Sandeep B. Somvanshi, R. V. Kumar, J. S. Kounsalye, T. Saraf, K. M. Jadhav
In the present work, investigations of structural, magnetic and induction heating properties of surface functionalized zinc ferrite nanoparticles were carried out successfully. The zinc ferrite nanoparticles were prepared by co-precipitation route and further functionalized with oleic acid. The room temperature X-ray diffraction pattern confirmed the typical cubic spinel structure of the prepared nanoparticles. The average crystallite size calculated from Scherrer’s formula was found to be 12.30 nm confirming the nanocrystalline nature of zinc ferrite nanoparticles. The characteristic peaks observed in FT-IR spectrum confirmed the formation of cubic spinel structure and oleic acid coating over zinc ferrite nanoparticles. The room temperature magnetization behaviour revealed the superparamagnetic nature of the prepared nanoparticles. The induction heating behaviour shows a desirable amount (6 mg/mL) of zinc ferrite nanoparticles can able to achieve 42°C temperature for 600 s at 4.0 kA/m. This indicates that the resulting zinc ferrite nanoparticles are promising materials in magnetic hyperthermia treatments.
{"title":"Investigations of structural, magnetic and induction heating properties of surface functionalized zinc ferrite nanoparticles for hyperthermia applications","authors":"Sandeep B. Somvanshi, R. V. Kumar, J. S. Kounsalye, T. Saraf, K. M. Jadhav","doi":"10.1063/1.5113361","DOIUrl":"https://doi.org/10.1063/1.5113361","url":null,"abstract":"In the present work, investigations of structural, magnetic and induction heating properties of surface functionalized zinc ferrite nanoparticles were carried out successfully. The zinc ferrite nanoparticles were prepared by co-precipitation route and further functionalized with oleic acid. The room temperature X-ray diffraction pattern confirmed the typical cubic spinel structure of the prepared nanoparticles. The average crystallite size calculated from Scherrer’s formula was found to be 12.30 nm confirming the nanocrystalline nature of zinc ferrite nanoparticles. The characteristic peaks observed in FT-IR spectrum confirmed the formation of cubic spinel structure and oleic acid coating over zinc ferrite nanoparticles. The room temperature magnetization behaviour revealed the superparamagnetic nature of the prepared nanoparticles. The induction heating behaviour shows a desirable amount (6 mg/mL) of zinc ferrite nanoparticles can able to achieve 42°C temperature for 600 s at 4.0 kA/m. This indicates that the resulting zinc ferrite nanoparticles are promising materials in magnetic hyperthermia treatments.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90987843","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}
Brushite (CaHPO4.2H2O), or Calcium Hydrogen Phosphate Dihydrate (CHPD), crystal is known as Phosphate stone and commonly found in urolithiasis. Brushite is comparatively hard and difficult to remove by shock waves and ultrasonic lithotripsy. The current study is conducted to find out the inhibiting effect of Potassium Dihydrogen Citrate (KDC) solution, on brushite crystals using single-diffusion gel growth technique, at room temperature. Star and needle type crystals are grown in gel medium. As the molar concentration of KDC solution added in the supernatant solution during crystal growth, the average size of grown brushite crystals decreases and for 0.5 M KDC solution, no growth of brushite crystals is observed. The possible mechanism is proposed with the help of Powder XRD, SEM and EDAX analyses. These in-vitro results can help to evaluate the risk factor of brushite crystals.
{"title":"Growth inhibition study of urinary type brushite crystal using potassium dihydrogen citrate solution","authors":"A. Bhojani, H. Jethva, M. Joshi","doi":"10.1063/1.5113256","DOIUrl":"https://doi.org/10.1063/1.5113256","url":null,"abstract":"Brushite (CaHPO4.2H2O), or Calcium Hydrogen Phosphate Dihydrate (CHPD), crystal is known as Phosphate stone and commonly found in urolithiasis. Brushite is comparatively hard and difficult to remove by shock waves and ultrasonic lithotripsy. The current study is conducted to find out the inhibiting effect of Potassium Dihydrogen Citrate (KDC) solution, on brushite crystals using single-diffusion gel growth technique, at room temperature. Star and needle type crystals are grown in gel medium. As the molar concentration of KDC solution added in the supernatant solution during crystal growth, the average size of grown brushite crystals decreases and for 0.5 M KDC solution, no growth of brushite crystals is observed. The possible mechanism is proposed with the help of Powder XRD, SEM and EDAX analyses. These in-vitro results can help to evaluate the risk factor of brushite crystals.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87542487","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}
NiCo2O4 (NCO) nanostructures were synthesized by a simple hydrothermal method using three different surfactants such as ethylene glycol (EG), oxalic acid (OA) and ammonium fluoride (NHF). Morphology of the different nanostructured materials has been recorded using SEM. The electrochemical performance of the material has been demonstrated using three electrode system. NCO-EG urchin-like nanostructure exhibits the highest specific capacitance of 416 F g−1 at a current density of 0.5 A g−1 and it evolves 73.3 % of capacitance retention at 10 A g−1.NiCo2O4 (NCO) nanostructures were synthesized by a simple hydrothermal method using three different surfactants such as ethylene glycol (EG), oxalic acid (OA) and ammonium fluoride (NHF). Morphology of the different nanostructured materials has been recorded using SEM. The electrochemical performance of the material has been demonstrated using three electrode system. NCO-EG urchin-like nanostructure exhibits the highest specific capacitance of 416 F g−1 at a current density of 0.5 A g−1 and it evolves 73.3 % of capacitance retention at 10 A g−1.
采用乙二醇(EG)、草酸(OA)和氟化铵(NHF)三种不同的表面活性剂，采用简单的水热法制备了NiCo2O4 (NCO)纳米结构。利用扫描电镜记录了不同纳米结构材料的形貌。用三电极系统对材料的电化学性能进行了验证。NCO-EG类海胆纳米结构在0.5 a g−1电流密度下表现出最高的比电容416 F g−1，在10 a g−1电流密度下保持73.3%的电容。采用乙二醇(EG)、草酸(OA)和氟化铵(NHF)三种不同的表面活性剂，采用简单的水热法制备了NiCo2O4 (NCO)纳米结构。利用扫描电镜记录了不同纳米结构材料的形貌。用三电极系统对材料的电化学性能进行了验证。NCO-EG类海胆纳米结构在0.5 a g−1电流密度下表现出最高的比电容416 F g−1，在10 a g−1电流密度下保持73.3%的电容。
{"title":"Pseudocapacitive performance of NiCo2O4 nanostructures","authors":"A. J. C. Mary, A. C. Bose","doi":"10.1063/1.5113391","DOIUrl":"https://doi.org/10.1063/1.5113391","url":null,"abstract":"NiCo2O4 (NCO) nanostructures were synthesized by a simple hydrothermal method using three different surfactants such as ethylene glycol (EG), oxalic acid (OA) and ammonium fluoride (NHF). Morphology of the different nanostructured materials has been recorded using SEM. The electrochemical performance of the material has been demonstrated using three electrode system. NCO-EG urchin-like nanostructure exhibits the highest specific capacitance of 416 F g−1 at a current density of 0.5 A g−1 and it evolves 73.3 % of capacitance retention at 10 A g−1.NiCo2O4 (NCO) nanostructures were synthesized by a simple hydrothermal method using three different surfactants such as ethylene glycol (EG), oxalic acid (OA) and ammonium fluoride (NHF). Morphology of the different nanostructured materials has been recorded using SEM. The electrochemical performance of the material has been demonstrated using three electrode system. NCO-EG urchin-like nanostructure exhibits the highest specific capacitance of 416 F g−1 at a current density of 0.5 A g−1 and it evolves 73.3 % of capacitance retention at 10 A g−1.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84078403","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}
G. Sridevi, S. Bhagade, V. Jayalakshmi, Sandhya Cole
Cadmium sulfide zinc phosphate (CdS-Zn3(PO4)2) nanocomposite is synthesized by effective hydrothermal method. Hydrothermal technique produces highly homogeneous crystalline product and controls particle morphology at low reaction temperatures. The prepared powder samples are characterized by Powder X-ray diffraction (XRD), Diffusion reflectance spectrophotometer (DRS), Scanning electron microscope (SEM). From XRD technique the average crystal size of prepared CdS-Zn3(Po4)2 nanocomposite is in the range of 12 nm. Strain and dislocation density are calculated from XRD studies. Surface morphology of the samples are analyzed by SEM. Bandgap energies are calculated from Kubelka-Munk model by Diffusion electron spectrophotometer.
{"title":"Synthesis and characterization of CdS-Zn3(PO4)2 nanocomposite via hydrothermal method","authors":"G. Sridevi, S. Bhagade, V. Jayalakshmi, Sandhya Cole","doi":"10.1063/1.5112994","DOIUrl":"https://doi.org/10.1063/1.5112994","url":null,"abstract":"Cadmium sulfide zinc phosphate (CdS-Zn3(PO4)2) nanocomposite is synthesized by effective hydrothermal method. Hydrothermal technique produces highly homogeneous crystalline product and controls particle morphology at low reaction temperatures. The prepared powder samples are characterized by Powder X-ray diffraction (XRD), Diffusion reflectance spectrophotometer (DRS), Scanning electron microscope (SEM). From XRD technique the average crystal size of prepared CdS-Zn3(Po4)2 nanocomposite is in the range of 12 nm. Strain and dislocation density are calculated from XRD studies. Surface morphology of the samples are analyzed by SEM. Bandgap energies are calculated from Kubelka-Munk model by Diffusion electron spectrophotometer.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84403615","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}
In this work, high power impulse magnetron sputtering (HiPIMS) was used for the first time to grow Fe4N films. The Fe4N phase can only be formed when N is precisely at 20 at. %. Therefore, it is expected that the Fe4N phase can be obtained by optimization of growth parameters such as N2 gas flow, substrate temperature (Ts) etc. We varied process parameters and found that under optimized conditions single phase Fe4N phase can be obtained at Ts=675 K. Depth profile of Fe4N sample was studied using secondary ion mass spectroscopy and it was found that substantial inter-diffusion takes place between the substrate-film interface when Ts=675 K. This prohibits accurate estimation of saturation magnetization (Ms) by bulk magnetization methods. By using surface sensitive soft x-ray magnetic circular dichroism (MCD) we found that Ms is close to its theoretical value of about 2.5 µB/Fe atom. These are first ever MCD measurements performed on the soft x-ray absorption beamline BL-01 at Indus-2 synchrotron radiation source.In this work, high power impulse magnetron sputtering (HiPIMS) was used for the first time to grow Fe4N films. The Fe4N phase can only be formed when N is precisely at 20 at. %. Therefore, it is expected that the Fe4N phase can be obtained by optimization of growth parameters such as N2 gas flow, substrate temperature (Ts) etc. We varied process parameters and found that under optimized conditions single phase Fe4N phase can be obtained at Ts=675 K. Depth profile of Fe4N sample was studied using secondary ion mass spectroscopy and it was found that substantial inter-diffusion takes place between the substrate-film interface when Ts=675 K. This prohibits accurate estimation of saturation magnetization (Ms) by bulk magnetization methods. By using surface sensitive soft x-ray magnetic circular dichroism (MCD) we found that Ms is close to its theoretical value of about 2.5 µB/Fe atom. These are first ever MCD measurements performed on the soft x-ray absorption beamline BL-01 at Indus-2 synchrotron radiation s...
{"title":"Preparation and characterization of Fe4N thin film deposited by high power impulse magnetron sputtering","authors":"N. Pandey, M. Gupta, D. M. Phase","doi":"10.1063/1.5113132","DOIUrl":"https://doi.org/10.1063/1.5113132","url":null,"abstract":"In this work, high power impulse magnetron sputtering (HiPIMS) was used for the first time to grow Fe4N films. The Fe4N phase can only be formed when N is precisely at 20 at. %. Therefore, it is expected that the Fe4N phase can be obtained by optimization of growth parameters such as N2 gas flow, substrate temperature (Ts) etc. We varied process parameters and found that under optimized conditions single phase Fe4N phase can be obtained at Ts=675 K. Depth profile of Fe4N sample was studied using secondary ion mass spectroscopy and it was found that substantial inter-diffusion takes place between the substrate-film interface when Ts=675 K. This prohibits accurate estimation of saturation magnetization (Ms) by bulk magnetization methods. By using surface sensitive soft x-ray magnetic circular dichroism (MCD) we found that Ms is close to its theoretical value of about 2.5 µB/Fe atom. These are first ever MCD measurements performed on the soft x-ray absorption beamline BL-01 at Indus-2 synchrotron radiation source.In this work, high power impulse magnetron sputtering (HiPIMS) was used for the first time to grow Fe4N films. The Fe4N phase can only be formed when N is precisely at 20 at. %. Therefore, it is expected that the Fe4N phase can be obtained by optimization of growth parameters such as N2 gas flow, substrate temperature (Ts) etc. We varied process parameters and found that under optimized conditions single phase Fe4N phase can be obtained at Ts=675 K. Depth profile of Fe4N sample was studied using secondary ion mass spectroscopy and it was found that substantial inter-diffusion takes place between the substrate-film interface when Ts=675 K. This prohibits accurate estimation of saturation magnetization (Ms) by bulk magnetization methods. By using surface sensitive soft x-ray magnetic circular dichroism (MCD) we found that Ms is close to its theoretical value of about 2.5 µB/Fe atom. These are first ever MCD measurements performed on the soft x-ray absorption beamline BL-01 at Indus-2 synchrotron radiation s...","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82485523","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}
Tb and Mn codoped Bismuth Ferrite (BTFMO) nanoparticles of crystallite size 45 nm and 2.0 wt% BTFMO- PVA nanocomposite film are synthesized by sol gel method. From Williamson-Hall analysis, strain is found to be 0.4%. Morphological Study reveals the uniform dispersion of BTFMO nanofillers in the PVA matrix. Modified Cole-Cole model is well-fitted with the experimentally observed temperature dependent dielectric response of the film sample above room temperature. A non-Debye type asymmetric behavior is observed. Relaxation time tends to decrease with increasing temperature. Current-voltage study of the film under ±50 V applied voltage exhibits temperature dependent rectifying nature indicating the formation of back to back Schottky Barrier Diode (SBD) with barrier height 0.94eV.Tb and Mn codoped Bismuth Ferrite (BTFMO) nanoparticles of crystallite size 45 nm and 2.0 wt% BTFMO- PVA nanocomposite film are synthesized by sol gel method. From Williamson-Hall analysis, strain is found to be 0.4%. Morphological Study reveals the uniform dispersion of BTFMO nanofillers in the PVA matrix. Modified Cole-Cole model is well-fitted with the experimentally observed temperature dependent dielectric response of the film sample above room temperature. A non-Debye type asymmetric behavior is observed. Relaxation time tends to decrease with increasing temperature. Current-voltage study of the film under ±50 V applied voltage exhibits temperature dependent rectifying nature indicating the formation of back to back Schottky Barrier Diode (SBD) with barrier height 0.94eV.
{"title":"Electrical transport properties of Tb and Mn codoped bismuth ferrite embedded poly (vinyl alcohol) nanocomposite film","authors":"Monalisa Halder, A. Meikap","doi":"10.1063/1.5113268","DOIUrl":"https://doi.org/10.1063/1.5113268","url":null,"abstract":"Tb and Mn codoped Bismuth Ferrite (BTFMO) nanoparticles of crystallite size 45 nm and 2.0 wt% BTFMO- PVA nanocomposite film are synthesized by sol gel method. From Williamson-Hall analysis, strain is found to be 0.4%. Morphological Study reveals the uniform dispersion of BTFMO nanofillers in the PVA matrix. Modified Cole-Cole model is well-fitted with the experimentally observed temperature dependent dielectric response of the film sample above room temperature. A non-Debye type asymmetric behavior is observed. Relaxation time tends to decrease with increasing temperature. Current-voltage study of the film under ±50 V applied voltage exhibits temperature dependent rectifying nature indicating the formation of back to back Schottky Barrier Diode (SBD) with barrier height 0.94eV.Tb and Mn codoped Bismuth Ferrite (BTFMO) nanoparticles of crystallite size 45 nm and 2.0 wt% BTFMO- PVA nanocomposite film are synthesized by sol gel method. From Williamson-Hall analysis, strain is found to be 0.4%. Morphological Study reveals the uniform dispersion of BTFMO nanofillers in the PVA matrix. Modified Cole-Cole model is well-fitted with the experimentally observed temperature dependent dielectric response of the film sample above room temperature. A non-Debye type asymmetric behavior is observed. Relaxation time tends to decrease with increasing temperature. Current-voltage study of the film under ±50 V applied voltage exhibits temperature dependent rectifying nature indicating the formation of back to back Schottky Barrier Diode (SBD) with barrier height 0.94eV.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"91 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80499971","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}
R. Ramarajan, M. Kovendhan, R. Babu, K. Thangaraju, D. Joseph
In this work, we present the results of optimization of ‘Nb’ doped tin oxide (Sn1-xNbxO2, NTO) thin films deposited by cost effective spray pyrolysis method onto glass substrates using 0.3 M and 0.5 M precursor solutions. The XRD spectrum of thin films clearly indicate polycrystalline nature with tetragonal structure. The 0.5 M concentration thin film was more textured than the 0.3 M concentration thin film indicating the influence of precursor concentration in textured growth. The surface morphology of the films showed twisted metal sheet like structure and the composition was confirmed by elemental analysis. The 0.5 M NTO thin film had a maximum average transmittance of 72% at 550 nm. The band gap values estimated from the tauc plot around 3.4 eV well matched with previous reports. The lowest sheet resistance of 30 Ω/□ and resistivity value of 9.05×10−4 Ω cm were achieved for the films prepared using 0.5 M precursor solution. The NTO thin film was found to possess two different conduction mechanism at two different temperature range from the Arrhenius plot (300 K to 572 K). The film deposited using 0.5 M solution has higher figure of merit value of 2.48×10−2 Ω−1 and is better than the film deposited using 0.3 M precursor solution.In this work, we present the results of optimization of ‘Nb’ doped tin oxide (Sn1-xNbxO2, NTO) thin films deposited by cost effective spray pyrolysis method onto glass substrates using 0.3 M and 0.5 M precursor solutions. The XRD spectrum of thin films clearly indicate polycrystalline nature with tetragonal structure. The 0.5 M concentration thin film was more textured than the 0.3 M concentration thin film indicating the influence of precursor concentration in textured growth. The surface morphology of the films showed twisted metal sheet like structure and the composition was confirmed by elemental analysis. The 0.5 M NTO thin film had a maximum average transmittance of 72% at 550 nm. The band gap values estimated from the tauc plot around 3.4 eV well matched with previous reports. The lowest sheet resistance of 30 Ω/□ and resistivity value of 9.05×10−4 Ω cm were achieved for the films prepared using 0.5 M precursor solution. The NTO thin film was found to possess two different conduction mechanism at t...
{"title":"Optimization and transport properties of ‘Nb’ doped SnO2 thin film as an alternate TCO application","authors":"R. Ramarajan, M. Kovendhan, R. Babu, K. Thangaraju, D. Joseph","doi":"10.1063/1.5113266","DOIUrl":"https://doi.org/10.1063/1.5113266","url":null,"abstract":"In this work, we present the results of optimization of ‘Nb’ doped tin oxide (Sn1-xNbxO2, NTO) thin films deposited by cost effective spray pyrolysis method onto glass substrates using 0.3 M and 0.5 M precursor solutions. The XRD spectrum of thin films clearly indicate polycrystalline nature with tetragonal structure. The 0.5 M concentration thin film was more textured than the 0.3 M concentration thin film indicating the influence of precursor concentration in textured growth. The surface morphology of the films showed twisted metal sheet like structure and the composition was confirmed by elemental analysis. The 0.5 M NTO thin film had a maximum average transmittance of 72% at 550 nm. The band gap values estimated from the tauc plot around 3.4 eV well matched with previous reports. The lowest sheet resistance of 30 Ω/□ and resistivity value of 9.05×10−4 Ω cm were achieved for the films prepared using 0.5 M precursor solution. The NTO thin film was found to possess two different conduction mechanism at two different temperature range from the Arrhenius plot (300 K to 572 K). The film deposited using 0.5 M solution has higher figure of merit value of 2.48×10−2 Ω−1 and is better than the film deposited using 0.3 M precursor solution.In this work, we present the results of optimization of ‘Nb’ doped tin oxide (Sn1-xNbxO2, NTO) thin films deposited by cost effective spray pyrolysis method onto glass substrates using 0.3 M and 0.5 M precursor solutions. The XRD spectrum of thin films clearly indicate polycrystalline nature with tetragonal structure. The 0.5 M concentration thin film was more textured than the 0.3 M concentration thin film indicating the influence of precursor concentration in textured growth. The surface morphology of the films showed twisted metal sheet like structure and the composition was confirmed by elemental analysis. The 0.5 M NTO thin film had a maximum average transmittance of 72% at 550 nm. The band gap values estimated from the tauc plot around 3.4 eV well matched with previous reports. The lowest sheet resistance of 30 Ω/□ and resistivity value of 9.05×10−4 Ω cm were achieved for the films prepared using 0.5 M precursor solution. The NTO thin film was found to possess two different conduction mechanism at t...","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83708825","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}
Static light scattering (SLS) has been used to study polymer monodisperse particles (Colloids). Dilute polymer particle of diameter 0.38 µm dilute colloidal system has been synthesized to avoid multiple scattering. Colloidal particles can form lattices according to DLVO theory, where they interact by Coulombic repulsion and Vander walls attractive force (DLVO Potential whenever the repulsive potential dominate the particles begins to interact strongly to form bcc, fcc or other lattice structures in the colloids. This is defined by structure factor S (Q) in a colloidal system. On the contrary, when attractive forces dominate in the colloids, the particles begin to form clusters. The present studies, however deals with dilute solution and therefore scattering take place from individual particle. This give rise to single particles scattering revealing morphology of particle. Static light scattering (SLS) can be affectively used as a technique for single particle scattering. The present study uses unpolarized light and polarized light (linear and circular) to study the effect of polarization over the single particle scattering event.Static light scattering (SLS) has been used to study polymer monodisperse particles (Colloids). Dilute polymer particle of diameter 0.38 µm dilute colloidal system has been synthesized to avoid multiple scattering. Colloidal particles can form lattices according to DLVO theory, where they interact by Coulombic repulsion and Vander walls attractive force (DLVO Potential whenever the repulsive potential dominate the particles begins to interact strongly to form bcc, fcc or other lattice structures in the colloids. This is defined by structure factor S (Q) in a colloidal system. On the contrary, when attractive forces dominate in the colloids, the particles begin to form clusters. The present studies, however deals with dilute solution and therefore scattering take place from individual particle. This give rise to single particles scattering revealing morphology of particle. Static light scattering (SLS) can be affectively used as a technique for single particle scattering. The present study uses unpolarized...
{"title":"Static light scattering studies of polymer colloids","authors":"D. Joseph, Krishan Kumar","doi":"10.1063/1.5112893","DOIUrl":"https://doi.org/10.1063/1.5112893","url":null,"abstract":"Static light scattering (SLS) has been used to study polymer monodisperse particles (Colloids). Dilute polymer particle of diameter 0.38 µm dilute colloidal system has been synthesized to avoid multiple scattering. Colloidal particles can form lattices according to DLVO theory, where they interact by Coulombic repulsion and Vander walls attractive force (DLVO Potential whenever the repulsive potential dominate the particles begins to interact strongly to form bcc, fcc or other lattice structures in the colloids. This is defined by structure factor S (Q) in a colloidal system. On the contrary, when attractive forces dominate in the colloids, the particles begin to form clusters. The present studies, however deals with dilute solution and therefore scattering take place from individual particle. This give rise to single particles scattering revealing morphology of particle. Static light scattering (SLS) can be affectively used as a technique for single particle scattering. The present study uses unpolarized light and polarized light (linear and circular) to study the effect of polarization over the single particle scattering event.Static light scattering (SLS) has been used to study polymer monodisperse particles (Colloids). Dilute polymer particle of diameter 0.38 µm dilute colloidal system has been synthesized to avoid multiple scattering. Colloidal particles can form lattices according to DLVO theory, where they interact by Coulombic repulsion and Vander walls attractive force (DLVO Potential whenever the repulsive potential dominate the particles begins to interact strongly to form bcc, fcc or other lattice structures in the colloids. This is defined by structure factor S (Q) in a colloidal system. On the contrary, when attractive forces dominate in the colloids, the particles begin to form clusters. The present studies, however deals with dilute solution and therefore scattering take place from individual particle. This give rise to single particles scattering revealing morphology of particle. Static light scattering (SLS) can be affectively used as a technique for single particle scattering. The present study uses unpolarized...","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77929900","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}
Wide-angle X-ray scattering (WAXS) for the considered raw MCU-5 cotton fiber has been carried out using imaging plate system (Dip-3200) with dimension 440 x 240 mm2. By employing Linked atom least square (LALS) method, we are reporting here the molecular and crystal structure of this cotton fiber. We have computed elastic moduli tensor components of this fiber. From the bond angle, dihedral angles we have computed Young’s modulus as 76 GPA, which is in agreement with the earlier reported values.Wide-angle X-ray scattering (WAXS) for the considered raw MCU-5 cotton fiber has been carried out using imaging plate system (Dip-3200) with dimension 440 x 240 mm2. By employing Linked atom least square (LALS) method, we are reporting here the molecular and crystal structure of this cotton fiber. We have computed elastic moduli tensor components of this fiber. From the bond angle, dihedral angles we have computed Young’s modulus as 76 GPA, which is in agreement with the earlier reported values.
利用尺寸为440 x 240 mm2的成像板系统(Dip-3200)对所考虑的MCU-5棉纤维进行了广角x射线散射(WAXS)。本文采用链接原子最小二乘(LALS)方法，报道了这种棉纤维的分子和晶体结构。我们计算了这种纤维的弹性模量张量分量。从键角、二面角计算得到杨氏模量为76 GPA，与之前报道的值一致。利用尺寸为440 x 240 mm2的成像板系统(Dip-3200)对所考虑的MCU-5棉纤维进行了广角x射线散射(WAXS)。本文采用链接原子最小二乘(LALS)方法，报道了这种棉纤维的分子和晶体结构。我们计算了这种纤维的弹性模量张量分量。从键角、二面角计算得到杨氏模量为76 GPA，与之前报道的值一致。
{"title":"Determination of crystal structure and elastic constants of MCU-5 cotton fiber using WAXS data","authors":"V. Manju, S. Divakara, K. Byrappa, R. Somashekar","doi":"10.1063/1.5112871","DOIUrl":"https://doi.org/10.1063/1.5112871","url":null,"abstract":"Wide-angle X-ray scattering (WAXS) for the considered raw MCU-5 cotton fiber has been carried out using imaging plate system (Dip-3200) with dimension 440 x 240 mm2. By employing Linked atom least square (LALS) method, we are reporting here the molecular and crystal structure of this cotton fiber. We have computed elastic moduli tensor components of this fiber. From the bond angle, dihedral angles we have computed Young’s modulus as 76 GPA, which is in agreement with the earlier reported values.Wide-angle X-ray scattering (WAXS) for the considered raw MCU-5 cotton fiber has been carried out using imaging plate system (Dip-3200) with dimension 440 x 240 mm2. By employing Linked atom least square (LALS) method, we are reporting here the molecular and crystal structure of this cotton fiber. We have computed elastic moduli tensor components of this fiber. From the bond angle, dihedral angles we have computed Young’s modulus as 76 GPA, which is in agreement with the earlier reported values.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80736388","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}
The present paper describes the synthesis and in vitro bioactivity of SiO2-CaO-Na2O bio-glass using bio-waste. Rice husk ash (RHA) and eggshells bio-waste have been used as resources for extracting the silicon dioxide and calcium oxide respectively. Glass samples were obtained by standard melt-quenching technique. The bioactivity was assessed using in vitro studies in simulated body fluid (SBF). The nucleation and growth of hydroxyapatite were confirmed using XRD, FTIR and SEM-EDS characterizations. XRD have confirmed the phase of hydroxyapatite, well matched with its standard JCPDS data. FTIR spectra reveal the apparent silicate stretching, bending vibration modes and phosphate absorption bands. Surface morphology has been observed using SEM images resulting globular shape of hydroxyapatite formed. And, the chemical constituents of apatite such as Ca and P have been confirmed by EDS spectra. These results perfectly established that, RHA and eggshells are potentially beneficial sources for producing bio-glasses.The present paper describes the synthesis and in vitro bioactivity of SiO2-CaO-Na2O bio-glass using bio-waste. Rice husk ash (RHA) and eggshells bio-waste have been used as resources for extracting the silicon dioxide and calcium oxide respectively. Glass samples were obtained by standard melt-quenching technique. The bioactivity was assessed using in vitro studies in simulated body fluid (SBF). The nucleation and growth of hydroxyapatite were confirmed using XRD, FTIR and SEM-EDS characterizations. XRD have confirmed the phase of hydroxyapatite, well matched with its standard JCPDS data. FTIR spectra reveal the apparent silicate stretching, bending vibration modes and phosphate absorption bands. Surface morphology has been observed using SEM images resulting globular shape of hydroxyapatite formed. And, the chemical constituents of apatite such as Ca and P have been confirmed by EDS spectra. These results perfectly established that, RHA and eggshells are potentially beneficial sources for producing bio-g...
本文介绍了利用生物废弃物制备二氧化硅- cao - na2o生物玻璃及其体外生物活性。稻壳灰和蛋壳生物废弃物分别作为提取二氧化硅和氧化钙的资源。玻璃样品采用标准熔融淬火技术制备。通过体外模拟体液(SBF)研究评估其生物活性。采用XRD、FTIR和SEM-EDS表征羟基磷灰石的成核和生长。XRD证实了羟基磷灰石的物相，与JCPDS标准数据吻合良好。FTIR光谱显示了明显的硅酸盐拉伸、弯曲振动模式和磷酸盐吸收带。表面形貌已观察到使用扫描电镜图像产生球形的羟基磷灰石形成。通过能谱分析，确定了磷灰石中的钙、磷等化学成分。这些结果完美地证明了RHA和蛋壳是生产生物玻璃的潜在有益来源。本文介绍了利用生物废弃物制备二氧化硅- cao - na2o生物玻璃及其体外生物活性。稻壳灰和蛋壳生物废弃物分别作为提取二氧化硅和氧化钙的资源。玻璃样品采用标准熔融淬火技术制备。通过体外模拟体液(SBF)研究评估其生物活性。采用XRD、FTIR和SEM-EDS表征羟基磷灰石的成核和生长。XRD证实了羟基磷灰石的物相，与JCPDS标准数据吻合良好。FTIR光谱显示了明显的硅酸盐拉伸、弯曲振动模式和磷酸盐吸收带。表面形貌已观察到使用扫描电镜图像产生球形的羟基磷灰石形成。通过能谱分析，确定了磷灰石中的钙、磷等化学成分。这些结果完美地证明了RHA和蛋壳是潜在的有益的生产生物蛋白的来源。
{"title":"Synthesis and in vitro bioactivity of SiO2-CaO-Na2O glass using bio-waste resources","authors":"P. Srinath, P. A. Azeem, K. V. Reddy, S. R. Kumar","doi":"10.1063/1.5113072","DOIUrl":"https://doi.org/10.1063/1.5113072","url":null,"abstract":"The present paper describes the synthesis and in vitro bioactivity of SiO2-CaO-Na2O bio-glass using bio-waste. Rice husk ash (RHA) and eggshells bio-waste have been used as resources for extracting the silicon dioxide and calcium oxide respectively. Glass samples were obtained by standard melt-quenching technique. The bioactivity was assessed using in vitro studies in simulated body fluid (SBF). The nucleation and growth of hydroxyapatite were confirmed using XRD, FTIR and SEM-EDS characterizations. XRD have confirmed the phase of hydroxyapatite, well matched with its standard JCPDS data. FTIR spectra reveal the apparent silicate stretching, bending vibration modes and phosphate absorption bands. Surface morphology has been observed using SEM images resulting globular shape of hydroxyapatite formed. And, the chemical constituents of apatite such as Ca and P have been confirmed by EDS spectra. These results perfectly established that, RHA and eggshells are potentially beneficial sources for producing bio-glasses.The present paper describes the synthesis and in vitro bioactivity of SiO2-CaO-Na2O bio-glass using bio-waste. Rice husk ash (RHA) and eggshells bio-waste have been used as resources for extracting the silicon dioxide and calcium oxide respectively. Glass samples were obtained by standard melt-quenching technique. The bioactivity was assessed using in vitro studies in simulated body fluid (SBF). The nucleation and growth of hydroxyapatite were confirmed using XRD, FTIR and SEM-EDS characterizations. XRD have confirmed the phase of hydroxyapatite, well matched with its standard JCPDS data. FTIR spectra reveal the apparent silicate stretching, bending vibration modes and phosphate absorption bands. Surface morphology has been observed using SEM images resulting globular shape of hydroxyapatite formed. And, the chemical constituents of apatite such as Ca and P have been confirmed by EDS spectra. These results perfectly established that, RHA and eggshells are potentially beneficial sources for producing bio-g...","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82049897","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}
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