15 Matching Results

Explore Results

Results: 1 - 15
open access

Cooperative bi-exponential decay of dye emission coupled via plasmons

Description: This article demonstrates that the relaxation in the sub-radiant system leads to the population of the sub-radiant states by dephasing the super-radiant Dicke states giving rise to the bi-exponential decay in agreement with the experiments.
Date: June 22, 2018
Creator: Lyvers, David P.; Moazzezi, Mojtaba; de Silva, Vashista C.; Brown, Dean P.; Urbas, Augustine M.; Rostovtsev, Yuri V. et al.
Partner: UNT College of Science
open access

New mechanism of plasmons specific for spin-polarized nanoparticles

Description: 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: February 14, 2019
Creator: Bhatta, Hari L.; Aliev, Abil E. & Drachev, Vladimir P.
Partner: UNT College of Science
open access

Hexagonal MoTe₂ with Amorphous BN Passivation Layer for Improved Oxidation Resistance and Endurance of 2D Field Effect Transistors

Description: This article demonstrates the effectiveness of an a-BN capping layer in preserving few-layer MoTe₂ material quality and controlling its conductivity type at elevated temperatures in an atmospheric environment.
Date: June 6, 2018
Creator: Sirota, Benjamin; Glavin, Nicholas; Krylyuk, Sergiy; Davydov, Albert V. & Voevodin, Andrey A.
Partner: UNT College of Engineering
open access

Effect of Substrate Support on Dynamic Graphene/Metal Electrical Contacts

Description: This article investigates the stability of dynamic electrical contacts at a graphene/metal interface using atomic force microscopy (AFM), under static conditions with variable normal loads and under sliding conditions with variable speeds.
Date: April 7, 2018
Creator: Lee, Jihyung; Hu, Xiaoli; Voevodin, Andrey A.; Martini, Ashlie & Berman, Diana
Partner: UNT College of Engineering
open access

Work hardening in metastable high entropy alloys: a modified five-parameter model

Description: Article models work hardening response in TRIP HEAs under tensile deformation, which reflects the hardening due to synergistic activity of multiple deformation mechanisms, using a five-parameter work hardening model.
Date: April 19, 2022
Creator: Haridas, Ravi Sankar; Agrawal, Priyanka; Yadav, Surekha; Agrawal, Priyanshi; Gumaste, Anurag & Mishra, Rajiv
Partner: UNT College of Engineering
open access

Engineered nonlinear materials using gold nanoantenna array

Description: This article describes the use of a gold nanoantenna array to enhance both the nonlinear refractive index and two-photon absorption (2PA) of the organic dye 4,4'-bis(diphenylamino)stilbene (BDPAS), which is known as a dye with relatively large 2PA.
Date: January 15, 2018
Creator: Drachev, Vladimir P.; Kildishev, Alexander V.; Borneman, Joshua D.; Chen, Kuo-Ping; Shalaev, Vladimir; Yamnitskiy, Konstantin et al.
Partner: UNT College of Science
open access

Dynamic Shear Deformation of a Precipitation Hardened Al0.7CoCrFeNi Eutectic High-Entropy Alloy Using Hat-Shaped Specimen Geometry

Description: The article reports on the shear deformation of a eutectic structured HEA and effect of precipitation on shear deformation, particularly Al₀.₇CoCrFeNi high-entropy alloy (HEA). A split-Hopkinson pressure bar (SHPB) was used to compress the hat-shaped specimens to study the local dynamic shear response of the alloy. The change in the width of shear bands with respect to precipitation and deformation rates was studied. The precipitation of L1₂ phase did not delay the formation of adiabatic shear… more
Date: April 10, 2020
Creator: Gwalani, Bharat; Wang, Tianhao; Jagetia, Abhinav; Gangireddy, Sindhura; Muskeri, Saideep; Mukherjee, Sundeep et al.
Partner: UNT College of Engineering
open access

Pavement Distress Detection with PICUCHA Methodology for Area-Scan Cameras and Dark Images

Description: This article discusses the test of the PICture Unsupervised Classification with Human Analysis (PICUCHA) performance with images taken with area-scan cameras and flash light illumination over a pavement with dark textures.
Date: April 2017
Creator: Salini, Reus; Xu, Bugao & Paplauskas, Paulius
Partner: UNT College of Merchandising, Hospitality and Tourism
open access

Hybrid Human-Artificial Intelligence Approach for Pavement Distress Assessment (PICUCHA)

Description: This article proposes a new method named PICture Unsupervised Classification with Human Analysis (PICUCHA) to circumvent many of the limitations of existing approaches, based on a combination of human and artificial intelligence.
Date: July 2017
Creator: Salini, Reus; Xu, Bugao & Carvalho, Regis
Partner: UNT College of Merchandising, Hospitality and Tourism
open access

Impact of Image Resolution Pavement Distress Detection Using PICUCHA Methodology

Description: This article describes a study focused on the analysis of a newly-developed pavement distress classification algorithm, called the PICture Unsupervised Classification with Human Analysis (PICUCHA) method, particularly the impact of image resolutions on its classification accuracy.
Date: December 2016
Creator: Salini, Reus; Xu, Bugao & Souliman, Mena
Partner: UNT College of Merchandising, Hospitality and Tourism
open access

Pyrene Bearing Azo-Functionalized Porous Nanofibers for CO₂ Separation and Toxic Metal Cation Sensing

Description: This article describes the construction of a novel luminescent azo-linked polymer from 1,3,6,8-tetra(4--aminophenyl)pyrene using a copper(I)-catalyzed oxidative homocoupling reaction.
Date: November 14, 2018
Creator: El-Kadri, Oussama M.; Tessema, Tsemre-Dingel; Almotawa, Ruaa M.; Arvapally, Ravi K.; Al-Sayah, Mohammad H.; Omary, Mohammad A. et al.
Partner: UNT College of Science
open access

Waveguide Coupling via Magnetic Gratings with Effective Strips

Description: This article provides an overview of an approach convenient for describing intermediate gratings for two types of applications: both metafilms and the coupling of incident waves to waveguide modes or diffraction orders.
Date: April 14, 2018
Creator: Roccapriore, Kevin M.; Lyvers, David P.; Brown, Dean P.; Poutrina, Ekaterina; Urbas, Augustine M.; Germer, Thomas A. et al.
Partner: UNT College of Science
Back to Top of Screen