Browsing Department of Physics by Title

Now showing items 431-450 of 793

N-plasma assisted MBE grown GaN films on Si(111)

Gangopadhyay, Subhashis (Wiley, 2006-06)

GaN films were grown by rf-plasma assisted molecular beam epitaxy on nitrified Si(111) surfaces. Scanning tunneling microscopy (STM), low energy electron diffraction (LEED), and X-ray photoelectron spectroscopy (XPS) have ...
Nanoribbons of discotic liquid crystal molecules

Gupta, Raj Kumar; Manjuladevi, V. (Elsevier, 2021)

Discotic liquid crystal molecules are interesting not only due to their mesophases as a function of temperature but also due to their potential to self-assemble into nanostructures. In this article, we facilitate the ...
Natural saponin stabilized nano-catalyst as efficient dye-degradation catalyst

Gangopadhyay, Subhashis (Elsevier, 2018-10)

Silver nanoparticles decorated reduced graphene oxide is a well-established nanoparticle for multifunctional applications. Herein, the aim of the work is to prepare the nanoparticles in an in situ green reduction fashion ...
Near-infrared study of the Carina Nebula

Vaidya, Kaushar (IOP, 2007)

We have carried out near-infrared (NIR) imaging observations of the Carina Nebula for an area of ~400 arcmin2 including the clusters Trumpler 14 and Trumpler 16, with 10 σ limits of J ~ 18.5, H ~ 17.5, and Ks ~ 16.5 mag. ...
Nematic liquid crystal dispersed with two-dimensional functionalised graphene oxide (fGO): insights on improving the nematic ordering and reducing electro-optic response time

Manjuladevi, V.; Gupta, Raj Kumar (Taylor & Francis, 2024-01)

Doping a nematic liquid crystal (NLC) with nanoparticles (NPs) of varied dimensions and properties to form LC-NP nanocomposites with improved electro-optic and dielectric properties has recently been a much-explored field ...
A neural network regression model for estimating the lifespan of a Fibre Bundle

Singh, Navin (IOP, 2023-09)

Fibre Bundle Models (FBMs) use generalized distributions like the Weibull distribution to study the failure mechanics of disordered material under different load-sharing schemes. Here we attempt to use a simple neural ...
Neutrino anomalies in a gauge mediated model with trilinear R violation

Vaidya, Rishikesh (APS, 2002-02)

The structure of neutrino masses and mixing resulting from trilinear R violating interactions is studied in the presence of gauge mediated supersymmetry breaking. Neutrino masses arise in this model at the tree level through ...
Neutrino constraints on inelastic dark matter captured in the Sun

Chauhan, Bhavesh (IOP, 2024-01)

The flux of neutrinos from annihilation of gravitationally captured dark matter in the Sun has significant constraints from direct-detection experiments. However, these constraints are relaxed for inelastic dark matter as ...
Neutrino interaction vertex reconstruction in dune with pandora deep learning

Chauhan, Bhavesh (2025)

The Pandora Software Development Kit and algorithm libraries perform reconstruction of neutrino interactions in liquid argon time projection chamber detectors. Pandora is the primary event reconstruction software used at ...
Neutron scattering studies of glassy Li+ superionics

Dalvi, Anshuman (American Physical Society, 2013-03)

Two distinct neutron scattering techniques were implemented in the study of glassy superionic materials composed of a complex network of their interconnected sub-units: Li2O, NH4H2PO2, and Li2SO4. The use of disordered ...
Neutron Scattering Studies of Glassy Solid-State Lithium Ion Based Electrolytes

Dalvi, Anshuman (CUP, 2013-09)

We present neutron diffraction results on superionic materials that are good candidates for use as solid-state electrolytes in next generation Li+ ion batteries. Lithium ion conducting glasses of the compositions xLi2SO4-(1-x) ...
Neutron Scattering Studies of Lithium-Ion Diffusion in Ternary Phosphate Glasses

Dalvi, Anshuman (CUP, 2016-06)

We have studied the diffusion mechanism of lithium ions in glassy oxide-based solid state electrolytes using elastic and quasielastic neutron scattering. Samples of xLi2SO4-(1-x)(Li2O-P2O5) were prepared using conventional ...
New generation Li+ NASICON glass-ceramics for solid state Li+ ion battery applications

Dalvi, Anshuman (AIP, 2018-04)

Lithiumion conducting NASICON glass-ceramics have been prepared by a novel planetary ball milling assisted synthesis route. Structural, thermal and electrical investigations have been carried out on the novel composites ...
New geometry for the quasi-binary incident electron–centre of mass collision in (e, 3e) process on He

Choubisa, Rakesh (IOP, 2008-01)

We present in this paper the results of our calculation of five-fold differential cross sections (FDCS) in a new geometrical arrangement (constant theta-12-phi-12 mode) for the study of the quasi-binary incident electron–centre ...
New Insights into Applicability of Electron-Counting Rules in Transition Metal Encapsulating Ge Cage Clusters

Bandyopadhyay, Debashis (ACS, 2010-11)

The relative stability of Sc, Ti, and V encapsulating Gen clusters in the size range n = 14−20 has been studied through first-principles electronic structure calculations based on density functional theory. Variations of ...
Non-Hermitian Aubry-André-Harper model with short- and long-range p-wave pairing

Bandyopadhyay, Jayendra N. (ARXIV, 2023-11)

We investigate a non-Hermitian Aubry-Andre-Harper model, considering both the short- and long-range p-wave pairing. Here, the non-Hermiticity is considered at the onsite potential. A comprehensive analysis of several ...
Nonstandard signatures of vectorlike quarks in a leptophobic 221 model

Mondal, Tanmoy (APS, 2019-06)

We consider vectorlike quarks in a leptophobic 221 model characterized by the gauge group 𝑆⁢𝑈⁢(2)𝐿×𝑆⁢𝑈⁢(2)2×𝑈⁢(1)𝑋, where the 𝑆⁢𝑈⁢(2)2 is leptophobic in nature. We discuss the pattern of mixing between Standard ...
A note on oscillating strings in AdS3×S3 with mixed three-form fluxes

Banerjee, Aritra (Springer, 2015)

We present a detailed study of the pulsating string solutions in AdS3 × S 3 supported by both RR and NS-NS fluxes. This background has recently been proved to be integrable. We find the dispersion relation between the ...
A novel approach for the growth of InGaN quantum dots

Gangopadhyay, Subhashis (Wiley, 2006-11)

A novel two-step growth method for creating InGaN quantum dots (QDs) was developed by using a combination of an Inx Ga1–x N nucleation layer with a platelet structure and an Iny Ga1–y N formation layer with an indium content ...
Novel high contrast electrochromic polymer materials based on 3,4-propylenedioxythiophene

Nair, Sindhu S. (Elsevier, 2007-09)

Mono and di allyl and napthyl substituted 3,4-propylenedioxythiophenes were synthesized and polymerized electrochemically. All the monomers were characterized for their molecular structures, and the polymers were characterized ...

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