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151 Matching Results
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Simultaneous Direct Holographic Fabrication of Photonic Cavity and Graded Photonic Lattice With Dual Periodicity, Dual Basis, and Dual Symmetry
This article demonstrates the digital, holographic fabrication of graded, super-basis photonic lattices with dual periodicity, dual basis, and dual symmetry.
Date:
June 15, 2017
Creator:
Lowell, David; Lutkenhaus, Jeffrey; George, David; Philipose, Usha; Chen, Banglin & Lin, Yuankun
Object Type:
Article
System:
The UNT Digital Library
Biocompatible, large-format, inkjet printed heterostructure molybdenum disulfide-graphene photodetectors on conformable substrates
This article describes an inkjet printed, biocompatible, heterostructure photodetector that was constructed using inks of photo-active molybdenum disulfide (MoS2) and electrically conducting graphene which facilitated charge collection of the photocarriers. The importance of such devices stems from their potential utility in age-related-macular degeneration, which is a condition where the photosensitive retinal tissue degrades with aging, eventually compromising vision. The absence of effective therapeutic remedies for patients with this disorder has motivated the development of such devices to restore some degree of visual function.
Date:
September 7, 2017
Creator:
Hossain, Ridwan F.; Deaguero, Isaac G.; Boland, Thomas & Kaul, Anupama
Object Type:
Article
System:
The UNT Digital Library
Extraordinary Light-Trapping Enhancement in Silicon Solar Cell Patterned with Graded Photonic Super-Crystals
This article explores light-trapping enhancement in newly discovered graded photonic super-crystals (GPSCs) with dual periodicity and dual basis.
Date:
December 7, 2017
Creator:
Hassan, Safaa; Lowell, David; Adewole, Murthada; George, David; Zhang, Hualiang & Lin, Yuankun
Object Type:
Article
System:
The UNT Digital Library
Ultra-high Photoresponsivity in Suspended Metal-Semiconductor-Metal Mesoscopic Multilayer MoS₂ Broadband Detector from UV-to-IR with Low Schottky Barrier Contacts
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:
February 23, 2017
Creator:
Saenz, Gustavo A.; Karapetrov, Goran; Curtis, James & Kaul, Anupama
Object Type:
Article
System:
The UNT Digital Library
Seasonal variations of biogeochemical matter export along the Langtang-Narayani river system in central Himalaya
Article describes study in which weathering and suspended matter fluxes of the Langtang Narayani river system in central Nepal Himalaya were investigated at 16 stations for one year, based on monthly water sampling in the lower reaches and bi-monthly in higher elevation areas, to determine temporal variations of weathering fluxes along an elevation profile between 169 and 3989 m asl.
Date:
July 7, 2018
Creator:
Bhatt, Maya P.; Hartmann, Jens & Acevedo, Miguel F.
Object Type:
Article
System:
The UNT Digital Library
EGFET-Based Sensors for Bioanalytical Applications: A Review
This article provides a review of the state of the art focused on the development of biosensors and chemosensors based on extended-gate field-effect transistor within the field of bioanalytical applications.
Date:
November 20, 2018
Creator:
Pullano, Salvatore Andrea; Critello, Costantino Davide; Mahbub, Ifana; Tasneem, Nishat Tarannum; Shamsir, Samira; Islam, Syed Kamrul et al.
Object Type:
Article
System:
The UNT Digital Library
Electrically tunable, sustainable, and erasable broadband light absorption in graphene sandwiched in Al2O3 oxides
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:
November 15, 2018
Creator:
Adewole, Murthada; Cui, Jingbiao; Lowell, David; Hassan, Safaa; Jiang, Yan; Singh, Abhay et al.
Object Type:
Article
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
Object Type:
Article
System:
The UNT Digital Library
Breaking the MDS-PIR Capacity Barrier via Joint Storage Coding
Paper explores the possibility of the capacity of private information retrieval (PIR) from databases coded using maximum distance separable (MDS) codes to be broken through joint encoding and storage of messages.
Date:
August 22, 2019
Creator:
Sun, Hua & Tian, Chao
Object Type:
Article
System:
The UNT Digital Library
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
Sc3N@C80 and La@C82 doped graphene for a new class of optoelectronic devices
This is the Author Manuscript version of an article presenting high-performance hybrid graphene photodetectors prepared with endohedral fullerenes deposited on graphene using electrophoretic methods for the first time.
Date:
December 19, 2019
Creator:
Jayanand, Kishan; Min, Misook; Chugh, Srishti; Kaul, Anupama; Adhikari, Nirmal & Echegoyen, Luis
Object Type:
Article
System:
The UNT Digital Library
Impact of Leadership and Mobility on Consensus-Building in Sensor Networks
Paper investigates the mobility dynamics in wireless sensor networks analytically, and discusses the advantages of the leader-follower model.
Date:
February 17, 2020
Creator:
Norouzi Kandalan, Roya; Varanasi, Murali R.; Buckles, Bill P., 1942- & Namuduri, Kamesh
Object Type:
Article
System:
The UNT Digital Library
Eficiência de um sistema piloto de dessalinização de água salobra
Article describes study which sought to evaluate the efficiency of pilot water desalination system treating brackish water which was obtained mixing fresh water and seawater up to reach 1,500 mg L-1 of total dissolved solids (TDS) concentration.
Date:
March 16, 2020
Creator:
Almeida, Juliano Penteado de; Kummer, Ana Carolina Barbosa; Carranza, Gabriel; Campos, Luiza Cintra; Széliga, Marcos Rogério; Acevedo, Miguel F. et al.
Object Type:
Article
System:
The UNT Digital Library
Modeling and Characterization of Scaling Factor of Flexible Spiral Coils for Wirelessly Powered Wearable Sensors
This article presents the design, modeling, and experimental characterization of flexible square-shaped spiral coils with different scaling factors for WPT systems. The effects of coil scaling factor on inductance, capacitance, resistance, and the quality factor (Q-factor) are modeled, simulated, and experimentally validated for the case of flexible planar coils. This article also presents the effect of skin contact with the flexible coil in terms of the power transfer efficiency (PTE) to validate the suitability as a wearable sensor.
Date:
April 17, 2020
Creator:
Biswas, Dipon K.; Sinclair, Melissa; Le, Tien; Pullano, Salvatore Andrea; Fiorillo, Antonino S. & Mahbub, Ifana
Object Type:
Article
System:
The UNT Digital Library
Light–matter interactions in two-dimensional layered tungsten diselenide for gauging evolution of phonon dynamics
Article exploring phonon dynamics in mechanically exfoliated two-dimensional WSe₂ using temperature-dependent and laser-power-dependent Raman and photoluminescence (PL) spectroscopy. The work reported sheds fundamental insights into the evolution of phonon dynamics in WSe₂ and should help pave the way for designing high-performance electronic, optoelectronic and thermoelectric devices in the future.
Date:
May 12, 2020
Creator:
Bandyopadhyay, Avra S.; Biswas, Chandan & Kaul, Anupama
Object Type:
Article
System:
The UNT Digital Library
Embedded Corrosion Sensing with ZnO-PVDF Sensor Textiles
Article investigating a non-conductive sensor textile as a viable solution for corrosion in underground and submerged steel pipes. The results offer a new option for sub-surface corrosion sensing using low cost, easily fabricated sensor textiles.
Date:
May 28, 2020
Creator:
Chowdhury, Tonoy; D'Souza, Nandika Anne, 1967-; Ho, Yee-Hsien; Dahotre, Narendra B. & Mahbub, Ifana
Object Type:
Article
System:
The UNT Digital Library
3D-printed and injection molded polymer matrix composites with 2D layered materials
This article reports on a study where 2D TMDs (MoS₂ and WS₂) and the 3D allotrope of carbon and graphite were incorporated into acrylonitrile butadiene styrene (ABS) and polyethylene terephthalate glycol (PETG) matrices in order to form polymer matrix composites (PMCs). The multipronged analysis described in this study was motivated by the purpose to fuse together topics of low-cost, additive manufacturing with 2D layered materials, and studying their ensuing mechanical and tribological properties.
Date:
June 26, 2020
Creator:
Gamboa, Gerardo; Mazumder, Sangram; Hnatchuk, Nathalie; Catalan Gonzalez, Jorge Alfredo; Cortes, Damaris; Chen, Ikang et al.
Object Type:
Article
System:
The UNT Digital Library
Inkjet-printed MoS₂-based field-effect transistors with graphene and hexagonal boron nitride inks
This article reports the design, fabrication, and characterization of an all inkjet-printed field-effect transistor (FET).
Date:
July 10, 2020
Creator:
Hossain, Ridwan F. & Kaul, Anupama
Object Type:
Article
System:
The UNT Digital Library
Inks of dielectric h-BN and semiconducting WS₂ for capacitive structures with graphene
This article presents dispersions of WS₂ and h-BN using cyclohexanone and terpineol as the solvent to subsequently print prototype capacitive nanodevices.
Date:
July 30, 2020
Creator:
Desai, Jay A.; Mazumder, Sangram; Hossain, Ridwan Fayaz & Kaul, Anupama
Object Type:
Article
System:
The UNT Digital Library
Fabrication and characterization of inkjet-printed 2D perovskite optoelectronic devices
Article presents the large scale synthesis of solution-processed 2D (CH₃(CH₂)₃NH₃)₂(CH₃NH₃)ₙ − 1PbₙI₃ₙ + 1 (n = 2, 3, and 4) perovskites, a family of layered compounds with composition-tunable bandgap, where inkjet printing was used to fabricate heterostructure, flexible photodetector devices. The flexible, inkjet-printed perovskite 2D heterostructures have significant potential for optoelectronic devices, which can enable broad possibilities with compositional tunability and versatility of the organohalide perovskites.
Date:
August 24, 2020
Creator:
Min, Misook; Hossain, Ridwan F.; Ma, Liang-Chieh & Kaul, Anupama
Object Type:
Article
System:
The UNT Digital Library
Sol-gel synthesized indium tin oxide as a transparent conducting oxide with solution-processed black phosphorus for its integration into solar-cells
This article describes the synthesis of indium tin oxide (ITO) thin films using solgel processing with a mixture of InCl₃, methanol, and SnCl₂, where the solutions were spin coated onto glass substrates. The combined architecture of black phosphorus on ITO thin films shows promise in its use for transparent electronics, which can also serve as a stepping stone for future solar cell platforms.
Date:
October 9, 2020
Creator:
Mehta, Ravindra; Min, Misook & Kaul, Anupama
Object Type:
Article
System:
The UNT Digital Library
Cache-Aided General Linear Function Retrieval
This article designs a novel coded caching scheme that outperforms uncoded caching schemes that either use unicast transmissions or let each user recover all files in the library. It extends the scope of the authors’ past work that only considered the class of linear functions that operate element-wise over the files.
Date:
December 26, 2020
Creator:
Wan, Kai; Sun, Hua; Ji, Mingyue; Tuninetti, Daniela & Caire, Giuseppe
Object Type:
Article
System:
The UNT Digital Library
Feasibility Study of Microsecond Pulsed Microwave Ablation Using a Minimally Invasive Antenna
Article establishing the feasibility of producing localized ablation zones using microsecond pulsed microwave ablation (MWA) as an alternative to conventional continuous wave (CW) MWA. Results open the opportunity for developing a coupled MWA treatment and imaging system using pulsed MWA and microwave-induced thermoacoustic signals for real-time monitoring of MWA.
Date:
February 16, 2021
Creator:
Evans, Audrey L.; Sawicki, James F.; Luyen, Hung; Mohtashami, Yahya; Behdad, Nader & Hagness, Susan C.
Object Type:
Article
System:
The UNT Digital Library
A 2.53 NEF 8-bit 10 kS/s 0.5 µm CMOS Neural Recording Read-Out Circuit with High Linearity for Neuromodulation Implants
This article presents a power-efficient complementary metal-oxide-semiconductor (CMOS) neural signal-recording read-out circuit for multichannel neuromodulation implants.
Date:
March 3, 2021
Creator:
Tasneem, Nishat Tarannum & Mahbub, Ifana
Object Type:
Article
System:
The UNT Digital Library