ADVANCES IN BASIC SCIENCE (ICABS 2019)最新文献

{"title":"Radiation induced effects on silk fibroin films","authors":"S. Asha, N. Parushuram, K. Harish, S. Ganesh, Y. Sangappa","doi":"10.1063/1.5122576","DOIUrl":"https://doi.org/10.1063/1.5122576","url":null,"abstract":"In the present work, the Bombyx mori silk fibroin films have been prepared by solution casting method and irradiated with high energy electrons. The electron irradiation induced modifications in the samples were examined for structural, optical and thermal properties using X-ray diffraction (XRD), UV-Visible spectroscopy (UV-Vis) and thermogravimetric (TGA) analysis. The XRD study revealed that the structural parameters like crystallite size, crystallinity decreases with increasing radiation dose. UV-Vis study indicates the red shift after irradiation. The thermal stability of the samples decreased with irradiation.In the present work, the Bombyx mori silk fibroin films have been prepared by solution casting method and irradiated with high energy electrons. The electron irradiation induced modifications in the samples were examined for structural, optical and thermal properties using X-ray diffraction (XRD), UV-Visible spectroscopy (UV-Vis) and thermogravimetric (TGA) analysis. The XRD study revealed that the structural parameters like crystallite size, crystallinity decreases with increasing radiation dose. UV-Vis study indicates the red shift after irradiation. The thermal stability of the samples decreased with irradiation.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73070558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preface: Advances in Basic Sciences (ICABS19)","authors":"GaurSanjay, GhoshArindam, SinghVijender","doi":"10.1063/1.5122323","DOIUrl":"https://doi.org/10.1063/1.5122323","url":null,"abstract":"","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"117 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75652092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of dichroic dye on absorption coefficient and electro-optic performance of nano particles induced homeotropic aligned liquid crystal","authors":"Chinky, Pankaj Kumar, V. Sharma, Ridhima Gahrotra, P. Malik, K. Raina","doi":"10.1063/1.5122513","DOIUrl":"https://doi.org/10.1063/1.5122513","url":null,"abstract":"Effect of dichroic dye on nano particles induced homeotropic aligned liquid crystal (HALC) cells was studied for an enormous approach in display technology. The measurements of absorption coefficient and electro-optic (E-O) performance of HALC cells doped with two different concentrations (wt. /wt. ratio) of 0.25% and 0.5% of dichroic dye reveal that higher dye concentration lowered the values of threshold as well as operating voltages. However, contrast ratio (CR) and absorption coefficient (β) have been found to be reduced with higher dye concentration due to increase in off state transmittance.Effect of dichroic dye on nano particles induced homeotropic aligned liquid crystal (HALC) cells was studied for an enormous approach in display technology. The measurements of absorption coefficient and electro-optic (E-O) performance of HALC cells doped with two different concentrations (wt. /wt. ratio) of 0.25% and 0.5% of dichroic dye reveal that higher dye concentration lowered the values of threshold as well as operating voltages. However, contrast ratio (CR) and absorption coefficient (β) have been found to be reduced with higher dye concentration due to increase in off state transmittance.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78734377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface functionality and optical band gap studies of [CdCl4]− [C17H14O5S]+ hybrid material","authors":"Kuldeep Kumar, Ajit Kumar, Dinesh Jasrotia, S. Verma, P. A. Alvi","doi":"10.1063/1.5122458","DOIUrl":"https://doi.org/10.1063/1.5122458","url":null,"abstract":"An inorganic-organic hybrid material of cadmium chloride and phenol red has been prepared by solution growth through slow cooling process. The hybrid material was studied through powder XRD pattern which shows that the material has been grown in monoclinic space group P21 with the cell parameters of a = 6.231, b = 4.873, c = 3.412 and b = 93.85o. The surface functionality has been performed through FESEM analysis which depicts the grain size of 90 nm of the hybrid materials and the solidity of the material = 0.98. The direct band gap of 3.09eV has been calculated from the UV-Vis absorption spectrum which indicates that the hybrid material has potential band gap transitions and hence can be used in optical energy storage devices.An inorganic-organic hybrid material of cadmium chloride and phenol red has been prepared by solution growth through slow cooling process. The hybrid material was studied through powder XRD pattern which shows that the material has been grown in monoclinic space group P21 with the cell parameters of a = 6.231, b = 4.873, c = 3.412 and b = 93.85o. The surface functionality has been performed through FESEM analysis which depicts the grain size of 90 nm of the hybrid materials and the solidity of the material = 0.98. The direct band gap of 3.09eV has been calculated from the UV-Vis absorption spectrum which indicates that the hybrid material has potential band gap transitions and hence can be used in optical energy storage devices.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"103 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80787352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocatalytic degradation efficiency of malachite green in aqueous medium using poly(azomethine)/ZnO nanocomposite","authors":"K. Sampath, S. Pradeeba, K. Kalapriya","doi":"10.1063/1.5122552","DOIUrl":"https://doi.org/10.1063/1.5122552","url":null,"abstract":"The photocatalytic efficiency of the poly(azomethine)/zinc oxide (PNZ) nanocomposites was evaluated for the removal of toxic effluent, Malachite green in the presence of natural sunlight. The photocatalytic efficiency of the PNZ was explored with different parameters and reaction conditions. From the photocatalytic experiments, the deprivation efficiency wasevaluated which reveals that the PNZ nanocomposites exhibited excellent photocatalytic activity than the polymer, poly(azomethine) (PAZ), and nanoZnO (ZnO). The PNZ nanocomposite showed maximum degradation efficiency of 95 % at optimum catalyst dosage (500 mg) with low dye concentration. The main aim of this research was to protect our environment from the contamination of effluence released from dyestuff industries using effective nanocomposite.The photocatalytic efficiency of the poly(azomethine)/zinc oxide (PNZ) nanocomposites was evaluated for the removal of toxic effluent, Malachite green in the presence of natural sunlight. The photocatalytic efficiency of the PNZ was explored with different parameters and reaction conditions. From the photocatalytic experiments, the deprivation efficiency wasevaluated which reveals that the PNZ nanocomposites exhibited excellent photocatalytic activity than the polymer, poly(azomethine) (PAZ), and nanoZnO (ZnO). The PNZ nanocomposite showed maximum degradation efficiency of 95 % at optimum catalyst dosage (500 mg) with low dye concentration. The main aim of this research was to protect our environment from the contamination of effluence released from dyestuff industries using effective nanocomposite.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"195 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75880088","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrical conductivity of magnesium ferrite prepared by sol-gel auto combustion technique","authors":"Sudhanshu Kumar, K. Sreenivas","doi":"10.1063/1.5122341","DOIUrl":"https://doi.org/10.1063/1.5122341","url":null,"abstract":"Magnesium ferrite (MgFe2O4) powder has been synthesized by sol-gel auto combustion method using DL-alanine fuel. The obtained as-burnt powder was annealed at different temperatures in the range 600 to 1300 °C for 4 hrs. Phase pure powders are obtained at an optimum temperature of 900 °C, and the residual carbon, nitrogen and hydrogen content in the inorganic MgFe2O4 are found to be low. Highly resistive MgFe2O4 ceramics are obtained by sintering at 1200 °C, and are found to exhibit semiconducting behavior as analyzed from the frequency and temperature dependent ac conductivity.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"86 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78724418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of surfactant on structural and optical properties of ZnO nanorods by wet chemical synthesis","authors":"A. Kiruthiga, T. Krishnakumar, R. Kannan","doi":"10.1063/1.5122566","DOIUrl":"https://doi.org/10.1063/1.5122566","url":null,"abstract":"ZnO nanoparticles have drawn a widespread attention recently due to their novel properties which contribute to various applications especially in gas sensing and optoelectronic devices. This paper presents a surfactant-assisted complex wet chemical method for the controlled preparation of Zinc Oxide (ZnO) nanoparticles using zinc acetate as starting material. Here, the spherical ZnO nanoparticles with average size of less than 50 nm were successfully synthesized and their optical properties were analysed. In order to maximize its efficiency, surface modification with surfactants is vital as ZnO nanoparticles easily agglomerate. The effects of the surfactant on the average particle size and morphology of the ZnO nanoparticles were investigated using X-ray diffraction. Well dispersed ZnO nanoparticles with a uniform size distribution were obtained using Poly Vinyl Alcohol (PVA) as a surfactant. The addition of surfactants controlled the particle size and reduced the formation of agglomerates and at the same time helped to produce more homogenous and uniformly dispersed particles.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79422261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The conductive heterojunctuon device of graphene and MoS2","authors":"R. Tomar, Kajol Taiwade, P. Ojha","doi":"10.1063/1.5122514","DOIUrl":"https://doi.org/10.1063/1.5122514","url":null,"abstract":"This paper reports the estimation of graphene thickness, done by the intensity ratio of the 2D band to the G band and the ration is found to be 1.91 which suggests, it is monolayer and bilayer MoS2. The RAMAN spectra shows presence of crystalline defects, considering high D/G ratio. The heterostructure device synthesized shows linear conductivity, making it a conductive device. These devices exhibit a promising device for a new generation of transparent, high performance, high response gas sensors and optoelectronic devices. The heterostructure device of graphene and MoS2 show promise for enhanced performance in photo detectors and phototransistors; with electrostatic coupling and high current capacity. This synthesis approach is used to fabricate a MoS2/Graphene on copper foil by growing large scale uniform MoS2 on graphene.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"305 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76886262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis, characterization and device simulation of the thin films of CH3NH3PbI3 perovskite absorber and CdS buffer layer","authors":"Khursheed Ahmad Parrey, Nisha, A. Aziz, S. Ansari, A. Niazi","doi":"10.1063/1.5122439","DOIUrl":"https://doi.org/10.1063/1.5122439","url":null,"abstract":"Here we synthesized halide perovskite absorber CH3NH3PbI3 and CdS as charge transporting layer for perovskite photovoltaic device. Perovskite absorber and CdS were characterized by X-ray diffraction, UV-Visible spectrophotometry and SEM. The energy gap and structure of CH3NH3PbI3 and CdS were found to be suitable for use as absorber and electron transporting layer in perovskite solar cell device respectively. Numerical simulation of CH3NH3PbI3 perovskite solar cells was then carried out using the SCAPS-1D solar cell capacitance simulator software. A perovskite solar cell was simulated for best efficiency by replacing the traditional compact TiO2 layer with CdS (i.e., a hole-blocking layer) because CdS layers possess a greater photostability than TiO2 with continuous illumination of sunlight. We investigated the effect of layer parameters like absorber thickness, bulk defects, and interface defects on the device performance of CdS based perovskite photovoltaic device. It was observed that these parameters have strong impact on open circuit voltage Voc, short circuit current Isc, fillfactor (FF) and the power conversion efficiency. The device characteristics and optimization of the solar photovoltaic device was recorded and presented in paper.Here we synthesized halide perovskite absorber CH3NH3PbI3 and CdS as charge transporting layer for perovskite photovoltaic device. Perovskite absorber and CdS were characterized by X-ray diffraction, UV-Visible spectrophotometry and SEM. The energy gap and structure of CH3NH3PbI3 and CdS were found to be suitable for use as absorber and electron transporting layer in perovskite solar cell device respectively. Numerical simulation of CH3NH3PbI3 perovskite solar cells was then carried out using the SCAPS-1D solar cell capacitance simulator software. A perovskite solar cell was simulated for best efficiency by replacing the traditional compact TiO2 layer with CdS (i.e., a hole-blocking layer) because CdS layers possess a greater photostability than TiO2 with continuous illumination of sunlight. We investigated the effect of layer parameters like absorber thickness, bulk defects, and interface defects on the device performance of CdS based perovskite photovoltaic device. It was observed that these parameters ...","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77927806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Angular and impact energy dependence of intensity ratio of Kα,β x-rays to bremsstrahlung radiation emitted from 10-25 keV electrons incident on a pure thick Cu (Z=29) target","authors":"S. Prajapati, Bhupendra Singh, B. Singh, X. Llovet, R. Shanker","doi":"10.1063/1.5122519","DOIUrl":"https://doi.org/10.1063/1.5122519","url":null,"abstract":"The variation of relative intensity ratios of the characteristic K x-ray lines, namely, Kα and Kβ to that of the underneath BS radiation as a function of incidence angle 15°-75° under bombardment of 10-25 keV-electrons on a pure thick target of polycrystalline Cu (Z=29) in the reflection geometry mode using a Si PIN photodiode detector has been studied. The comparison of experimental results with those of MC simulations using PENELOPE code shows a good agreement between experiment and theory within the error of measurements for both angular and energy dependence of the considered ratios. The details of these results are presented and discussed in this work.The variation of relative intensity ratios of the characteristic K x-ray lines, namely, Kα and Kβ to that of the underneath BS radiation as a function of incidence angle 15°-75° under bombardment of 10-25 keV-electrons on a pure thick target of polycrystalline Cu (Z=29) in the reflection geometry mode using a Si PIN photodiode detector has been studied. The comparison of experimental results with those of MC simulations using PENELOPE code shows a good agreement between experiment and theory within the error of measurements for both angular and energy dependence of the considered ratios. The details of these results are presented and discussed in this work.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"154 8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83142774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}