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Experimental study of neutron irradiation effect on elementary semiconductor devices using Am-Be neutron source Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2021-01-12 H L Swami; Rajat Rathod; T Srinivas Rao; M Abhangi; S Vala; C Danani; P Chaudhuri; R Srinivasan
An experiment has been conducted to evaluate the lifetime, reliability and operational performance of elementary semiconductor devices in the neutron radiation environment which supports to reduce the fatal in measurements and plan the preventive actions in nuclear facilities. It will also support the enhancement of electronics for nuclear facilities. The elementary semiconductor devices used in the
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Structural, spectroscopic, electronic, and nonlinear optical behavior investigations of π conjugated organic nonlinear optical chalcone derivative 3-(2,3-dichlorophenyl)-1-(pyridine-2-yl)prop-2-en-1-one using DFT Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2021-01-12 Varsha Rani; Akansha Tyagi; Anuj Kumar
In this paper, we have reported the computational studies of structural, spectroscopicand electronic behavior of a chalcone derivative:3-(2,3- dichlorophenyl)-1-(pyridine-2- yl)prop-2-en-1-one (DCPP) nonlinear optical crystal. The geometry of DCPP molecule have been optimized using density functional theory (DFT) at B3LYP level having extended basis set 6-311++G(d,p) with the help of Gaussian 09W program
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Efficient Electrode Material based on Carbon Cloth Supported Polyaniline/Reduced Graphene Oxide Composites for Supercapacitor Application Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2021-01-12 Anjli Gupta; Anil Ohlan; Kuldeep Singh
Nowadays, world energy infrastructure is being stretched due to imbalance between energy production and energy consumption; renewable & sustainable energy storage and conversion techniques could resolve this issue. Thus global energy requirements, limited availability of fossil fuels and environmental crisis drive the expansion of alternative or non- conventional energy sources with high energy and
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A Combined Experimental and first principle studies on (ZnO)12 nanocluster Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2021-01-12 S Dheivamalar; K Bansura banu
We report the biogenic synthesis of ZnO nanoparticles using Mangifera indica aqueous extract and density functional theory/time-dependent density functional theory (DFT/TD-DFT) calculations on Zn12O12 nanocluster compared with various basis sets (B3LYP/6-31G, B3LYP/LANL2DZ, and B97D). The genesis of ZnO nanoparticles was achieved from the reduction of capping agent ZnSo4. The properties of ZnO nanoparticles
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A Study on Mechanical Properties and Water Absorption Behaviour of Jute Composites Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2021-01-12 Arunesh Chandra; Ayush Kumar Pandey; Bibekanand Pathak; Harish Kumar
Elimination of huge waste produced by mankind has become a sensitive issue in the present scenario. To preserve our earth and to make it pollution free, it becomes necessary to reduce the garbage causing pollution. Plant fibers are the best and abundant sources of natural reinforcement readily available. These fibers can be used for fabrication of composites which can reduce the problem of pollution
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Study of optical interaction between UO2++ and Ho3+ in zinc phosphate glass Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2021-01-12 Charu Ch Dhondiyal; Himani Tiwari; Tara Bhatt; Hema; Deepak Kumar Upreti; Bhawna Sanwal
A study of Non-radiative energy transfer in UO2-Ho system in zinc phosphate glass has been done by observing the steady state emission of UO2++ with varying concentration of Ho3+ in zinc phosphate glass at room temperature. It has been observed that UO2++ ion emission intensity decreases with increasing Ho3+ concentration resulting in a non-radiative energy transfer from UO2++ to Ho3+. The energy transfer
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Heat and mass transfer effect of a Magnetohydrodynamic Casson fluid flow in the presence of inclined plate Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2021-01-12 R Vijayaragavan; V Bharathi; J Prakash
The key purpose of this paper is to study the convection of a transient state in the flow of MHD Casson fluid over an inclined layer. In addition, the influence of the magnetic field, Dufour effects and heat suction / injection through porous medium are considered in the present analysis. By the Laplace transformation process, the analytical solutions of governing equations are established. By using
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Evaluation of third order nonlinear optical properties of SiO2/PVA-PEG Nanocomposites by Z-Scan Method Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2021-01-12 K Kannan; S Agilan; N Muthukumarasamy; G Vinitha; C Ramesh
SiO2 nanoparticles was synthesized by sol-gel method and polymer nanocomposites by solvo-casting method. XRD and SEM analysis have revealed the size, morphological structure and formation of SiO2/PVA-PEG polymer nanocomposites. The presence of hydrogen bond between SiO2 and PVA-PEG was proved with the help of Fourier Transform Infra Red Spectroscopy (FTIR). Further UV-Vis studies were used to find
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Physical properties of heteroatom doped graphene monolayers in relation to supercapacitive performance Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-25 Bharti; Arzu Karayel; Meenal Gupta; Gulzar Ahmad; Yogesh Kumar; Shatendra Sharma
Electrodes fabricated using graphene are quite promising for electric double layer capacitors. However graphene has the limitations of low ‘Quantum Capacitance (QC)’ near fermi level due to the presence of Dirac point that can be modified by doping graphenewith suitable dopant. The density functional theory DFT calculations are performed for doped graphene using Boron, Sulphur and phosphorus as dopants
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MHD variable viscosity mixed convection of nanofluid in a microchannel with permeable walls Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-25 Mesfin Zewde Kefene; Oluwole Daniel Makinde; Lemi Guta Enyadene
In this study, we examine the combined effects of buoyancy forces, pressure gradient, thermophoresis, Brownian motion, variable viscosity of nanofluid flow in a microchannel with suction and injection in the presence of uniform magnetic field imposed in cross-wise direction. It is assumed that the dynamic viscosity of the nanofluid is related with temperature exponentially and that the vertical parallel-plates
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Time-dependent oscillatory MHD flow over a porous vertical sheet with heat source and chemical reaction effects Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-25 Ram Prakash Sharma; M C Raju; S K Ghosh; S R Mishra; Seema Tinker
The current investigation focuses on unsteady, natural convection viscous incompressible, electrically conducting liquid motion over a vertical plane sheet flooded with permeable media with heat source and chemical reaction. A uniform magnetic field is applied in the transverse direction; the liquid augment in the water way determined by identical pressure, the transport of heat is inclined by radiation
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Electrochemical and lithium-ion transport properties of layered Li-rich Li1.10(Ni0.32X0.01Co0.33Mn0.33)O2 (X = Dy/Gd/Ho) positive electrodes Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-25 P Senthil Kumar; A Sakunthala; M V Reddy; R Prasada Rao; B V R Chowdari; S Adams
Layer structured Li1.10(Ni0.32X0.01Co0.33Mn0.33)O2 (X = Dy/Gd/Ho) compounds were synthesized via the microwave assisted solvothermal route. The impacts of doping on the electrical and electrochemical properties of Li1.10 (Ni0.32X0.01Co0.33Mn0.33)O2 compounds were investigated. Rietveld refined XRD pattern showed Li1.10 (Ni0.32X0.01Co0.33Mn0.33)O2 compounds with layered hexagonal structure. SEM images
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Modeling of soil water retention based on 3D micro-tomographic image analysis Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-25 JAT de Oliveira; L F Pires; FAM Cássaro; A M Brinatti; S C Saab
This paper proposes the use of an algorithm based on the mercury intrusion porosimetry (MIP) method to obtain the water retention characteristic curve (pF curve) of a soil under different treatments. 3D X-ray micro-tomographic images were used to quantify pore size distribution, which was employed for the evaluation of the water retention in different matric potentials. The results showed very good
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Synthesis and spectral analysis of (S)-7-(4-chlorophenyl)-6,7-dihydrothiazolo [4,5-d]pyrimidine-2,5(3H,4H)-dione and study of its quantum chemical properties Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-25 Huda Parveen; Abha Bishnoi; Aaherasha Iqbal; Nishat Afza; Sonam Rai
In this article, synthesis and quantum chemical properties of novel (S)-7-(4-chlorophenyl)-6,7-dihydrothiazolo[4,5-d]pyrimidine-2,5(3H,4H)-dione (CPTHZ) are described. The aim of this synthesis was to obtain biologically active thiazolidinone scaffolds and correlates its quantum chemical properties with its experimental results. The structure of the compound was characterized by using different spectral
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I – V characterization of vacuum deposited zinc selenide – silicon hetero junction Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-25 Rashmitha Keshav; Indudhar Panduranga Vali; P K Shetty; K S Vaishnavi; M Rajeshwari; M G Mahesha
Zinc selenide (ZnSe) thin films were grown on silicon (Si) wafer by thermal evaporation and the hetero-structure was subjected to annealing at various temperatures. X-ray diffractogram recorded for various samples were analysed to extract the structural information including crystallite size, strain and dislocation density. ZnSe films exhibited cubic structure with (111) orientation and the crystallite
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Electrical Properties of lead free ceremics Na1−XKxNbO3, at x=0.305. Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-03 Jyotsana Negi; Surendra Singh; N S Panwar
By solid state reaction method, ceramic pellets of Na0.695K0.305NbO3 have been prepared. X-ray- diffraction, Piezo properties, scanning electron microscope, and temperature dependence of dielectric constant and loss tangent of the prepared samples have been studied. It has been observed that, at the transition temperature, dielectric constant peak shifts to lower temperature, and the dielectric constant
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Investigating structure, magneto-electronic, and thermoelectric properties of the new d0 quaternary Heusler compounds RbCaCZ (Z = P, As, Sb) from first principle calculations Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-03 S Gheriballah; B Bouabdellah; A Oughilas; M A Boukli; M Rahmoune; A Sayede
The ab initio calculations based on the density functional theory (DFT) using the self-consistent full potential linearized augmented plane wave (FPLAPW) method were performed to explore the electronic structures, magnetic and thermoelectric properties of quaternary alloys RbCaCZ (Z = P, As, Sb) with quaternary Heusler structure. Results showed that FM-Y3 is the most favorable atomic arrangement. All
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Force and temperature analysis during distinct machining environment using an optimization approach Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-03 Anurag Sharma; R C Singh; Ranganath M Singari; S L Bhandarkar
Cryogenic cooling with liquid nitrogen has a wide field of scientific and engineering applications. The aim of the presented research work is to analyze the impact on cutting force and temperature during the LN2 single supply at (i) rake face and double supply (ii) rake and flank face of TiN coated carbide cutting tool during turning of AISI D3 steel. Taguchi based S/N ratio was used for Design of
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Effect of CNT on the growth and agglomeration of TiO2 nanoparticles Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-03 Hitesh Kumar Sharma; Sanjeev K Sharma; Sanjeev Kumar; Beer Pal Singh
Titanium dioxide nanoparticles (TiO2-NPs) are agglomerated by inclusion of CNTs during the nucleation and growth process using the hydrothermal method at 160 ⁰C. The content of C-atoms was determined from EDAX-spectra and line scan. The XRD peak of TiO2 indicated the rutile phase R(210), while CNT- TiO2 showed the anatase phase A(004). Williamson-Hall (W-H) models showed the linear fitted negative
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Performance Evaluation of a novel dense hybrid passive optical network for acceptable modulation technique using EDFA amplifiers Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-03 Ghanendra Kumar; Sandeep Kumar
Good rating services in terms of high speed data rate, good quality video signal and high speed telecommunication is the prime requirement for the current customers which have resolved in this research work for the first time best of our knowledge for 200 customers with the power amplification from EDFA optical amplifiers. Further, transmission of three play services signals have carried out from different
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Study of biocompatible polymer blend films with tuneable band gap Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-03 Vaishali Bhavsar; Deepti Tripathi
In present communication, an attempt is made to prepare and study structural, optical, and electrical properties of biocompatible polyvinylchloride (PVC)-polyvinylpyrrolidone (PVP) blend films taken in ratio of 1:1 doped with conducting polymer Polypyrrole (PPy).The XRD spectra revealed amorphous nature of all the films under investigation. The Fourier transform infra-red spectroscopy (FTIR) study
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Size and Structure Dependence of the Anomalous Bulk Modulus for FCC Metallic Nanoparticles Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-11-03 Esam H Abdul-Hafidh; Khalid S Alsadi
The purpose of this work is to develop a theoretical model to calculate the bulk moduli of FCC nanoparticles that account for their size and structure. The bulk modulus for spherical nanoparticles has been derived from the cohesive energy which had been calculated by summing up the potential energy function of every pair of atoms of these metallic nanoparticles. The ab initio pair potential energy
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Influence of substrate temperature on physical properties of MnSbInS4 thin films prepared by a simplified spray pyrolysis technique for photovoltaic applications Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-10-16 A Kennedy; V Senthil Kumar; K Pradeev Raj
MnSbInS4 multi-component semiconductor thin films are prepared by chemical spray pyrolysis on glass substrates at various substrate temperatures ranging from 250-400 °C with a constant spray time (5mins). The structural, morphological, optical and electrical properties of the thin films are investigated through different techniques such as X-ray diffraction (XRD), electron diffraction spectroscopy
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Investigation of vacuum evaporated SnTe thin films for their structural, electrical and thermoelectric properties Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-10-16 Praveen Tanwar; Sukhvir Singh; A K Panwar; A K Srivastava
Remarkable enhancement in figure-of-merit (ZT) value of p-type Tin Telluride (SnTe) thin films is reported in the present investigations. Under high vacuum conditions, all thin films deposited on the glass substrate by using thermal evaporation technique. Thickness of the thin films were kept 55 and 33 nm. Morphological features and the elemental composition of the thin film were investigated using
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Adaptation of counters redundant bits with the provision of dual supply and modified clock gating to favour of low power in VLSI Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-10-16 S Mohamed Sulaiman; B Jaison; M Anto Bennet; D Vaithiyanathan
The utilization of usual supply voltage and clock for repetitive state transistors in digital circuits is a fundamental driver for high power utilization. Most significant bit states of the counter stay longer than the least significant bit states and it has some repetitive states. To limit the supply voltage and stop the clock for MSB Flip Flop (FF) transistor, our method uses Control Combinational
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Brain wave classification for divergent hand movements Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-10-16 S Bagyaraj; S Apurva; R Asha; B Sangeetha; D Vaithiyanathan
Brain-Computer Interface (BCI) is an emerging technology in medical diagnosis and rehabilitation. In this study, by the acquisition of Electroencephalogram (EEG) signals from 30 healthy participants who perform four different hand movements, necessary features are extracted and classified to determine their accuracies. Statistical time domain features are extracted from the mu and beta frequency band
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Modulational instability of bright envelope soliton and rogue waves in ultra-relativistic degenerate dense electron-ion-positron plasma Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-10-16 S N Paul; A Roy Chowdhury
Modulational instability and bright envelope solitons of ion acoustic waves in dense plasma consisting of ultra-relativistic degenerate electrons and positrons, cold and mobile inertial ions, and negatively charged static dust particles have been investigated using Fried and Ichikawa method. Nonlinear Schrodinger equation has been derived and the growth rate of modulationally unstable ion acoustic
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Impact of hematocriton the flow of casson fluid in contact with jeffery fluid over a narrow pipe Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-10-16 P Devaki; A Subba Rao; Ram Prakash Sharma; S Sreenadh
The flow of Casson fluid in contact with Jeffery fluid in a tube with a small diameter is concentrated in this paper. Casson fluid is considered in the central region and Jeffery fluid in the outer region. The governing equations are solved analytically and obtained expressions for velocity, flux, effective viscosity, central hematocrit, and mean hematocrit in dimensional form. The effect of many physical
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Synthesis and characterization of crystalline polyaniline Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-10-16 Bharti Singh; B Das
The present paper deals with the synthesis and characterization of crystalline polyaniline (PANI). In the present work the crystalline PANI was synthesized in two steps. Firstly, the amorphous polyaniline was prepared by co-precipitation method using aniline as precursor and ammonium peroxodisulfate as reagent. In second stage the crystalline PANI was prepared by the melting and slow cooling. Pellets
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New hand-cart for Old-Delhi whole sale market designed and engineered using generic product development process Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-22 Amol; Sangeeta Pandit
The study aimed to design a hand cart for the cart puller in the old Delhi area. We used a Generic Product Development Process as a base to design and test our new cart design for the cart pullers. The process had been used in a sequential procedure to get the best design solution. It also saves time and money which would be wasted in the reiteration of the cart design. It starts with User Research
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Photon irradiation effects on electrical properties of n-ZnO/p-Si junctions for optoelectronic device Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-22 Shivangi S Patel; Bhaumik V Mistry; Sushant Zinzuvadiya; U S Joshi
Simple high energy laser photon irradiation is a handy tool to tune the functional properties of wide band gap oxide-based devices. Present study reports on the effects of laser photon irradiation on electrical transport behaviour of n-ZnO/p-Si p-n junctions. The n-type conductivity of ZnO was optimised by doping of stoichiometric amount of Al in ZnO. The n-ZnO/p-Si junctions were grown on p-Si (100)
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Silver ion conducting solid polymer electrolytes: Synthesis and ion transport studies Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-22 Angesh Chandra; Archana Chandra; R S Dhundhel; Alok Jain; Kiran Thakur; S S Thakur; Subhashis Basak; M Z Khan; Alok Bhatt
A new silver ion conducting Polyethylene Oxide (PEO) based solid polymer electrolyte (SPE) films: (1-x) PEO: xAgCl, where 0
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Design of SOI MOSFETs for Analog/RF Circuits Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-22 Manoj Singh Adhikari; Raju Patel; Suman Lata Tripathi; Yashvir Singh
In this paper, the concept of integration of a high voltage trench MOSFET (HVT MOSFET) and low voltage trench MOSFET (LVT MOSFET) is proposed. Insulator (Dielectric) isolation technique is used for the implementation of HVT and LVT MOSFETs on Silicon-on-Insulator (SOI) layer side by side. The HVT MOSFET consists of two gates which are placed in separate trenches in the drift region. The proposed structure
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Unsteady MHD oscillatory visco-elastic fluid flow through an inclined channel in presence of chemical reaction with Soret and Dufour effects Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-22 Utpal Jyoti Das; Sonam Dorjee
The purpose of present paper is to analyze the Soret and Dufour effects on an unsteady magneto hydrodynamic oscillatory flow of radiative, visco-elastic fluid through an inclined channel filled with saturated porous medium with non-uniform wall temperature in presence of first-order chemical reaction. The governing dimensionless momentum equation coupled with the energy and mass diffusion equations
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Quantitative analysis of Fe/Co co-doped ZnO by Rietveld method Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-22 Bidyarani Maibam; Saptaka Baruah; Beer Pal Singh; Sanjeev Kumar
Fe/Co co-doped Zinc oxide was prepared by using hydrothermal method. Refinement of recorded X-ray diffractograms was done by Rietveld method by using MAUD. It shows that all the samples have a hexagonal structure with space group P63mc and the average crystallite size of the samples lie between 49-79 nanometers. Presence of some secondary phases were also detected. Rietveld analysis data reveals that
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Intermolecular interaction studies of binary liquid mixtures of 2-methyl cyclohexanone with o-anisidine/m-anisidine/p-anisidine in terms of thermo-acoustic parameters at different temperatures Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-22 G Venkata Gangadhara Rao; Shaik Babu; T Kalimulla; K Govind Rao
In this present investigation, the thermo-acoustic fundamental parameters such as density (ρ) and speed of sound (U) were measured experimentally for the anisidine isomers (2-methoxy aniline, 3-methoxy aniline and 4-methoxy aniline) with solvent agent such as 2-methyl cyclohexanone in various concentrations within temperatures from 303.15 to 313.15K (5K interval) at ambient atmospheric pressure. From
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Enhancement in structural, morphological and optical features of thermally annealed zinc oxide nanofilm Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-14 Namrata Saxena; Varshali Sharma; Ritu Sharma; K K Sharma; Kapil Kumar Jain; Santosh Chaudhary
This paper presents the study of surface morphological, optical and microstructural features of zinc oxide (ZnO) nanofilm layered upon p-type Si substrate of <100> orientation by employing conventional RF magnetron sputtering system at different annealing temperatures. The effect of annealing on the nano-film is examined using different characterization techniques such as Atomic Force Microscopy (AFM)
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Design and analysis of effective graded microwave absorbing material for low observable technology Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-14 S P Mishra; S Garnayak; R K Bhuyan; G Nath
Compositional designing of effective graded radar absorbing material for low observable technology is always a challengeable task in material science. The micro scale or quantum scale interaction of electromagnetic radiation is depends on the characteristic property of each atom or their assembly in a material composition. The filler and matrix in a composite structure plays a vital role between the
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Optimization of SASE operation for an X-ray free-electron laser Using multiple objective evolutionary algorithms Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-14 Ayhan Aydin; Bora Ketenoglu; Erkan Bostanci
Performance of Self Amplifed Spontaneous Emission (SASE) operation for an X-ray Free-Electron Laser (FEL), is optimized by Multiple Objective Evolutionary Algorithms (MOEA). Different types of hybrid planar undulators are considered to achieve 0.5 Å ≤ λFEL ≤ 1.5 Å wavelength range. This demand is regarded as a continuous optimization problem, and hence, an evolutionary algorithm is designed to find
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Impact of High Speed Differential Quadrature Amplitude Modulation using Hybrid Optical Amplifier for Super Dense Wavelength Division Multiplexing System Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-14 Chakresh Kumar; Rakesh Goyal
In this paper, a Differential Quadrature Amplitude Modulation (DQAM) technique for 200 x100 Gbps Super Dense Wavelength Division Multiplexing (SD-WDM) system is proposed. Optimized rating outcome in terms of the quality factor, bit error rate, crosstalk, and acceptable minor effect of the channel spacing with the support of RAMAN-EDFA-RAMAN Hybrid Optical Amplifier (HOA) is reported.
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Multiple Bandwidth FIR Filter Design with Adaptive Algorithms for Hearing Aid Systems Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-14 K Mariammal; R SherinMary; J Brittopari; D Vaithiyanathan
Digital Filter design plays a vital role in signal processing and communication applications. This paper proposes a hearing loss system model with Variable Bandwidth FIR Filter (VBF) and adaptive algorithms for the application to listening. The tunable band filter is designed to provide an appropriate sound level. This filter has several sub-filters each of which is designed with set of selected bandwidths
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Novel Current-Mode Universal Filter using single FTFNTA Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-14 Ravendra Singh; Dinesh Prasad
In this paper, a novel universal filter using single Four Terminal Floating Nullor Transconductance Amplifier (FTFNTA), two capacitors and one/two resistor has been proposed. Sensitivity of pole frequency (ω0) and quality factor (Q0) is analysed. Workability of proposed filter has been demonstrated by PSPICE simulations in 0.18µm TSMC CMOS technology.
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Molecular structure and vibrational spectra of 2, 4, 6 -trimethylbenzene sulphonyl chloride (FTIR & Raman) by quantum chemical calculations Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-09-14 K Sambathkumar
The 2, 4, 6-trimethylbenzene sulphonyl chloride was characterized using IR and Raman spectral data. The molecular electrostatic potential surface of the 2,4,6-trimethylbenzene sulphonyl chloride (TMBS) has been visualized in electropositive potential in the region of the CH3+ group and most electronegative potential in the two oxygen atom has strong binding group. The HOMO and LUMO energies and electronic
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Amplitude modulation and demodulation of a coherent electromagnetic wave in magnetized doped III-V semiconductors Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-24 Anita Sangwan; Navneet Singh
This present paper is concerned with the analytical study of the amplitude modulation and demodulation of a coherent electromagnetic wave in magnetized doped III-V semiconductors. Utilizing the hydrodynamic model of a semiconductor plasma, the modulation indices for upper (+) and lower (–) side bands have been obtained. The incorporation of carrier diffusion in the nonlinear laser-semiconductor interaction
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Influence of Soret and Dufour effect on MHD flow over an exponential stretching sheet: A numerical study Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-24 Seema Tinker; S R Mishra; Ram Prakash Sharma
The present paper analyzes the effect of chemical reaction on free convection MHD motion of steady, laminar, incompressible liquid under the influence of heat source/sink. The motion is considered over an exponential radiative extending surface with a magnetic field. An appropriate similar transformation is employed to convert the nonlinear system of partial differential equations (PDEs) to a set of
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Radiation and chemical reaction effects on MHD Casson fluid flow past a semi-infinite vertical moving porous plate Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-24 A Sandhya; G Venkata Ramana Reddy; G V S R Deekshitulu
A speculative investigation has been presented to explore the significant features of MHD convective Casson fluid flow past a semi-infinite moving vertical porous plate with heat source/sink are included in the flow configuration. The governing partial differential equations are remodeled into ordinary differential equations using appropriate non-dimensional variables. The ensuing differential equations
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Finite element scheme for MHD forced convection flow near stagnation point and heat transfer by Newtonian heating, constant wall temperature and constant heat flux Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-24 Santosh Chaudhary; Mohan Kumar Choudhary; Susheela Chaudhary
Two dimensional, steady, forced convection magnetohydrodynamic flow of an incompressible, viscous electrically conducting fluid in a forward stagnation region of an infinite solid surface with Newtonian heating, constant wall temperature and constant heat flux has been investigated. Governing partial differential equations for the exploration have been formulated and converted to nonlinear ordinary
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Development of vacuum compatible, multi-mode operation light source Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-24 Anshul Kumar Porwal
Light sources are used extensively at various stages of development and characterization of an electro-optical (EO) payload like Cartosat, HySIS, Microsat etc. These sources are required to characterize many critical parameters of EO payload like photo response non uniformity (PRNU), noise performance, saturation radiance etc. Currently integrating sphere with quartz tungsten halogen (QTH) lamp is
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Grounded capacitors single resistance controlled oscillator using single FTFNTA Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-24 Dinesh Prasad; Ravendra Singh; Ashish Ranjan; Huirem Tarun Kumar
In this manuscript, grounded capacitor single resistance controlled oscillator using four terminal floating Nullor transconductance amplifier (FTFNTA) is presented. It requires only one FTFNTA, two grounded resistors and two grounded capacitors. Oscillation condition (OC) and oscillation frequency (OF) are solely controlled through resistors. The non-ideal behaviour of the proposed structure has also
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In-situ polymerization of pyrrole in PVA-PVP matrix: Optimization of oxidant/monomer ratio and its effect on dielectric properties of polymer blend films Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-24 Sushma Jha; Deepti Tripathi
Free standing and flexible polymer blend films of PPy (poly pyrrole) doped in PVA (poly vinyl alcohol) – PVP (poly vinyl pyrrolidone) matrix with varying concentrations of PPy have been prepared by solution cast technique at room temperature. In-situ polymerization of pyrrole monomer (Py) in PVA-PVP matrix has been carried out using FeCl3 as oxidant. The effect of monomer amount and monomer to oxidant
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Examining the spectroscopic features and quantum chemical computations of a Quinoline derivative: Experimental and theoretical insights into the photophysical characteristics Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-24 Kalpana Sharma; Raveendra Melavanki; V T Muttannavar; J Thipperudrappa; N R Patil; Raviraj Kusanur
The solvatochromic studies in a Quinoline derivative molecule namely Quinolin-8-ol (QO) have been carried out at ambient temperature using absorption and fluorescence spectroscopy. The QO molecule shows the bathochromic shift with increase in solvent polarity demonstrating π → π* transition. The solvatochromic data coupled with quantum mechanical calculations has been used to estimate change in dipole
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Study of parametric variations on hetero-junction vertical t-shape TFET for suppressing ambipolar conduction Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-05 Shailendra Singh; Balwinder Raj
This paper investigates a hetero-junction vertical t-shape tunnel field effect transistor and discussed various methods for the suppression of ambipolar conduction for the first-time utilizing computer aided design sentaurus simulation tool. This device is primarily consisting of dual gate silicon based gated p-i-n diode for eminent control over the channel. Further, introduction to the 10 nm silicon
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Performance of ZnO-Nb2O5 core/shell and aluminium doped ZnO electron transporting layer with CdS/CdSe quantum dot-sensitized solar cells Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-05 P Venkatachalam; S Rajalakshmi
In the present investigation, solar cells have been fabricated using Cds/CdSe quantum dots sensitized ZnO photoanode for solar cell application. Photocurrent-voltage analysis and electrochemical impedance spectroscopy (EIS) measurements have been performed to investigate the electron transport and recombination of charge carriers in quantum dot-sensitized solar cells (QDSSCs) based on ZnO photoanodes
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Computational studies for the effective electrical conductivity of Copper powder filled LDPE/LLDPE composites Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-05 R P Singh; Sukhmander Singh; Reenu Gill; Rishi Kumar; Pradeep Sharma; Gurupal Kumar; Adriaan S Luyt
The effective electrical conductivity (EEC) of low density polyethylene (LDPE) and linear low density polyethylene (LLDPE) polymer composites filled with copper has been studied. The nonlinear behavior has been observed for effective electrical conductivity versus filler content. Several approaches have been described to predict the electrical conductivities of polymer composites. EEC is described
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Dielectric dispersion study of binary mixtures of methyl ethers with water at 298.15 K using frequency domain technique Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-05 J B Shinde; D N Rander; K S Kanse; Y S Joshi; A C Kumbharkhane
A precision LCR meter along with a liquid dielectric cell have been used to measure the capacitance and resistance of the binary mixtures of methyl ethers with water at 298.15 K in the frequency range of 20 Hz to 2 MHz. The measured values are used to compute the complex dielectric permittivity ε*(ω). The parameters like complex electrical modulus M*(ω), complex electrical conductivity σ*(ω) and loss
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Dielectric properties of soil mixed with urea fertilizer over 20 Hz to 2 MHz frequency range Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-05 P D Chaudhary; V N Patel; V A Rana; D H Gadani
The dielectric properties of sandy soil for various moisture contents of distilled water and Urea-fluid solutions in soil are estimated in the lower frequency range from 20 Hz to 2 MHz using precision LCR meter. The spectra of complex permittivity e*(ω), loss tangent tan δ(ω), electrical conductivity σ*(ω), and complex impedance Z*(ω) plane plots of these soil-fluid system have been investigated for
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Glass forming ability of ZBLAN glass Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-05 Prapti B Pandya; Arun Pratap
A ZBLAN glass of the following composition: 53 mol.% ZrF4, 20 mol.% BaF2, 4 mol.% LaF3,3 mol.% AIF3, 20 mol.% NaF is studied for predicting its glass forming ability (GFA). The GFA of a ZBLAN glass is evaluated by estimating the Gibbs free energy difference (ΔG) between the undercooled liquid and the corresponding equilibrium solid phases. Other GFA criteria (Trg=Tg/Tl, Tx/Tl, γ=Tx/Tg+Tl, ΔTxg=Tx-Tg
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Estimation of sea water salinity from dielectric measurements: Effect of temperature Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-08-05 F M Modi; D H Gadani; V A Rana
Dielectric measurements have been carried out for distilled water and saline water solutions of salinities 10000, 20000, 30000, 40000 ppm, as well as sea water of Diu beach area, using Anritsu Shockline Vector Network Analyzer (VNA, model no: MS46322A) in the frequency range from 1 GHz to 20 GHz, over the temperatures of 20°, 30° and 40 °C. From the measured values of dielectric constant and dielectric
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Effect of projectile breakup in the system 19F + 154Sm Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-07-23 Amritraj Mahato; Pankaj K Giri; D Singh; Nitin Sharma; Sneha B Linda; Harish Kumar; Suhail A Tali; Nabendu K Deb; M Afzal Ansari; R Kumar; S Muralithar; R P Singh
An attempt was made to understand the role of various entrance channel parameters on incomplete fusion dynamics by the measurements of excitation functions of evaporation residues populated via complete and incomplete fusion dynamics in the system 19F + 154Sm at projectile energy ≈ 4-6 MeV/A. The stacked foil activation technique followed by offline gamma ray spectrometry was employed in these measurements
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Quasi-elastic scattering measurements of the 28Si + 142Nd system at back-angle Indian J. Pure Appl. Phys. (IF 0.653) Pub Date : 2020-07-23 Saumyajit Biswas; A Chakraborty; A Jhingan; D Arora; B R Behera; Rohan Biswas; Nabendu Kumar Deb; S S Ghugre; Pankaj K Giri; K S Golda; G Kaur; A Kumar; M Kumar; B Mukherjee; B K Nayak; A Parihari; N K Rai; S Rai; R Raut; Rudra N Sahu; A K Sinha
The barrier distribution of a system can be extracted from excitation function data obtained either through fusion reaction or through quasi-elastic scattering measurement. In the present work, the quasi-elastic excitation function has precisely been measured at back angle for the 28Si + 142Nd system at energies around the Coulomb barrier and the corresponding experimental barrier distribution has