in PNIPAm Hydrogel-KF-doped Barium Titanate Nanoparticle Composites

Description: 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.
Partner: University of North Texas
open access

Towards Deep Integration of Electronics and Photonics

Description: 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.
Partner: University of North Texas
open access

Photonic Band Gaps and Resonance Modes in 2D Twisted Moiré Photonic Crystal

Description: Article studying 2D twisted moiré photonic crystals without physical rotation and simulating their photonic band gaps in photonic crystals formed at different twisted angles, different gradient levels, and different dielectric filling factors.
Date: September 23, 2021
Creator: Alnasser, Khadijah; Kamau, Steve; Hurley, Noah; Cui, Jingbiao & Lin, Yuankun
Partner: University of North Texas
open access

Energy Conversion During Expansion of a Solid-Particle-Entrained Gas

Description: 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 oth… more
Date: January 10, 2013
Creator: Ordonez, Carlos A.; Weathers, Duncan L. & Traum, Matthew J.
Partner: University of North Texas
open access

Resonance modes in moiré photonic patterns for twistoptics

Description: Article studying twistoptics for manipulating optical properties in twisted moiré photonic patterns without physical rotations. The presented approach can lead toward the study of twistoptics for the manipulating of optical properties in moiré patterns with different twist angles.
Date: April 12, 2021
Creator: Alnasser, Khadijah; Kamau, Steve; Cui, Jingbiao & Lin, Yuankun
Partner: University of North Texas
open access

Electrically tunable, sustainable, and erasable broadband light absorption in graphene sandwiched in Al2O3 oxides

Description: 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: February 11, 2019
Creator: Adewole, Murthada; Cui, Jingbiao; Lowell, David; Hassan, Safaa; Jiang, Yan; Singh, Abhay et al.
Partner: University of North Texas
open access

Manufacturing and Characterization of Hybrid Bulk Voxelated Biomaterials Printed by Digital Anatomy 3D Printing

Description: 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.
Partner: University of North Texas
Back to Top of Screen