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Extraordinary Light-Trapping Enhancement in Silicon Solar Cell Patterned with Graded Photonic Super-Crystals (open access)

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
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 (open access)

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
System: The UNT Digital Library
Leaf spectra and weight of species in canopy, subcanopy, and understory layers in a Venezuelan Andean Cloud Forest (open access)

Leaf spectra and weight of species in canopy, subcanopy, and understory layers in a Venezuelan Andean Cloud Forest

Article discussing leaf spectra and the weight of species in canopy, subcanopy, and understory layers in a Venezuelan Andean cloud forest.
Date: 2012
Creator: Acevedo, Miguel F. & Ataroff, Michele
System: The UNT Digital Library
A Network Control Theory Approach to Modeling and Optimal Control of Zoonoses: Case Study of Brucellosis Transmission in Sub-Saharan Africa (open access)

A Network Control Theory Approach to Modeling and Optimal Control of Zoonoses: Case Study of Brucellosis Transmission in Sub-Saharan Africa

Article on a network control theory approach to modeling and optimal control of zoonoses and a case study of brucellosis transmission in sub-Saharan Africa.
Date: October 2011
Creator: Roy, Sandip; McElwain, Terry F. & Wan, Yan
System: The UNT Digital Library
Efficient multiband and broadband cross polarization converters based on slotted Lshaped nanoantennas (open access)

Efficient multiband and broadband cross polarization converters based on slotted Lshaped nanoantennas

This article presents highly efficient reflective cross polarization converters based on metamaterials operating in the infrared regime.
Date: November 14, 2014
Creator: Ding, Jun; Arigong, Bayaner; Ren, Han; Zhou, Mi; Shao, Jin; Lin, Yuankun et al.
System: The UNT Digital Library
Reconfigurable Surface Plasmon Polariton Wave Adapter Designed by Transformation Optics (open access)

Reconfigurable Surface Plasmon Polariton Wave Adapter Designed by Transformation Optics

This article proposes a reconfigurable surface plasmon polariton (SPP) wave adapter designed by transformation optics, which can control the propagation of SPP waves on un-even surfaces.
Date: June 18, 2012
Creator: Arigong, Bayaner; Shao, Jin; Ren, Han; Zheng, Geng; Lutkenhaus, Jeffrey; Kim, HyoungSoo et al.
System: The UNT Digital Library
Holographic fabrication of 3D photonic crystals through interference of multi-beams with 4 + 1, 5 + 1 and 6 + 1 configurations (open access)

Holographic fabrication of 3D photonic crystals through interference of multi-beams with 4 + 1, 5 + 1 and 6 + 1 configurations

This article fabricates 3D photonic crystals or quasi-crystals through single beam and single optical element based holographic lithography.
Date: September 9, 2014
Creator: George, David; Lutkenhaus, Jeffrey; Lowell, David; Moazzezi, Mojtaba; Adewole, Murthada; Philipose, Usha et al.
System: The UNT Digital Library
Simultaneous Direct Holographic Fabrication of Photonic Cavity and Graded Photonic Lattice With Dual Periodicity, Dual Basis, and Dual Symmetry (open access)

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
System: The UNT Digital Library
Habitat Quantity of Red-Cockaded Woodpecker Picoides Borealis (Aves: Piciformes: Picidae) in its Former Historic Landscape Near the Big Thicket Naitonal Preserve, Texas, USA (open access)

Habitat Quantity of Red-Cockaded Woodpecker Picoides Borealis (Aves: Piciformes: Picidae) in its Former Historic Landscape Near the Big Thicket Naitonal Preserve, Texas, USA

This article quantifies pine-forested habitat suitable for Red-cockaded Woodpecker in the former historic range of the species to assess the potential for possible re-colonization.
Date: January 26, 2016
Creator: Thapa, Vivek & Acevedo, Miguel F.
System: The UNT Digital Library
An Analysis of the Habitat of the Greater One-Horned Rhinoceros Rhinoceros Unicornis (Mammalia: Perissodactyla: Rhinocerotidae) at the Chitwan National Park, Nepal (open access)

An Analysis of the Habitat of the Greater One-Horned Rhinoceros Rhinoceros Unicornis (Mammalia: Perissodactyla: Rhinocerotidae) at the Chitwan National Park, Nepal

This article uses geographic information systems and landscape-level data obtained from remote sensing sources to build a habitat suitability index model for the Greater One-horned Rhinoceros.
Date: September 26, 2014
Creator: Thapa, Vivek; Acevedo, Miguel F. & Limbu, Kul P.
System: The UNT Digital Library
Scalable Fabrication of Natural-Fiber Reinforced Composites with Electromagnetic Interference Shielding Properties by Incorporating Powdered Activated Carbon (open access)

Scalable Fabrication of Natural-Fiber Reinforced Composites with Electromagnetic Interference Shielding Properties by Incorporating Powdered Activated Carbon

This article discusses preparing Kenaf fiber-polyester composites incorporated with powdered activated carbon (PAC) using the vacuum-assisted resin transfer molding(VARTM) process.
Date: November 17, 2015
Creator: Xia, Changlei; Zhang, Shifeng; Ren, Han; Shi, Sheldon Q.; Zhang, Hualiang; Cai, Liping et al.
System: The UNT Digital Library
Sc3N@C80 and La@C82 doped graphene for a new class of optoelectronic devices (open access)

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
System: The UNT Digital Library
Inkjet printing of liquid-exfoliated, highly conducting graphene/poly(3,4 ethylenedioxythiophene):poly(styrenesulfonate) nanosheets for organic electronics (open access)

Inkjet printing of liquid-exfoliated, highly conducting graphene/poly(3,4 ethylenedioxythiophene):poly(styrenesulfonate) nanosheets for organic electronics

In this article, highly dispersive graphene inks are demonstrated by liquid-phase exfoliation of the bulk graphite crystal in the solvent N-methyl-2-pyrrolidone (NMP).
Date: May 4, 2017
Creator: Desai, Jay A.; Biswas, Chandan & Kaul, Anupama
System: The UNT Digital Library
Investigation of structural morphology and electrical properties of graphene-C₆₀ hybrids (open access)

Investigation of structural morphology and electrical properties of graphene-C₆₀ hybrids

This article reports on the electrophoretic deposition of C₆₀ on graphene. The results suggest that graphene based C₆₀ structures are attractive as flexible transparent electrodes and are excellent electron accepting/charge transport materials for the construction of efficient photovoltaic devices.
Date: May 2, 2017
Creator: Chugh, Srishti; Biswas, Chandan; Echegoyen, Luis & Kaul, Anupama
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 (open access)

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
System: The UNT Digital Library
Inks of dielectric h-BN and semiconducting WS₂ for capacitive structures with graphene (open access)

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
System: The UNT Digital Library
Inkjet-printed MoS₂-based field-effect transistors with graphene and hexagonal boron nitride inks (open access)

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
System: The UNT Digital Library
Polydimethylsiloxane and polyisoprene-based graphene composites for strain-sensing (open access)

Polydimethylsiloxane and polyisoprene-based graphene composites for strain-sensing

In this article, different composite materials have been developed and characterized for different applications in the health science field and as optoelectromechanical sensors.
Date: March 31, 2017
Creator: Catalan Gonzalez, Jorge Alfredo & Kaul, Anupama
System: The UNT Digital Library
Fabrication of wide-IF 200–300GHz superconductor–insulator–superconductor mixers with suspended metal beam leads formed on silicon-on-insulator (open access)

Fabrication of wide-IF 200–300GHz superconductor–insulator–superconductor mixers with suspended metal beam leads formed on silicon-on-insulator

This article reports on a fabrication process that uses silicon-oninsulator (SOI) substrates and micromachining techniques to form wide-IF superconductor–insulator–superconductor (SIS) mixer devices that have suspended metal beam leads for rf grounding. Aside from a description of the fabrication process, electrical measurements of these Nb/Al–AlNₓ /Nb trilayer devices will also be presented.
Date: October 7, 2004
Creator: Kaul, Anupama; Bumble, Bruce; Lee, Karen A.; LeDuc, Henry G.; Rice, Frank & Zmuidzinas, Jonas
System: The UNT Digital Library
Fabrication and characterization of inkjet-printed 2D perovskite optoelectronic devices (open access)

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
System: The UNT Digital Library
3D-printed and injection molded polymer matrix composites with 2D layered materials (open access)

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.
System: The UNT Digital Library
Simulación de la dinámica de un bosque tropical en los Llanos occidentales de Venezuela (open access)

Simulación de la dinámica de un bosque tropical en los Llanos occidentales de Venezuela

Article discussing the simulation of the dynamics of a tropical forest in the Western Llanos of Venezuela.
Date: February 2006
Creator: Angulo, Hirma Ramírez; Ablan, Magdiel; Torres-Lezama, Armando & Acevedo, Miguel F.
System: The UNT Digital Library
Heterogeneidad estructural y lumínica del sotobosque de una selva nublada andina de Venezuela (open access)

Heterogeneidad estructural y lumínica del sotobosque de una selva nublada andina de Venezuela

Article discussing the understory of an Andean cloud forest in the Sierra Nevada National Park, Venezuela.
Date: July 2003
Creator: Acevedo, Miguel F.; Ataroff, Michele; Monteleone, Susan & Estrada, Carlos A.
System: The UNT Digital Library
Relaciones alométricas y patrones de crecimiento para especies de árboles de la reserva forestal Imataca, Venezuela (open access)

Relaciones alométricas y patrones de crecimiento para especies de árboles de la reserva forestal Imataca, Venezuela

Article discussing allometric relations and growth patterns for tree species in the Imataca Forest Reserve, Venezuela.
Date: May 2005
Creator: Delgado, Luz A.; Acevedo, Miguel F.; Castellanos, Hernán; Angulo, Hirma Ramírez & Serrano, Julio
System: The UNT Digital Library