Semi-organic nonlinear optical (NLO) single crystal of L-Histidinium tetrafluroborate (LHTF) was synthesized and grown by the slow evaporation solution technique (SEST) at room temperature by using millipore water as a solvent. The crystal system has been confirmed from the Single crystal X-ray diffraction. The title compound crystallizes in the monoclinic crystal system with non- centrosymmetric space group of P21. The optical quality of the grown crystal was identified by UV-vis-NIR spectral analysis and it is found to be transparent in the entire visible region with the lower cut-off wavelength of 239 nm. The grown crystal has good optical transparency in the range of 240 – 1100 nm and marks the absence of absorption in the visible region. In photoluminescence spectrum, broad emission peaks were observed, which indicate the violet emission. The frontier energy gaps calculated theoretically are useful to understand the charge transfer taking place in the molecule. The encouraging results show that the LHTF crystals have potential application in energy storage devices.Semi-organic nonlinear optical (NLO) single crystal of L-Histidinium tetrafluroborate (LHTF) was synthesized and grown by the slow evaporation solution technique (SEST) at room temperature by using millipore water as a solvent. The crystal system has been confirmed from the Single crystal X-ray diffraction. The title compound crystallizes in the monoclinic crystal system with non- centrosymmetric space group of P21. The optical quality of the grown crystal was identified by UV-vis-NIR spectral analysis and it is found to be transparent in the entire visible region with the lower cut-off wavelength of 239 nm. The grown crystal has good optical transparency in the range of 240 – 1100 nm and marks the absence of absorption in the visible region. In photoluminescence spectrum, broad emission peaks were observed, which indicate the violet emission. The frontier energy gaps calculated theoretically are useful to understand the charge transfer taking place in the molecule. The encouraging results show that the L...
{"title":"Crystal growth, optical and orbital molecular study of a promising semi-organic nonlinear optical material: L-histidinium tetrafluroborate (LHTF)","authors":"M. Madhangi, U. Kalpana, P. Murugakoothan","doi":"10.1063/1.5114605","DOIUrl":"https://doi.org/10.1063/1.5114605","url":null,"abstract":"Semi-organic nonlinear optical (NLO) single crystal of L-Histidinium tetrafluroborate (LHTF) was synthesized and grown by the slow evaporation solution technique (SEST) at room temperature by using millipore water as a solvent. The crystal system has been confirmed from the Single crystal X-ray diffraction. The title compound crystallizes in the monoclinic crystal system with non- centrosymmetric space group of P21. The optical quality of the grown crystal was identified by UV-vis-NIR spectral analysis and it is found to be transparent in the entire visible region with the lower cut-off wavelength of 239 nm. The grown crystal has good optical transparency in the range of 240 – 1100 nm and marks the absence of absorption in the visible region. In photoluminescence spectrum, broad emission peaks were observed, which indicate the violet emission. The frontier energy gaps calculated theoretically are useful to understand the charge transfer taking place in the molecule. The encouraging results show that the LHTF crystals have potential application in energy storage devices.Semi-organic nonlinear optical (NLO) single crystal of L-Histidinium tetrafluroborate (LHTF) was synthesized and grown by the slow evaporation solution technique (SEST) at room temperature by using millipore water as a solvent. The crystal system has been confirmed from the Single crystal X-ray diffraction. The title compound crystallizes in the monoclinic crystal system with non- centrosymmetric space group of P21. The optical quality of the grown crystal was identified by UV-vis-NIR spectral analysis and it is found to be transparent in the entire visible region with the lower cut-off wavelength of 239 nm. The grown crystal has good optical transparency in the range of 240 – 1100 nm and marks the absence of absorption in the visible region. In photoluminescence spectrum, broad emission peaks were observed, which indicate the violet emission. The frontier energy gaps calculated theoretically are useful to understand the charge transfer taking place in the molecule. The encouraging results show that the L...","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123380621","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: 7th National Conference on Hierarchically Structured Materials (NCHSM 2019)","authors":"LakshmananSudha","doi":"10.1063/1.5114580","DOIUrl":"https://doi.org/10.1063/1.5114580","url":null,"abstract":"","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117274739","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}
An organic single crystal, guanidinium 4-aminobenzene sulfonate (GuAS) was grown using slow evaporation solution growth technique. The cell parameters of the titular crystal were determined using single crystal X-ray diffraction study. The solid state parameters such as Penn gap energy, Fermi energy, plasma energy etc., were calculated. The optical property of the grown crystal was studied using UV-vis-NIR spectroscopy. The other optical constants such as reflectance, optical and electrical conductivities of the grown crystal were determined. The mechanical behavior of the grown crystal was ascertained using fracture toughness and brittle index.An organic single crystal, guanidinium 4-aminobenzene sulfonate (GuAS) was grown using slow evaporation solution growth technique. The cell parameters of the titular crystal were determined using single crystal X-ray diffraction study. The solid state parameters such as Penn gap energy, Fermi energy, plasma energy etc., were calculated. The optical property of the grown crystal was studied using UV-vis-NIR spectroscopy. The other optical constants such as reflectance, optical and electrical conductivities of the grown crystal were determined. The mechanical behavior of the grown crystal was ascertained using fracture toughness and brittle index.
{"title":"Investigation on optical and mechanical properties of an organic single crystal: Guanidinium 4-aminobenzene sulfonate","authors":"S. Nandhini, R. Ramya, P. Murugakoothan","doi":"10.1063/1.5114604","DOIUrl":"https://doi.org/10.1063/1.5114604","url":null,"abstract":"An organic single crystal, guanidinium 4-aminobenzene sulfonate (GuAS) was grown using slow evaporation solution growth technique. The cell parameters of the titular crystal were determined using single crystal X-ray diffraction study. The solid state parameters such as Penn gap energy, Fermi energy, plasma energy etc., were calculated. The optical property of the grown crystal was studied using UV-vis-NIR spectroscopy. The other optical constants such as reflectance, optical and electrical conductivities of the grown crystal were determined. The mechanical behavior of the grown crystal was ascertained using fracture toughness and brittle index.An organic single crystal, guanidinium 4-aminobenzene sulfonate (GuAS) was grown using slow evaporation solution growth technique. The cell parameters of the titular crystal were determined using single crystal X-ray diffraction study. The solid state parameters such as Penn gap energy, Fermi energy, plasma energy etc., were calculated. The optical property of the grown crystal was studied using UV-vis-NIR spectroscopy. The other optical constants such as reflectance, optical and electrical conductivities of the grown crystal were determined. The mechanical behavior of the grown crystal was ascertained using fracture toughness and brittle index.","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125563939","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}
Cobalt Selenide is an important transition metal chalcogenide. It has been characterized by x-ray powder diffraction and low temperature magnetic studies in the temperature range 300K to 20K. The XRD study confirms the orthorhombic structure of the compound with lattice parameters a = 6.557±0.02A, b = 3.588±0.02 A and c = 5.200±0.02 A. The study of magnetic susceptibility gives the hints for cooperative interaction between the cobalt spins in the sample. The M-H curve confirms the ferromagnetic nature of the compound in the temperature range 20K to 300K. The saturation magnetization and retentivity are found to be almost constant. The application of magnetic field alongwith low temperature cause ordered spin orientation.Cobalt Selenide is an important transition metal chalcogenide. It has been characterized by x-ray powder diffraction and low temperature magnetic studies in the temperature range 300K to 20K. The XRD study confirms the orthorhombic structure of the compound with lattice parameters a = 6.557±0.02A, b = 3.588±0.02 A and c = 5.200±0.02 A. The study of magnetic susceptibility gives the hints for cooperative interaction between the cobalt spins in the sample. The M-H curve confirms the ferromagnetic nature of the compound in the temperature range 20K to 300K. The saturation magnetization and retentivity are found to be almost constant. The application of magnetic field alongwith low temperature cause ordered spin orientation.
硒化钴是一种重要的过渡金属硫族化合物。在300K ~ 20K的温度范围内，用x射线粉末衍射和低温磁性研究对其进行了表征。XRD研究证实了化合物的正交结构，晶格参数为a = 6.557±0.02 a, b = 3.588±0.02 a, c = 5.200±0.02 a。磁化率的研究为样品中钴自旋之间的协同相互作用提供了线索。M-H曲线证实了化合物在20K ~ 300K温度范围内的铁磁性。饱和磁化强度和保持率几乎是恒定的。磁场和低温的作用使自旋取向有序。硒化钴是一种重要的过渡金属硫族化合物。在300K ~ 20K的温度范围内，用x射线粉末衍射和低温磁性研究对其进行了表征。XRD研究证实了化合物的正交结构，晶格参数为a = 6.557±0.02 a, b = 3.588±0.02 a, c = 5.200±0.02 a。磁化率的研究为样品中钴自旋之间的协同相互作用提供了线索。M-H曲线证实了化合物在20K ~ 300K温度范围内的铁磁性。饱和磁化强度和保持率几乎是恒定的。磁场和低温的作用使自旋取向有序。
{"title":"Structural, x-ray spectroscopic and low temperature magnetic studies on cobalt selenide","authors":"S. Ariponnammal, R. Velvizhi","doi":"10.1063/1.5114586","DOIUrl":"https://doi.org/10.1063/1.5114586","url":null,"abstract":"Cobalt Selenide is an important transition metal chalcogenide. It has been characterized by x-ray powder diffraction and low temperature magnetic studies in the temperature range 300K to 20K. The XRD study confirms the orthorhombic structure of the compound with lattice parameters a = 6.557±0.02A, b = 3.588±0.02 A and c = 5.200±0.02 A. The study of magnetic susceptibility gives the hints for cooperative interaction between the cobalt spins in the sample. The M-H curve confirms the ferromagnetic nature of the compound in the temperature range 20K to 300K. The saturation magnetization and retentivity are found to be almost constant. The application of magnetic field alongwith low temperature cause ordered spin orientation.Cobalt Selenide is an important transition metal chalcogenide. It has been characterized by x-ray powder diffraction and low temperature magnetic studies in the temperature range 300K to 20K. The XRD study confirms the orthorhombic structure of the compound with lattice parameters a = 6.557±0.02A, b = 3.588±0.02 A and c = 5.200±0.02 A. The study of magnetic susceptibility gives the hints for cooperative interaction between the cobalt spins in the sample. The M-H curve confirms the ferromagnetic nature of the compound in the temperature range 20K to 300K. The saturation magnetization and retentivity are found to be almost constant. The application of magnetic field alongwith low temperature cause ordered spin orientation.","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131749713","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}
An azobenzene based 5-bromo 4-methoxy salicylideneaniline ligand (L) has been synthesized with ZnCl2 and FeCl3 to form a Zn(5-bromo 4-methoxy salicylidene aniline – ZnL) and Fe(5-bromo 4-methoxy salicylidene aniline - FeL) [ML]. Functional group of L and ML were identified from Fourier transform infrared (FT-IR) spectrum. From this spectrum we observed the intra molecular hydrogen bonding from NH and OH of our compound. Nuclear magnetic resonance (NMR) spectrum shows the placement of the hydrogen atom of our compound. In this NMR spectrum also we observed the intra molecular hydrogen bonding of ML compound. The optical studies were studied by UV-Vis absorption spectrum. The synthesized compound were purified by repeated recrystallization and crystallized using different solvents (like methanol, ethanol, acetone, ethyl acetate and chloroform) to grow as a good quality single crystal. Ethyl acetate was found as a suitable solvent to grow three dimensional good quality single crystals. The metal substituted Schiff base complexes present a wide range of remarkable properties including structural, magnetic, and second-order nonlinear optical properties. Iron (III) complexes supported by tetradentate unsymmetrically-substituted ML ligands have also attracted wide attention for the potential application as iron-containing enzymes.An azobenzene based 5-bromo 4-methoxy salicylideneaniline ligand (L) has been synthesized with ZnCl2 and FeCl3 to form a Zn(5-bromo 4-methoxy salicylidene aniline – ZnL) and Fe(5-bromo 4-methoxy salicylidene aniline - FeL) [ML]. Functional group of L and ML were identified from Fourier transform infrared (FT-IR) spectrum. From this spectrum we observed the intra molecular hydrogen bonding from NH and OH of our compound. Nuclear magnetic resonance (NMR) spectrum shows the placement of the hydrogen atom of our compound. In this NMR spectrum also we observed the intra molecular hydrogen bonding of ML compound. The optical studies were studied by UV-Vis absorption spectrum. The synthesized compound were purified by repeated recrystallization and crystallized using different solvents (like methanol, ethanol, acetone, ethyl acetate and chloroform) to grow as a good quality single crystal. Ethyl acetate was found as a suitable solvent to grow three dimensional good quality single crystals. The metal substituted ...
{"title":"Novel substituted azomethine – Metal complexes: Spectral, structural and optical properties","authors":"S. Leela, M. Banu, J. D. Dhiviya, U. Poomalai","doi":"10.1063/1.5114582","DOIUrl":"https://doi.org/10.1063/1.5114582","url":null,"abstract":"An azobenzene based 5-bromo 4-methoxy salicylideneaniline ligand (L) has been synthesized with ZnCl2 and FeCl3 to form a Zn(5-bromo 4-methoxy salicylidene aniline – ZnL) and Fe(5-bromo 4-methoxy salicylidene aniline - FeL) [ML]. Functional group of L and ML were identified from Fourier transform infrared (FT-IR) spectrum. From this spectrum we observed the intra molecular hydrogen bonding from NH and OH of our compound. Nuclear magnetic resonance (NMR) spectrum shows the placement of the hydrogen atom of our compound. In this NMR spectrum also we observed the intra molecular hydrogen bonding of ML compound. The optical studies were studied by UV-Vis absorption spectrum. The synthesized compound were purified by repeated recrystallization and crystallized using different solvents (like methanol, ethanol, acetone, ethyl acetate and chloroform) to grow as a good quality single crystal. Ethyl acetate was found as a suitable solvent to grow three dimensional good quality single crystals. The metal substituted Schiff base complexes present a wide range of remarkable properties including structural, magnetic, and second-order nonlinear optical properties. Iron (III) complexes supported by tetradentate unsymmetrically-substituted ML ligands have also attracted wide attention for the potential application as iron-containing enzymes.An azobenzene based 5-bromo 4-methoxy salicylideneaniline ligand (L) has been synthesized with ZnCl2 and FeCl3 to form a Zn(5-bromo 4-methoxy salicylidene aniline – ZnL) and Fe(5-bromo 4-methoxy salicylidene aniline - FeL) [ML]. Functional group of L and ML were identified from Fourier transform infrared (FT-IR) spectrum. From this spectrum we observed the intra molecular hydrogen bonding from NH and OH of our compound. Nuclear magnetic resonance (NMR) spectrum shows the placement of the hydrogen atom of our compound. In this NMR spectrum also we observed the intra molecular hydrogen bonding of ML compound. The optical studies were studied by UV-Vis absorption spectrum. The synthesized compound were purified by repeated recrystallization and crystallized using different solvents (like methanol, ethanol, acetone, ethyl acetate and chloroform) to grow as a good quality single crystal. Ethyl acetate was found as a suitable solvent to grow three dimensional good quality single crystals. The metal substituted ...","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117133421","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}
Single crystals of Thiourea added L-histidine (TLH) has been grown by slow evaporation solution growth technique. The unit cell parameter of the as grown crystal was determined by single crystal X-ray diffraction technique. The grown crystal was subjected to mechanical studies. Vicker’s Microhardness studies indicate that the grown crystal is soft in nature. Dielectric loss and dielectric constant measurements were carried out at different temperatures and frequencies. The photoconductivity studies confirm that the title compound has positive photoconducting nature.
{"title":"Growth, mechanical, dielectric and photoconducting properties of thiourea added L-histidine crystals (TLH)","authors":"S. Jayanthi, N. Bhuvaneswari","doi":"10.1063/1.5114600","DOIUrl":"https://doi.org/10.1063/1.5114600","url":null,"abstract":"Single crystals of Thiourea added L-histidine (TLH) has been grown by slow evaporation solution growth technique. The unit cell parameter of the as grown crystal was determined by single crystal X-ray diffraction technique. The grown crystal was subjected to mechanical studies. Vicker’s Microhardness studies indicate that the grown crystal is soft in nature. Dielectric loss and dielectric constant measurements were carried out at different temperatures and frequencies. The photoconductivity studies confirm that the title compound has positive photoconducting nature.","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"153 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123194523","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}
S. Padmini, M. Shafeulwara, K. Sharmini, V. Mridula, Ishan Kar, Kritika Raj
The assiduous irregularity of heart beat rate might be a omen of some stern health related issues such like Tachycardia, coronary and Artery infirmity. Therefore it is acutely crucial to keep groove of one’s health by auditing the rate of heart beat. As some customary approach like Electro-cardiogram (ECG) are already in use, but the usage is too convoluted and cumbersome. This demand for unique facile and modest heart rate scaling apparatus. This paper delineates the layout and operation of the equipment stationed on the fundamentals of Pulse Oximeter. This apparatus is prudent, user-friendly and low arduous device. The pursuance of the device was appraised and the outputs are correlated with the record of regular heart rate auditor by which the breach detected is minimum. The heart rate monitoring system uses a LM324 IC for the filtration and amplification of the signal which is to be processed further to get the output. The optical sensor consists of an IR Transmitter and a Photo Detector which is placed over the finger to measure the counting of the pulse. This low cost device is interfaced with Arduino which programs the device to display the heart rate. After the above system is allied to computer, there is a gratification to the user, they would be able to examine the condition of pulse rates. Besides the above mentioned features, the waveforms attained can be used for advertence in future. This would help the user to figure out and shot their heart pulse rate at home.The assiduous irregularity of heart beat rate might be a omen of some stern health related issues such like Tachycardia, coronary and Artery infirmity. Therefore it is acutely crucial to keep groove of one’s health by auditing the rate of heart beat. As some customary approach like Electro-cardiogram (ECG) are already in use, but the usage is too convoluted and cumbersome. This demand for unique facile and modest heart rate scaling apparatus. This paper delineates the layout and operation of the equipment stationed on the fundamentals of Pulse Oximeter. This apparatus is prudent, user-friendly and low arduous device. The pursuance of the device was appraised and the outputs are correlated with the record of regular heart rate auditor by which the breach detected is minimum. The heart rate monitoring system uses a LM324 IC for the filtration and amplification of the signal which is to be processed further to get the output. The optical sensor consists of an IR Transmitter and a Photo Detector which is plac...
{"title":"Development of pulse oximeter for heart rate monitoring","authors":"S. Padmini, M. Shafeulwara, K. Sharmini, V. Mridula, Ishan Kar, Kritika Raj","doi":"10.1063/1.5114589","DOIUrl":"https://doi.org/10.1063/1.5114589","url":null,"abstract":"The assiduous irregularity of heart beat rate might be a omen of some stern health related issues such like Tachycardia, coronary and Artery infirmity. Therefore it is acutely crucial to keep groove of one’s health by auditing the rate of heart beat. As some customary approach like Electro-cardiogram (ECG) are already in use, but the usage is too convoluted and cumbersome. This demand for unique facile and modest heart rate scaling apparatus. This paper delineates the layout and operation of the equipment stationed on the fundamentals of Pulse Oximeter. This apparatus is prudent, user-friendly and low arduous device. The pursuance of the device was appraised and the outputs are correlated with the record of regular heart rate auditor by which the breach detected is minimum. The heart rate monitoring system uses a LM324 IC for the filtration and amplification of the signal which is to be processed further to get the output. The optical sensor consists of an IR Transmitter and a Photo Detector which is placed over the finger to measure the counting of the pulse. This low cost device is interfaced with Arduino which programs the device to display the heart rate. After the above system is allied to computer, there is a gratification to the user, they would be able to examine the condition of pulse rates. Besides the above mentioned features, the waveforms attained can be used for advertence in future. This would help the user to figure out and shot their heart pulse rate at home.The assiduous irregularity of heart beat rate might be a omen of some stern health related issues such like Tachycardia, coronary and Artery infirmity. Therefore it is acutely crucial to keep groove of one’s health by auditing the rate of heart beat. As some customary approach like Electro-cardiogram (ECG) are already in use, but the usage is too convoluted and cumbersome. This demand for unique facile and modest heart rate scaling apparatus. This paper delineates the layout and operation of the equipment stationed on the fundamentals of Pulse Oximeter. This apparatus is prudent, user-friendly and low arduous device. The pursuance of the device was appraised and the outputs are correlated with the record of regular heart rate auditor by which the breach detected is minimum. The heart rate monitoring system uses a LM324 IC for the filtration and amplification of the signal which is to be processed further to get the output. The optical sensor consists of an IR Transmitter and a Photo Detector which is plac...","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116347245","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 structural and optical properties of pure and Gd doped ZnO thin films have been investigated by XRD and UV-Vis spectrophotometer. Gadolinium doped Zinc oxide thin films with different percentage of Gd have been prepared by the spray pyrolysis method. The prepared samples were characterized by X–ray diffraction (XRD). The optical properties were studied by UV- Visible spectroscopy technique. The influence of Gd dopant on structural and optical properties of the prepared thin films were investigated and discussed based on the structure modification and band gap of undoped and Gd doped ZnO thin films.The structural and optical properties of pure and Gd doped ZnO thin films have been investigated by XRD and UV-Vis spectrophotometer. Gadolinium doped Zinc oxide thin films with different percentage of Gd have been prepared by the spray pyrolysis method. The prepared samples were characterized by X–ray diffraction (XRD). The optical properties were studied by UV- Visible spectroscopy technique. The influence of Gd dopant on structural and optical properties of the prepared thin films were investigated and discussed based on the structure modification and band gap of undoped and Gd doped ZnO thin films.
{"title":"Structural and optical properties of Gd doped ZnO thin films by spray pyrolysis technique","authors":"T. D. Rani, K. Ramamurthi, S. Leela","doi":"10.1063/1.5114583","DOIUrl":"https://doi.org/10.1063/1.5114583","url":null,"abstract":"The structural and optical properties of pure and Gd doped ZnO thin films have been investigated by XRD and UV-Vis spectrophotometer. Gadolinium doped Zinc oxide thin films with different percentage of Gd have been prepared by the spray pyrolysis method. The prepared samples were characterized by X–ray diffraction (XRD). The optical properties were studied by UV- Visible spectroscopy technique. The influence of Gd dopant on structural and optical properties of the prepared thin films were investigated and discussed based on the structure modification and band gap of undoped and Gd doped ZnO thin films.The structural and optical properties of pure and Gd doped ZnO thin films have been investigated by XRD and UV-Vis spectrophotometer. Gadolinium doped Zinc oxide thin films with different percentage of Gd have been prepared by the spray pyrolysis method. The prepared samples were characterized by X–ray diffraction (XRD). The optical properties were studied by UV- Visible spectroscopy technique. The influence of Gd dopant on structural and optical properties of the prepared thin films were investigated and discussed based on the structure modification and band gap of undoped and Gd doped ZnO thin films.","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134262388","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}
Density Functional Theory (DFT) have been executed to study the vibrational frequencies of 2E-1-(3-Bromothiophene-2-yl)-3-(4-Chlorophenyl) prop-2-en-1-one (BTCP). The FT-IR and FT-Raman spectra has been experimentally observed within the region 4000-400 cm-1 and 3500-100 cm-1 were related to the theoretical wave numbers investigated at B3LYP/6-31+G (d, p) basis set. Highest Occupied Molecular Orbital (HOMO) and Lowest Unoccupied Molecular Orbital (LUMO) refers to the inter and intra molecular interactions. The nucleophilic and electrophilic reactive sites of the molecule are determined with Molecular Electrostatic Potential (MEP) surface map that is been sketched over the optimized geometry of the molecule.Density Functional Theory (DFT) have been executed to study the vibrational frequencies of 2E-1-(3-Bromothiophene-2-yl)-3-(4-Chlorophenyl) prop-2-en-1-one (BTCP). The FT-IR and FT-Raman spectra has been experimentally observed within the region 4000-400 cm-1 and 3500-100 cm-1 were related to the theoretical wave numbers investigated at B3LYP/6-31+G (d, p) basis set. Highest Occupied Molecular Orbital (HOMO) and Lowest Unoccupied Molecular Orbital (LUMO) refers to the inter and intra molecular interactions. The nucleophilic and electrophilic reactive sites of the molecule are determined with Molecular Electrostatic Potential (MEP) surface map that is been sketched over the optimized geometry of the molecule.
{"title":"Spectroscopic studies and structural activity investigations of 2E-1-(3-bromothiophene-2-yl)-3-(4-chlorophenyl) prop-2-en-1-one","authors":"K. Anitha, A. Nataraj, B. Narayana","doi":"10.1063/1.5114596","DOIUrl":"https://doi.org/10.1063/1.5114596","url":null,"abstract":"Density Functional Theory (DFT) have been executed to study the vibrational frequencies of 2E-1-(3-Bromothiophene-2-yl)-3-(4-Chlorophenyl) prop-2-en-1-one (BTCP). The FT-IR and FT-Raman spectra has been experimentally observed within the region 4000-400 cm-1 and 3500-100 cm-1 were related to the theoretical wave numbers investigated at B3LYP/6-31+G (d, p) basis set. Highest Occupied Molecular Orbital (HOMO) and Lowest Unoccupied Molecular Orbital (LUMO) refers to the inter and intra molecular interactions. The nucleophilic and electrophilic reactive sites of the molecule are determined with Molecular Electrostatic Potential (MEP) surface map that is been sketched over the optimized geometry of the molecule.Density Functional Theory (DFT) have been executed to study the vibrational frequencies of 2E-1-(3-Bromothiophene-2-yl)-3-(4-Chlorophenyl) prop-2-en-1-one (BTCP). The FT-IR and FT-Raman spectra has been experimentally observed within the region 4000-400 cm-1 and 3500-100 cm-1 were related to the theoretical wave numbers investigated at B3LYP/6-31+G (d, p) basis set. Highest Occupied Molecular Orbital (HOMO) and Lowest Unoccupied Molecular Orbital (LUMO) refers to the inter and intra molecular interactions. The nucleophilic and electrophilic reactive sites of the molecule are determined with Molecular Electrostatic Potential (MEP) surface map that is been sketched over the optimized geometry of the molecule.","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114120573","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}
J. Punitha, M. Dhilip, V. Anbarasu, A. Nataraj, K. S. Kumar
In the present study, the structure and magnetic properties of Sr2TiFeO6 have been investigated. This compound is synthesized using standard solid state route and its physical properties are analysed by X-ray diffraction, Raman spectroscopy and room temperature magnetic measurements. Rietveld refinement of X-ray powder diffraction pattern reveals co-existence between cubic and tetragonal phases with Pm3m space group. The scanning electron micrograph exhibits heterogeneous grain distribution with average grain size of 1 µm to 5 µm. Raman spectra of Sr2TiFeO6 reveals six characteristic bands that are in accordance with the group theoretical predictions. Furthermore, the magnetic measurement at room temperature exhibits weak ferromagnetic ordering.In the present study, the structure and magnetic properties of Sr2TiFeO6 have been investigated. This compound is synthesized using standard solid state route and its physical properties are analysed by X-ray diffraction, Raman spectroscopy and room temperature magnetic measurements. Rietveld refinement of X-ray powder diffraction pattern reveals co-existence between cubic and tetragonal phases with Pm3m space group. The scanning electron micrograph exhibits heterogeneous grain distribution with average grain size of 1 µm to 5 µm. Raman spectra of Sr2TiFeO6 reveals six characteristic bands that are in accordance with the group theoretical predictions. Furthermore, the magnetic measurement at room temperature exhibits weak ferromagnetic ordering.
{"title":"Coexistence of two phases in Sr2TiFeO6 double perovskite","authors":"J. Punitha, M. Dhilip, V. Anbarasu, A. Nataraj, K. S. Kumar","doi":"10.1063/1.5114590","DOIUrl":"https://doi.org/10.1063/1.5114590","url":null,"abstract":"In the present study, the structure and magnetic properties of Sr2TiFeO6 have been investigated. This compound is synthesized using standard solid state route and its physical properties are analysed by X-ray diffraction, Raman spectroscopy and room temperature magnetic measurements. Rietveld refinement of X-ray powder diffraction pattern reveals co-existence between cubic and tetragonal phases with Pm3m space group. The scanning electron micrograph exhibits heterogeneous grain distribution with average grain size of 1 µm to 5 µm. Raman spectra of Sr2TiFeO6 reveals six characteristic bands that are in accordance with the group theoretical predictions. Furthermore, the magnetic measurement at room temperature exhibits weak ferromagnetic ordering.In the present study, the structure and magnetic properties of Sr2TiFeO6 have been investigated. This compound is synthesized using standard solid state route and its physical properties are analysed by X-ray diffraction, Raman spectroscopy and room temperature magnetic measurements. Rietveld refinement of X-ray powder diffraction pattern reveals co-existence between cubic and tetragonal phases with Pm3m space group. The scanning electron micrograph exhibits heterogeneous grain distribution with average grain size of 1 µm to 5 µm. Raman spectra of Sr2TiFeO6 reveals six characteristic bands that are in accordance with the group theoretical predictions. Furthermore, the magnetic measurement at room temperature exhibits weak ferromagnetic ordering.","PeriodicalId":180693,"journal":{"name":"7TH NATIONAL CONFERENCE ON HIERARCHICALLY STRUCTURED MATERIALS (NCHSM-2019)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125252919","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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