Nihar Pradhan
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View article: Percolative phase transition in few-layered MoSe<sub>2</sub> field-effect transistors using Co and Cr contacts
Percolative phase transition in few-layered MoSe<sub>2</sub> field-effect transistors using Co and Cr contacts Open
The metal-to-insulator phase transition in 2D materials has revealed interesting electronic behavior and the need for a deeper understanding of electronic transport processes while attracting interest in developing next-generation electron…
View article: High-Density Capacitive Energy Storage in Low-Dielectric-Constant Polymer PMMA/2D Mica Nanofillers Heterostructure Composite
High-Density Capacitive Energy Storage in Low-Dielectric-Constant Polymer PMMA/2D Mica Nanofillers Heterostructure Composite Open
The ubiquitous, rising demand for energy storage devices with ultra-high storage capacity and efficiency has drawn tremendous research interest in developing energy storage devices. Dielectric polymers are one of the most suitable material…
View article: Advancements in 2D MXene-based supercapacitor electrodes: synthesis, mechanisms, electronic structure engineering, flexible wearable energy storage for real-world applications, and future prospects
Advancements in 2D MXene-based supercapacitor electrodes: synthesis, mechanisms, electronic structure engineering, flexible wearable energy storage for real-world applications, and future prospects Open
Supercapacitors are widely recognized as a favorable option for energy storage due to their higher power density compared to batteries, despite their lower energy density.
View article: Ultrahigh Capacitive Energy Density in Stratified 2D Nanofiller-Based Polymer Dielectric Films
Ultrahigh Capacitive Energy Density in Stratified 2D Nanofiller-Based Polymer Dielectric Films Open
Dielectric capacitors are critical components in electronics and energy storage devices. The polymer-based dielectric capacitors have the advantages of device flexibility, fast charge-discharge rates, low loss, and graceful failure. Elevat…
View article: Probing the Electronic and Opto-Electronic Properties of Multilayer MoS2 Field-Effect Transistors at Low Temperatures
Probing the Electronic and Opto-Electronic Properties of Multilayer MoS2 Field-Effect Transistors at Low Temperatures Open
Transition metal dichalcogenides (TMDs)-based field-effect transistors (FETs) are being investigated vigorously for their promising applications in optoelectronics. Despite the high optical response reported in the literature, most of them…
View article: Comparative Study of Polymer-Grafted BaTiO3 Nanoparticles Synthesized Using Normal ATRP as Well as ATRP and ARGET-ATRP with Sacrificial Initiator with a Focus on Controlling the Polymer Graft Density and Molecular Weight
Comparative Study of Polymer-Grafted BaTiO3 Nanoparticles Synthesized Using Normal ATRP as Well as ATRP and ARGET-ATRP with Sacrificial Initiator with a Focus on Controlling the Polymer Graft Density and Molecular Weight Open
Structurally well-defined polymer-grafted nanoparticle hybrids are highly sought after for a variety of applications, such as antifouling, mechanical reinforcement, separations, and sensing. Herein, we report the synthesis of poly(methyl m…
View article: Polymer-Grafted Nanoparticles with Variable Grafting Densities for High Energy Density Polymeric Nanocomposite Dielectric Capacitors
Polymer-Grafted Nanoparticles with Variable Grafting Densities for High Energy Density Polymeric Nanocomposite Dielectric Capacitors Open
Designing high energy density dielectric capacitors for advanced energy storage systems needs nanocomposite-based dielectric materials, which can utilize the properties of both inorganic and polymeric materials. Polymer-grafted nanoparticl…
View article: 2D‐Nanofiller‐Based Polymer Nanocomposites for Capacitive Energy Storage Applications
2D‐Nanofiller‐Based Polymer Nanocomposites for Capacitive Energy Storage Applications Open
High‐energy‐density storage devices play a major role in modern electronics from traditional lithium‐ion batteries to supercapacitors for a variety of applications from rechargeable devices to advanced military equipment. Despite the mass …
View article: High Energy Density in layered 2D Nanomaterial based Polymer Dielectric Films
High Energy Density in layered 2D Nanomaterial based Polymer Dielectric Films Open
Dielectric capacitors are critical components in electronics and energy storage devices. The polymer based dielectric capacitors have advantages of flexibility, fast charge and discharge, low loss, and graceful failure. Elevating the use o…
View article: Insulator-to-metal phase transition in a few-layered MoSe<sub>2</sub> field effect transistor
Insulator-to-metal phase transition in a few-layered MoSe<sub>2</sub> field effect transistor Open
We report an insulator-to-metal phase transition in a few-layer MoSe 2 field-effect transistor. The conductivity (shown in figure) becomes metallic at a critical carrier density of 1.2 x 10 12 cm -2 and is analyzed using percolation theory.
View article: Enhanced Dielectric Strength and Capacitive Energy Density of Cyclic Polystyrene Films
Enhanced Dielectric Strength and Capacitive Energy Density of Cyclic Polystyrene Films Open
The maximum capacitive energy stored in polymeric dielectric capacitors, which are ubiquitous in high-power-density devices, is dictated by the dielectric breakdown strength of the dielectric polymer. The fundamental mechanisms of the diel…
View article: Bright and Dark Exciton Coherent Coupling and Hybridization Enabled by External Magnetic Fields
Bright and Dark Exciton Coherent Coupling and Hybridization Enabled by External Magnetic Fields Open
Magnetic field- and polarization-dependent measurements on bright and dark excitons in monolayer WSe2 combined with time-dependent density functional theory calculations reveal intriguing phenomena. Magnetic fields up to 25 T parallel to t…
View article: Recent Advances in the Synthesis of Polymer-Grafted Low-K and High-K Nanoparticles for Dielectric and Electronic Applications
Recent Advances in the Synthesis of Polymer-Grafted Low-K and High-K Nanoparticles for Dielectric and Electronic Applications Open
The synthesis of polymer-grafted nanoparticles (PGNPs) or hairy nanoparticles (HNPs) by tethering of polymer chains to the surface of nanoparticles is an important technique to obtain nanostructured hybrid materials that have been widely u…
View article: Alignment frustration in block copolymer films with block copolymer grafted <scp>TiO<sub>2</sub></scp> nanoparticles under <scp>soft‐shear</scp> cold zone annealing
Alignment frustration in block copolymer films with block copolymer grafted <span>TiO<sub>2</sub></span> nanoparticles under <span>soft‐shear</span> cold zone annealing Open
Block copolymers (BCPs) have received significant attention as promising candidates for sequestering nanoparticles and fabrication of aligned nanostructures with optimal optical or electrical properties. We investigate the influence of sta…
View article: Photogating-driven enhanced responsivity in a few-layered ReSe<sub>2</sub> phototransistor
Photogating-driven enhanced responsivity in a few-layered ReSe<sub>2</sub> phototransistor Open
The paper presents a thorough investigation of photoconductive properties of few layers of rhenium diselenide (ReSe 2 ). A correlation between responsivity ( R ) and power exponent ( γ ) indicates localized trap states plays a crucial role…
View article: Intrinsic Photoconductivity of Few-layered ZrS2 Phototransistors via Multiterminal Measurements
Intrinsic Photoconductivity of Few-layered ZrS2 Phototransistors via Multiterminal Measurements Open
We report intrinsic photoconductivity studies on one of the least examinedlayered compounds, ZrS2.Few-atomic layer ZrS2 field-effect transistorswere fabricated on the Si/SiO2 substrate and photoconductivity measurements were performed usin…
View article: High broadband photoconductivity of few-layered MoS<sub>2</sub>field-effect transistors measured using multi-terminal methods: effects of contact resistance
High broadband photoconductivity of few-layered MoS<sub>2</sub>field-effect transistors measured using multi-terminal methods: effects of contact resistance Open
Among layered 2D semiconductors, MoS2 is an excellent candidate for applications in optoelectronics and integrated circuits due to its layer-dependent tunable bandgap, high ON/OFF current ratio in FETs and strong light–matter interaction.
View article: Raman and electrical transport properties of few-layered arsenic-doped black phosphorus
Raman and electrical transport properties of few-layered arsenic-doped black phosphorus Open
Black phosphorus (b-P) is an allotrope of phosphorus whose properties have attracted great attention.
View article: The effect of Microstructure in Exchange Decoupling of SmCo5/Co bi-layers at low temperatures
The effect of Microstructure in Exchange Decoupling of SmCo5/Co bi-layers at low temperatures Open
Here, we investigated the influence of grain formation on the magnetization reversal of SmCo5/Co at low temperature. A set of SmCo5/Co bi-layer samples were fabricated under identical conditions on MgO(100) and glass substrates with a Cr u…
View article: Photoconductivity of few-layered p-WSe2 phototransistors via multi-terminal measurements
Photoconductivity of few-layered p-WSe2 phototransistors via multi-terminal measurements Open
Recently, two-dimensional materials and in particular transition metal dichalcogenides (TMDs) were extensively studied because of their strong light-matter interaction and the remarkable optoelectronic response of their field-effect transi…
View article: The effect of Microstructure in Exchange Decoupling of SmCo5/Co\n bi-layers at low temperatures
The effect of Microstructure in Exchange Decoupling of SmCo5/Co\n bi-layers at low temperatures Open
Here, we investigated the influence of grain formation on the magnetization\nreversal of SmCo5/Co at low temperature. A set of SmCo5/Co bi-layer samples\nwere fabricated under identical conditions on MgO(100) and glass substrates\nwith a C…
View article: Atypical Exciton–Phonon Interactions in WS<sub>2</sub> and WSe<sub>2</sub> Monolayers Revealed by Resonance Raman Spectroscopy
Atypical Exciton–Phonon Interactions in WS<sub>2</sub> and WSe<sub>2</sub> Monolayers Revealed by Resonance Raman Spectroscopy Open
Resonant Raman spectroscopy is a powerful tool for providing information about excitons and exciton-phonon coupling in two-dimensional materials. We present here resonant Raman experiments of single-layered WS2 and WSe2 using more than 25 …
View article: High\nPhotoresponsivity and Short Photoresponse Times in Few-Layered WSe<sub>2</sub> Transistors
High\nPhotoresponsivity and Short Photoresponse Times in Few-Layered WSe<sub>2</sub> Transistors Open
Here,\nwe report the photoconducting response of field-effect transistors\nbased on three atomic layers of chemical vapor transport grown WSe2 crystals mechanically exfoliated onto SiO2. We\nfind that trilayered WSe2 field-effect transisto…