ADVANCES IN BASIC SCIENCE (ICABS 2019)最新文献

{"title":"Electrical characterization and dielectric behavior of PbO·Bi2O3·Ga2O3 glasses","authors":"R. Bala, A. Agarwal, S. Sanghi, Sanjay","doi":"10.1063/1.5122424","DOIUrl":"https://doi.org/10.1063/1.5122424","url":null,"abstract":"In the present work, PbO·Bi2O3·Ga2O3 glasses were synthesized using standard melt-quench technique. The temperature dependent conductivity data of the glasses have been obtained using impedance spectroscopy in the frequency range from 10Hz to 7MHz and in the temperature range from 473K to 703 K. Complex Impedance plots suggest the non-Debye nature of relaxing ions. The dc conductivity follows Arrhenius behavior and decreased with increase in PbO content because of increase of network forming PbO4 units, increases the network dimensionality and blocking the migration of mobile ions.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85989197","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":"Measurements of third-order optical nonlinearity using Z-scan technique: A review","authors":"Vijender Singh, P. kharangarh, Parveen Kumar, D. Singh, Sanjay, A. Ghosh, Sanjay Kumar","doi":"10.1063/1.5122548","DOIUrl":"https://doi.org/10.1063/1.5122548","url":null,"abstract":"Optical materials exhibiting a large third-order optical nonlinearity are in great demands because of their functional applications in optical limiting, optical switching, optical data storage etc. A well-known single Z-scan technique is employed to determine third-order nonlinear optical properties of nonlinear optical materials. Z-scan is a simple experimental technique to measure intensity dependent nonlinear susceptibilities of third-order nonlinear optical materials. It was originally introduced by Sheik Bahae et.al. In this technique, the sample is translated in the z-direction along the axis of a focused Gaussian beam, and the far field intensity is measured as function of sample position. Consequently, increases and decreases in the maximum intensity incident on the sample produce wavefront distortions created by nonlinear optical effects. This is a simple and sensitive single beam technique to measure the sign and magnitude of both real and imaginary part of the third order nonlinear susceptibility χ(3) of nonlinear optical materials.Optical materials exhibiting a large third-order optical nonlinearity are in great demands because of their functional applications in optical limiting, optical switching, optical data storage etc. A well-known single Z-scan technique is employed to determine third-order nonlinear optical properties of nonlinear optical materials. Z-scan is a simple experimental technique to measure intensity dependent nonlinear susceptibilities of third-order nonlinear optical materials. It was originally introduced by Sheik Bahae et.al. In this technique, the sample is translated in the z-direction along the axis of a focused Gaussian beam, and the far field intensity is measured as function of sample position. Consequently, increases and decreases in the maximum intensity incident on the sample produce wavefront distortions created by nonlinear optical effects. This is a simple and sensitive single beam technique to measure the sign and magnitude of both real and imaginary part of the third order nonlinear susceptibili...","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72651044","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":"Hexaflumuron_β-cyclodextrin inclusion complex as improved pesticide formulation: A NMR case study","authors":"Bhawna Chaubey, Samanwita Pal","doi":"10.1063/1.5122626","DOIUrl":"https://doi.org/10.1063/1.5122626","url":null,"abstract":"In the present study, we have tried to characterize the inclusion complex of Hexaflumuron (HFM) with β-cyclodextrin (β-CD) using 1H & 19F NMR experiments. HFM is a pesticide (anti-termite) belonging to benzoylphenylurea family that contains three classes of fluorine. Its’ very low aqueous solubility can lead to facile accumulation in water or soil causing rapid poisoning of the environment. Therefore, elimination of HFM requires scavenging agents such as β-CD that can encapsulate HFM resulting in better aqueous solubility. A significant change in 19F and 1H NMR chemical shift, 1H & 19F longitudinal (T1) and 19F transverse relaxation (T2) time was observed for HFM in the presence of CD that confirms HFM-CD association. Jobs Plot demonstrated that β-CD was found to form 2:1 inclusion complex with HFM. Association constant was determined from chemical shift titration method using modified Benesi-Hildebrand plot. The present study for the first time provides an insight in understanding formulation of HFM in β-CD enhancingthe solubility giving rise to a possible soil remediation method.In the present study, we have tried to characterize the inclusion complex of Hexaflumuron (HFM) with β-cyclodextrin (β-CD) using 1H & 19F NMR experiments. HFM is a pesticide (anti-termite) belonging to benzoylphenylurea family that contains three classes of fluorine. Its’ very low aqueous solubility can lead to facile accumulation in water or soil causing rapid poisoning of the environment. Therefore, elimination of HFM requires scavenging agents such as β-CD that can encapsulate HFM resulting in better aqueous solubility. A significant change in 19F and 1H NMR chemical shift, 1H & 19F longitudinal (T1) and 19F transverse relaxation (T2) time was observed for HFM in the presence of CD that confirms HFM-CD association. Jobs Plot demonstrated that β-CD was found to form 2:1 inclusion complex with HFM. Association constant was determined from chemical shift titration method using modified Benesi-Hildebrand plot. The present study for the first time provides an insight in understanding formulation of HFM in β...","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"68 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82841712","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":"Assigning effective atomic number and electron density for some lanthanide oxides over wide gamma-rays energies","authors":"Baljeet Kaur, N. Rani, Yogesh K Vermani, T. Singh","doi":"10.1063/1.5122501","DOIUrl":"https://doi.org/10.1063/1.5122501","url":null,"abstract":"In the present work, we study the interaction of gamma-rays with oxides of lanthanides, namely lanthanum oxide (La2O3) and europium oxide (Eu2O3). Variation of mass attenuation coefficient values with gamma-ray photon energy is calculated using WinXcom software package in the energy range 1 keV to 103 MeV. The total mass attenuation coefficient values are further used to assign the effective atomic number Zeff and the electron density Ne for these lanthanide oxides. The results obtained for effective atomic number are also compared with the experimental data.In the present work, we study the interaction of gamma-rays with oxides of lanthanides, namely lanthanum oxide (La2O3) and europium oxide (Eu2O3). Variation of mass attenuation coefficient values with gamma-ray photon energy is calculated using WinXcom software package in the energy range 1 keV to 103 MeV. The total mass attenuation coefficient values are further used to assign the effective atomic number Zeff and the electron density Ne for these lanthanide oxides. The results obtained for effective atomic number are also compared with the experimental data.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"5 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86516293","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":"Transport properties of Er3+Ions doped lithium boro bismuth tellurite glasses","authors":"B. Eraiah, K. Keshavamurthy","doi":"10.1063/1.5122418","DOIUrl":"https://doi.org/10.1063/1.5122418","url":null,"abstract":"Lithium boro bismuth tellurite glasses doped with Er3+ ions were successfully prepared by conventional melt quenching method and investigated their temperature dependent AC conductivity through impedance analyzer. The frequency dependent AC conductivity has been analyzed using Almond-West type of power law. The conductivity increases with increase of both frequency and temperature. The obtained conductivity values lie in the range of 4.092x10−5 to 3.024x10−5 S/cm. The AC conductivity mechanism can be reasonably inference in terms of correlated barrier hopping (CBH) model.Lithium boro bismuth tellurite glasses doped with Er3+ ions were successfully prepared by conventional melt quenching method and investigated their temperature dependent AC conductivity through impedance analyzer. The frequency dependent AC conductivity has been analyzed using Almond-West type of power law. The conductivity increases with increase of both frequency and temperature. The obtained conductivity values lie in the range of 4.092x10−5 to 3.024x10−5 S/cm. The AC conductivity mechanism can be reasonably inference in terms of correlated barrier hopping (CBH) model.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88845502","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":"Investigation of structural, optical and photocatalytic properties of W(0.99)Pd(0.01)O3 nanoparticles","authors":"Vijay Luxmi, Ashavani Kumar","doi":"10.1063/1.5122345","DOIUrl":"https://doi.org/10.1063/1.5122345","url":null,"abstract":"In the present work, the effective degradation of a commonly used textile dyemethylene blue (MB) in the presence of photocatalyst was investigated under visible light irradation. For this, pd-doped WO3 nanoparticles were synthesized via rapid co-precipitation method. The obtained sample was characterized via powder X-Ray diffractometry for crystallinity analysis and phase structure, SEM for morphological analysis,UV-vis spectroscopy for optical studies. The diffraction peaks obtained from XRD pattern are highly intense that shows crystallinity of the sample (average crystallite size of NPs are ∼33 nm). The efficiency of degradation of the MB dye in the presence of W(0.99) Pd(0.01)O3 photocatalyst was (∼97% in 140 min) with rate constant (∼0.021831 min-1). This shows Pd-doped WO3 has high sensitivity to absorb visible light due to its small band gap (Eg∼2.45 eV).In the present work, the effective degradation of a commonly used textile dyemethylene blue (MB) in the presence of photocatalyst was investigated under visible light irradation. For this, pd-doped WO3 nanoparticles were synthesized via rapid co-precipitation method. The obtained sample was characterized via powder X-Ray diffractometry for crystallinity analysis and phase structure, SEM for morphological analysis,UV-vis spectroscopy for optical studies. The diffraction peaks obtained from XRD pattern are highly intense that shows crystallinity of the sample (average crystallite size of NPs are ∼33 nm). The efficiency of degradation of the MB dye in the presence of W(0.99) Pd(0.01)O3 photocatalyst was (∼97% in 140 min) with rate constant (∼0.021831 min-1). This shows Pd-doped WO3 has high sensitivity to absorb visible light due to its small band gap (Eg∼2.45 eV).","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89267228","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":"Theoretical evaluation of the bioactivity of a plant-derived natural molecule-D-Pinitol and other derived structure","authors":"A. Mishra, S. Tewari","doi":"10.1063/1.5122568","DOIUrl":"https://doi.org/10.1063/1.5122568","url":null,"abstract":"D-Pinitol (C6H12O6) is reportedly a bioactive naturally occurring molecule isolated from the leaves of Anthocephalus chinensis plant whose electronic structure parameters, vibrational and electroni...","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87094922","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":"Estimation of physical and nonlinear optical parameters of vanadate glasses","authors":"S. Yadav, S. Kumari, Monika Barala, D. Mohan, R. Dhar, S. Chaudhary","doi":"10.1063/1.5122378","DOIUrl":"https://doi.org/10.1063/1.5122378","url":null,"abstract":"Semiconducting Vanadate (V2O5 based) glass has plentiful application in the field of electrochemical batteries and optical switches. Theoretical investigation for density and molar volume are done for semiconducting glass with composition 60V2O5.(40-x) ZnO.xMoO3 (x=10,13,16,19,22). The density decreases from 4.168-4.057g/cm3 with increasing MoO3 content and an opposite behavior is observed for Molar volume. Using Lorentz- Lorenz equation index of refraction is calculated and found to be very high (4.103 to 3.920) and Oxide ion polarizability varies little in the range 2.6935- 2.6908A3. Using generalized Miller’s rule, third order nonlinear optical susceptibility found to be very high 2.39x10−6 to 1.61x10−6 esu. and Nonlinear Index of Refraction varies from 2.194x10−5 to 1.555x10−5esu.Semiconducting Vanadate (V2O5 based) glass has plentiful application in the field of electrochemical batteries and optical switches. Theoretical investigation for density and molar volume are done for semiconducting glass with composition 60V2O5.(40-x) ZnO.xMoO3 (x=10,13,16,19,22). The density decreases from 4.168-4.057g/cm3 with increasing MoO3 content and an opposite behavior is observed for Molar volume. Using Lorentz- Lorenz equation index of refraction is calculated and found to be very high (4.103 to 3.920) and Oxide ion polarizability varies little in the range 2.6935- 2.6908A3. Using generalized Miller’s rule, third order nonlinear optical susceptibility found to be very high 2.39x10−6 to 1.61x10−6 esu. and Nonlinear Index of Refraction varies from 2.194x10−5 to 1.555x10−5esu.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87802641","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":"Optical band gap and crystallite size investigations of anticancer drug loaded ZnO nanoparticles","authors":"Deepak Kumar, Samanwita Pal","doi":"10.1063/1.5122627","DOIUrl":"https://doi.org/10.1063/1.5122627","url":null,"abstract":"The present study aims at the development and characterization of zinc oxide (ZnO) nanoparticles as a carrier for various anti-cancerous drugs viz. 5-Fluorouracil (5-FU), Doxorubicin (DOX) and Daunorubicin (DNR). ZnO nanoparticles were prepared by standard precipitation method. The measurement of optical band gap using UV-Visible Diffuse Reflectance Spectroscopy (DRS) analysis reveals the lowering of ZnO band gap after the drug loading. Crystallite size of free and drug loaded ZnO nanoparticles were determined using X-ray Diffraction (XRD) analysis. The crystallite size of ZnO nanoparticles increases after the drug loading. Both the techniques confirm the adsorption of drug molecules on ZnO surface.The present study aims at the development and characterization of zinc oxide (ZnO) nanoparticles as a carrier for various anti-cancerous drugs viz. 5-Fluorouracil (5-FU), Doxorubicin (DOX) and Daunorubicin (DNR). ZnO nanoparticles were prepared by standard precipitation method. The measurement of optical band gap using UV-Visible Diffuse Reflectance Spectroscopy (DRS) analysis reveals the lowering of ZnO band gap after the drug loading. Crystallite size of free and drug loaded ZnO nanoparticles were determined using X-ray Diffraction (XRD) analysis. The crystallite size of ZnO nanoparticles increases after the drug loading. Both the techniques confirm the adsorption of drug molecules on ZnO surface.","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89814631","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 annealing on the structural and opto-electrical properties of as-grown ZnO thin films by successive ionic layer adsorption and reaction (SILAR) technique","authors":"Kiran, Poonam, A. Ghosh, Sanjay, Vijender Singh","doi":"10.1063/1.5122337","DOIUrl":"https://doi.org/10.1063/1.5122337","url":null,"abstract":"The Zinc oxide thin films were grown on the amorphous glass substrate using Successive Ionic Layer Adsorption and Reaction (SILAR) technique at room temperature. The various preparative parameters were optimized to obtain good quality films. The as-grown films were annealed at 350° C for 2 h in air. The comparative study of the annealed and the as-grown thin films of ZnO were done for structural, optical and electrical studies. Polycrystalline nature was depicted from the x-ray diffraction (XRD) patterns. The peak intensity of as-grown ZnO thin films enhances after annealing. The average grain size calculated from XRD patterns was 17.66 nm for as-grown, while it increased to 24.66 nm after annealing. The band gap of as-grown ZnO thin films was relatively higher and was found to be 3.80 eV. After air annealing, the band gap decrease to 3.58 eV. The current-voltage characteristics show nearly ohmic behavior with decrease in the film resistance, after annealing in air. N-type conductivity was confirmed from the TEP measurements.The Zinc oxide thin films were grown on the amorphous glass substrate using Successive Ionic Layer Adsorption and Reaction (SILAR) technique at room temperature. The various preparative parameters were optimized to obtain good quality films. The as-grown films were annealed at 350° C for 2 h in air. The comparative study of the annealed and the as-grown thin films of ZnO were done for structural, optical and electrical studies. Polycrystalline nature was depicted from the x-ray diffraction (XRD) patterns. The peak intensity of as-grown ZnO thin films enhances after annealing. The average grain size calculated from XRD patterns was 17.66 nm for as-grown, while it increased to 24.66 nm after annealing. The band gap of as-grown ZnO thin films was relatively higher and was found to be 3.80 eV. After air annealing, the band gap decrease to 3.58 eV. The current-voltage characteristics show nearly ohmic behavior with decrease in the film resistance, after annealing in air. N-type conductivity was confirmed from ...","PeriodicalId":7262,"journal":{"name":"ADVANCES IN BASIC SCIENCE (ICABS 2019)","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85287601","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}