UNT College of Engineering - 219 Matching Results

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open access

Ultra-high Photoresponsivity in Suspended Metal-Semiconductor-Metal Mesoscopic Multilayer MoS₂ Broadband Detector from UV-to-IR with Low Schottky Barrier Contacts

Description: This article describes the performance of a multifaceted investigation comprising of atomic force microscopy (AFM0, photoluminescence (PL) and Raman spectroscopy to analyze the structural and chemical characteristics to help shed insights on the origins of the superior optoelectronic device performance.
Date: January 19, 2018
Creator: Saenz, Gustavo A.; Karapetrov, Goran; Curtis, James & Kaul, Anupama
open access

Controlling the length scale and distribution of the ductile phase in metallic glass composites through friction stir processing

Description: This article demonstrates the refinement and uniform distribution of the crystalline dendritic phase by friction stir processing of titanium based in situ ductile-phase reinforced metallic glass composite.
Date: June 24, 2014
Creator: Singh Arora, Harpreet; Mridha, Sanghita; Singh Grewal, Harpeet; Singh, Harpreet; Hofmann, Douglas C. & Mukherjee, Sundeep
open access

Operando tribochemical formation of onion-likecarbon leads to macroscale superlubricity

Description: This article demonstrates that tribochemical reactions occur even in dry conditions when hydrogenated diamond-like carbon (H-DLC) surface is slid against two-dimensional (2D) molybdenum disulfide along with nanodiamonds in dry nitrogen atmosphere.
Date: March 21, 2018
Creator: Berman, Diana; Narayanan, Badri; Cherukara, Mathew J.; Sankaranarayanan, Subramanian K.R.S.; Erdemir, Ali; Zinovev, Alexander et al.
open access

Influence of ordered L1₂ precipitation on strain-rate dependent mechanical behavior in a eutectic high entropy alloy

Description: This article focuses on Al0.7CoCrFeNi, a lamellar dual-phase (fcc + B2) precipitation-strengthenable eutectic high entropy alloy. The back-stresses from the coherent L12 precipitate were insufficient to cause improvement in twin nucleation, owing to elevated twinning stress under quasi-static testing. However, under dynamic testing high density of twins were observed.
Date: April 23, 2019
Creator: Gwalani, Bharat; Gangireddy, Sindhura; Zheng, Yufeng; Soni, V.; Mishra, Rajiv & Banerjee, Rajarshi
open access

Synthesis of uniform single layer tungsten disulfides for tunable photoluminescence

Description: This article explores single-layer tungsten disulfides (WS₂) because of their unique tunable bandgap. The authors report the scalable synthesis of uniform single-layer WS2 film by a two-step chemical vapor deposition (CVD) method followed by a laser thinning process.
Date: November 23, 2017
Creator: Park, Juhong; Kim, Min Su; Cha, Eunho; Kim, Jeongyong & Choi, Wonbong
open access

Dynamics of self-reorganization explains passivation of silicate glasses

Description: This article demonstrates that gel reorganization involving high exchange rate of oxygen and low exchange rate of silicon is the key mechanism accounting for extremely low apparent water diffusivity.
Date: June 4, 2018
Creator: Gin, Stéphane; Collin, Marie; Jollivet, Patrick; Fournier, Maxime; Minet, Yves; Dupuy, Laurent et al.
open access

Growth of pulsed laser deposited few-layer WS2 films

Description: This article performs X-ray photoelectron, Raman, and diffraction studies of few-layered pulsed laser deposited WS₂ films as a function of laser fluence and frequency to understand the impact on structure and properties.
Date: August 13, 2019
Creator: Rathod, Urmilaben P.; Cai, Bimin; Iheomamere, Chukwudi; Nyandoto, Gilbert; Voevodin, Andrey A. & Shepherd, Nigel D.
open access

Composition-dependent apparent activation-energy and sluggish grain-growth in high entropy alloys

Description: Article discusses experimental results which reveal that the apparent activation-energy for grain-growth in an fcc-based AlxCoCrFeNi high entropy alloy (HEA) system increases from 179 to 486 kJ/mol when the Al content increases from x = 0.1 to 0.3.
Date: April 10, 2019
Creator: Gwalani, Bharat; Salloom, Riyadh; Alam, Talukder; Valentin, S.G.; Zhou, X.; Thompson, G. et al.
open access

Rapid thermokinetics driven nanoscale vanadium clustering within martensite laths in laser powder bed fused additively manufactured Ti6Al4V

Description: Article reports the computational approach adopted for thermo-diffusion kinetics to rationalize homogenously distributed nanoscale vanadium-rich clusters formed within the martensite laths of Ti6Al4V alloy printed using laser powder bed fusion at an energy density of 52.08J/mm³.
Date: June 1, 2020
Creator: Pantawane, Mangesh V.; Dasari, Sriswaroop; Mantri, Srinivas Aditya; Banerjee, Rajarshi & Dahotre, Narendra B.
open access

Hierarchical features infused heterogeneous grain structure for extraordinary strength-ductility synergy

Description: Article describes experiment in which a synergistic balance of strength and ductility was achieved in a prototypical fcc-based Al0.3CoCrFeNi complex concentrated alloy by incorporating hierarchical microstructural features into heterogeneous grain structure.
Date: October 27, 2018
Creator: Shukla, Shivakant; Choudhuri, Deep; Wang, Tianhao; Liu, Kaimiao; Robert Wheeler; Williams, Sarah et al.
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