In the modern fast changing world, as the green and environment friendly methods are much required and preferred over conventional toxic methods, plant based nano synthesis plays a vital role in future developments of nanotechnology. In this research article, we discussed on the synthesis and characterization of Zinc Oxide nanoparticles by green synthesis method utilizing the leaves of Ocimum Tenuiflorum as reducing agent for Zn salt. ZnO NPs prepared by such a technique exhibit superior antibacterial efficacy against a range of bacteria compared to ZnO NPs produced through chemical methods, without developing resistance to antibiotics. Further the prepared ZnO NPs were characterized by UV-Vis spectroscopy technique and the bandgap of particles was calculated by Tauc Plot method.
{"title":"Plant Based Synthesis of ZnO Nanoparticles and Characterization by UV-Vis Spectroscopy","authors":"S. Bissa, P. Naruka, Raj Birthlya, Arihant Jain","doi":"10.61343/jcm.v1i01.9","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.9","url":null,"abstract":"In the modern fast changing world, as the green and environment friendly methods are much required and preferred over conventional toxic methods, plant based nano synthesis plays a vital role in future developments of nanotechnology. In this research article, we discussed on the synthesis and characterization of Zinc Oxide nanoparticles by green synthesis method utilizing the leaves of Ocimum Tenuiflorum as reducing agent for Zn salt. ZnO NPs prepared by such a technique exhibit superior antibacterial efficacy against a range of bacteria compared to ZnO NPs produced through chemical methods, without developing resistance to antibiotics. Further the prepared ZnO NPs were characterized by UV-Vis spectroscopy technique and the bandgap of particles was calculated by Tauc Plot method.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73533452","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}
We have analyzed the impact of a linear magnetic field on the photonic band gaps exhibited by bulk cold plasma, under external square-wave-like periodic magnetic field of fixed magnitude, conceived as an extrinsic photonic crystal. Here photonic band gaps are determined using transfer matrix method (TMM). Here, the impact of an additional linear magnetic field is determined on the band gaps of plasma photonic crystal with constant magnitude of square like periodic magnetic field, for normal incidence. We determine how the additional and magnetic magnetic field affects the photonic band structure (PBS) and reflectance for such extrinsic photonic crystal. It is noted that, as we increase the additional applied magnetic field, the central frequency of band gaps is shifted toward higher frequency regions in GHz. The band edge increases linearly with the applied magnetic field. The shifting in lower band edge less as compared to upper edge. Sensor is a device which detect the stimuli and give output, and many physical parameters can be measured by sensors. The shifting of band edges can be utilized in design of magnetic field sensor. Here shifting in band gaps by variation in the additional applied magnetic field are determined. The larger value of sensitivity gives a good result for sensing-based application. This analysis is based on the band gaps of extrinsic photonic crystal, and can be employed in design of magnetic field sensor with good sensitivity. Moreover, it can find applications in tunable optical devices.
{"title":"Design of Linear Magnetic Field Sensor Based on Periodically Magnetized Cold Plasma","authors":"Nisha, Narendra Kumar, Bhuvneshwer Suthar","doi":"10.61343/jcm.v1i01.4","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.4","url":null,"abstract":"We have analyzed the impact of a linear magnetic field on the photonic band gaps exhibited by bulk cold plasma, under external square-wave-like periodic magnetic field of fixed magnitude, conceived as an extrinsic photonic crystal. Here photonic band gaps are determined using transfer matrix method (TMM). Here, the impact of an additional linear magnetic field is determined on the band gaps of plasma photonic crystal with constant magnitude of square like periodic magnetic field, for normal incidence. We determine how the additional and magnetic magnetic field affects the photonic band structure (PBS) and reflectance for such extrinsic photonic crystal. It is noted that, as we increase the additional applied magnetic field, the central frequency of band gaps is shifted toward higher frequency regions in GHz. The band edge increases linearly with the applied magnetic field. The shifting in lower band edge less as compared to upper edge. Sensor is a device which detect the stimuli and give output, and many physical parameters can be measured by sensors. The shifting of band edges can be utilized in design of magnetic field sensor. Here shifting in band gaps by variation in the additional applied magnetic field are determined. The larger value of sensitivity gives a good result for sensing-based application. This analysis is based on the band gaps of extrinsic photonic crystal, and can be employed in design of magnetic field sensor with good sensitivity. Moreover, it can find applications in tunable optical devices.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84968458","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}
Anil Kumar, Anirban Chakrabarti, Shaona Chatterjee, M. S. Shekhawat, A. Molla
Lithium aluminosilicate glass-ceramics has many uses in high-tech applications. Beta quartz or spodumene solid solution phase in the Li2O-Al2O3-SiO2-P2O5 glass system has been precipitated by controlled heat-treatment of the parent glass. These glasses prepared by melt-quench technique. High transparency (>80%) in the visible wavelength range has been observed in the material by UV-VIS-NIR spectrometry. FTIR spectra indicated the presence of Si-O as well as Al-O bonds in the glass-ceramics. The LAS glass ceramics showed moderate flexural strength (~80 MPa) and young’s modulus (~50 GPa). Microstructural characterization of the heat-treated glass ceramics by FESEM and TEM showed nano-crystalline spherical particles of 30-40 nm, which provided a rationale for its high transparency and good mechanical properties that may open up possibilities for newer applications.
{"title":"Optical and Mechanical Properties of Lithium Aluminosilicate Glass-ceramics","authors":"Anil Kumar, Anirban Chakrabarti, Shaona Chatterjee, M. S. Shekhawat, A. Molla","doi":"10.61343/jcm.v1i01.5","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.5","url":null,"abstract":"Lithium aluminosilicate glass-ceramics has many uses in high-tech applications. Beta quartz or spodumene solid solution phase in the Li2O-Al2O3-SiO2-P2O5 glass system has been precipitated by controlled heat-treatment of the parent glass. These glasses prepared by melt-quench technique. High transparency (>80%) in the visible wavelength range has been observed in the material by UV-VIS-NIR spectrometry. FTIR spectra indicated the presence of Si-O as well as Al-O bonds in the glass-ceramics. The LAS glass ceramics showed moderate flexural strength (~80 MPa) and young’s modulus (~50 GPa). Microstructural characterization of the heat-treated glass ceramics by FESEM and TEM showed nano-crystalline spherical particles of 30-40 nm, which provided a rationale for its high transparency and good mechanical properties that may open up possibilities for newer applications.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82322913","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}
Natural fibre-reinforced composites are used in various structurally designed goods, from civil engineering to the production of automobiles, thanks to qualities like minimal density, a favourable aspect ratio, biodegradability, and ease of fabrication. The thermal behaviour of natural fibres and composites has also been researched. The thermal degradation kinetics characteristics of composites made with phenol formaldehyde resin and reinforced with untreated Aak fibre with varying fibre loads have been determined using thermogravimetric analysis (TGA). The Flynn-Wall procedure determined each component and composite material's precise apparent activation energy (Ea). Varying fibre load (5, 10, 15, 20 wt.%) was used to reinforce PF resin, and TGA was taken for all composite samples. By observing TGA data composite with 15 wt% fibre load shows maximum thermal stability, it can also be concluded that the thermal stability of prepared composites increases with increasing fibre load. After 15 wt%, it starts to decrease.
{"title":"TGA and Thermal Kinetics of Raw Calotropis Procera Fiber Reinforced PF Composites","authors":"Ritika Sharma, Akshay Joshi, Dimple, G. P. Singh","doi":"10.61343/jcm.v1i01.6","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.6","url":null,"abstract":"Natural fibre-reinforced composites are used in various structurally designed goods, from civil engineering to the production of automobiles, thanks to qualities like minimal density, a favourable aspect ratio, biodegradability, and ease of fabrication. The thermal behaviour of natural fibres and composites has also been researched. The thermal degradation kinetics characteristics of composites made with phenol formaldehyde resin and reinforced with untreated Aak fibre with varying fibre loads have been determined using thermogravimetric analysis (TGA). The Flynn-Wall procedure determined each component and composite material's precise apparent activation energy (Ea). Varying fibre load (5, 10, 15, 20 wt.%) was used to reinforce PF resin, and TGA was taken for all composite samples. By observing TGA data composite with 15 wt% fibre load shows maximum thermal stability, it can also be concluded that the thermal stability of prepared composites increases with increasing fibre load. After 15 wt%, it starts to decrease.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85722495","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}
To maintain a modern livelihood, huge amount of energy is needed which are primarily sourced from fossil fuels that causes global warming and has become an environmental concern. The use of renewable and sustainable green energy has been increasing day by day which needs efficient devices for storage and supply of energy on demand. Among the energy storage devices, batteries have a high energy storage density and low power output, while capacitors possess relatively lower energy density but are capable of exhibiting a high-power output. Dielectric capacitors show high-power density, ultra-fast charge-discharge rates and higher efficiency which make them indispensable for application in electronic devices. Dielectric materials used in the commercially available capacitors are mostly lead based ferroelectric and anti-ferroelectric ceramics. As lead is toxic and causes havoc environmental concerns, the usage of lead/heavy metal containing materials is being gradually phased out and alternate lead-free high-performance materials are sought after. Due to difficulties in ceramic synthesis technique, uncontrolled grain growth and other defects are created resulting in poor dielectric properties. This article tries to present lead-free anti-ferroelectric glass-ceramics based dielectrics as an emerging material for catering to the future green energy demands. Lead free glass-ceramics based dielectrics are multifunctional materials with huge potentials for ferroelectric random access memory (FRAM) and photonic applications, besides their prospects as a future energy storage material.
{"title":"Lead free glass-ceramic dielectrics: A highly potential material for energy storage, photonics and memory applications","authors":"A. Molla","doi":"10.61343/jcm.v1i01.1","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.1","url":null,"abstract":"To maintain a modern livelihood, huge amount of energy is needed which are primarily sourced from fossil fuels that causes global warming and has become an environmental concern. The use of renewable and sustainable green energy has been increasing day by day which needs efficient devices for storage and supply of energy on demand. Among the energy storage devices, batteries have a high energy storage density and low power output, while capacitors possess relatively lower energy density but are capable of exhibiting a high-power output. Dielectric capacitors show high-power density, ultra-fast charge-discharge rates and higher efficiency which make them indispensable for application in electronic devices. Dielectric materials used in the commercially available capacitors are mostly lead based ferroelectric and anti-ferroelectric ceramics. As lead is toxic and causes havoc environmental concerns, the usage of lead/heavy metal containing materials is being gradually phased out and alternate lead-free high-performance materials are sought after. Due to difficulties in ceramic synthesis technique, uncontrolled grain growth and other defects are created resulting in poor dielectric properties. This article tries to present lead-free anti-ferroelectric glass-ceramics based dielectrics as an emerging material for catering to the future green energy demands. Lead free glass-ceramics based dielectrics are multifunctional materials with huge potentials for ferroelectric random access memory (FRAM) and photonic applications, besides their prospects as a future energy storage material.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"49 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73764871","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}
Perovskite solar cells (PSC), with their high efficiency, low production costs, and diverse uses, have emerged as a viable technology for sustainable energy generation. The present study examines perovskite solar cells' benefic aspects and associated constraints, emphasizing their potential for futuristic advancement. Furthermore, the remarkable applications of perovskites in energy generation encouraged us to investigate the Power conversion efficiency (PCE) of perovskite solar cells compared with other solar energy technologies. Lastly, to resolve issues and promote their equitable adoption, the study presented recommendations for subsequent investigation and advancement.
{"title":"Potential Functionality of Perovskite Solar Cells: A Brief Review","authors":"Surbhi Choudhary","doi":"10.61343/jcm.v1i01.2","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.2","url":null,"abstract":"Perovskite solar cells (PSC), with their high efficiency, low production costs, and diverse uses, have emerged as a viable technology for sustainable energy generation. The present study examines perovskite solar cells' benefic aspects and associated constraints, emphasizing their potential for futuristic advancement. Furthermore, the remarkable applications of perovskites in energy generation encouraged us to investigate the Power conversion efficiency (PCE) of perovskite solar cells compared with other solar energy technologies. Lastly, to resolve issues and promote their equitable adoption, the study presented recommendations for subsequent investigation and advancement.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81151679","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, we have calculated the structural and electronic properties of Sc doped GaN in different configurations. This study has been done using first principles full potential linearized argumented plane wave (FP-LAPW) method within the framework of Density Functional Theory. Here we used the generalized gradient approximation (GGA) of Perdew, Burke and Ernzerhof for exchange and correlation effects. Our results obtained for structural parameters and band structures are in good agreement with experimental results as well as other theoretical work.
{"title":"Ab-initio study of structural and electronic properties of Ga1-xScxN","authors":"Sahil Soni, D. Ahlawat","doi":"10.61343/jcm.v1i01.3","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.3","url":null,"abstract":"In this work, we have calculated the structural and electronic properties of Sc doped GaN in different configurations. This study has been done using first principles full potential linearized argumented plane wave (FP-LAPW) method within the framework of Density Functional Theory. Here we used the generalized gradient approximation (GGA) of Perdew, Burke and Ernzerhof for exchange and correlation effects. Our results obtained for structural parameters and band structures are in good agreement with experimental results as well as other theoretical work.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81860735","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 Amaranthaceae family plant, Aerva Tomentosa, grows abundantly in western Rajasthan, India. In the production of bio composites, the Aerva Tomentosa (Bui) can be used successfully as natural fibers. In this study, Aerva Tomentosa (Bui) fibers were extracted from the Bui plant and treated with an alkaline solution containing 5% NaOH. The investigation involved morphological and chemical characteristics of the extracted untreated Aerva Tomentosa fibers (ATF(0)) and extracted alkali treated Aerva Tomentosa fibers (ATF(1)). According to an analysis of ATF(0) and ATF(1) using Fourier-transform infrared (FTIR) spectroscopy, both ATF(0) and ATF(1) included functional groups for cellulose, hemicellulose, and lignin. The elimination of extractives from the surface of the fibers isolated from Aerva tomentosa is demonstrated by FESEM and EDS analysis. The surface of untreated fibers becomes smoother following treatment, as evidenced by FESEM images taken at various resolutions.
{"title":"Comparative study of FESEM, EDS, FTIR on alkali treated and untreated fiber of Aerva","authors":"Dimple, G. P. Singh, Ritika Sharma","doi":"10.61343/jcm.v1i01.8","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.8","url":null,"abstract":"The Amaranthaceae family plant, Aerva Tomentosa, grows abundantly in western Rajasthan, India. In the production of bio composites, the Aerva Tomentosa (Bui) can be used successfully as natural fibers. In this study, Aerva Tomentosa (Bui) fibers were extracted from the Bui plant and treated with an alkaline solution containing 5% NaOH. The investigation involved morphological and chemical characteristics of the extracted untreated Aerva Tomentosa fibers (ATF(0)) and extracted alkali treated Aerva Tomentosa fibers (ATF(1)). According to an analysis of ATF(0) and ATF(1) using Fourier-transform infrared (FTIR) spectroscopy, both ATF(0) and ATF(1) included functional groups for cellulose, hemicellulose, and lignin. The elimination of extractives from the surface of the fibers isolated from Aerva tomentosa is demonstrated by FESEM and EDS analysis. The surface of untreated fibers becomes smoother following treatment, as evidenced by FESEM images taken at various resolutions.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86760435","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 Internet of Things (IoT) refers to advance devices other than computers that are connected to the Internet and can send and receive information. IoT is a new paradigm that has transformed traditional lifestyles into high-tech ones. It is the notion of a ubiquitous computer environment in which custom-sized electronics are effortlessly implanted into common things. Electronic sensors at the heart of the IoT detect physical/environmental occurrences, translate these measurements into electrical signals, and wirelessly transfer the data for remote computation. Indeed, the 5G communication and cloud computing stimulate the research in applications of carbon nanotubes in electronic devices. CNTs have demonstrated potential applications in electronics, biosensing, artificial intelligence and the Internet of ThingsIn present study, we report the synthesis of Multi Wall Carbon Nanotubes (MWCNTs) by Chemical Vapour Deposition (CVD) at 600C on Zinc Oxide (ZnO) catalyst coated silicon substrate by thermal evaporation technique. As-grown MWCNTs are characterized by Scanning Electron Microscope (SEM). High density growth of MWCNTs have been confirmed by SEM image. Catalyst nanoparticles play very important roles in the decomposition of the hydrocarbon source and to provide nucleation site for growth of MWCNTs. High MWCNT density is required for IoT-based sensors with high performance, sensitivity, selectivity, and distant sensing. Because IoT not only provides services but also creates massive amounts of data. Hence, this study would be helpful for the next generation 5G communication and cloud computing stimulate to enhance living style.
物联网(Internet of Things, IoT)是指除计算机之外，连接到互联网并能够发送和接收信息的先进设备。物联网是将传统生活方式转变为高科技生活方式的新范式。这是一个无处不在的计算机环境的概念，在这个环境中，定制尺寸的电子设备毫不费力地植入到普通的东西中。物联网核心的电子传感器检测物理/环境事件，将这些测量结果转换为电信号，并无线传输数据以进行远程计算。事实上，5G通信和云计算刺激了碳纳米管在电子设备中的应用研究。碳纳米管在电子、生物传感、人工智能和物联网等领域具有广泛的应用前景。本研究报道了在氧化锌催化剂包覆的硅衬底上，采用热蒸发技术，在600℃的温度下化学气相沉积(CVD)合成多壁碳纳米管(MWCNTs)。通过扫描电子显微镜(SEM)对生长态MWCNTs进行了表征。SEM图像证实了MWCNTs的高密度生长。催化剂纳米颗粒在烃源的分解和MWCNTs的生长提供成核场所中起着重要的作用。基于物联网的传感器需要高MWCNT密度，具有高性能、灵敏度、选择性和远距离传感。因为物联网不仅提供服务，还创造了大量的数据。因此，本研究将有助于下一代5G通信和云计算刺激人们改善生活方式。
{"title":"Synthesis of Multi Wall Carbon Nanotubes based Electronic Sensors for Internet of Things (IoT)","authors":"Muhammad Bilal, Shama Parveen","doi":"10.61343/jcm.v1i01.10","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.10","url":null,"abstract":"The Internet of Things (IoT) refers to advance devices other than computers that are connected to the Internet and can send and receive information. IoT is a new paradigm that has transformed traditional lifestyles into high-tech ones. It is the notion of a ubiquitous computer environment in which custom-sized electronics are effortlessly implanted into common things. Electronic sensors at the heart of the IoT detect physical/environmental occurrences, translate these measurements into electrical signals, and wirelessly transfer the data for remote computation. Indeed, the 5G communication and cloud computing stimulate the research in applications of carbon nanotubes in electronic devices. CNTs have demonstrated potential applications in electronics, biosensing, artificial intelligence and the Internet of ThingsIn present study, we report the synthesis of Multi Wall Carbon Nanotubes (MWCNTs) by Chemical Vapour Deposition (CVD) at 600C on Zinc Oxide (ZnO) catalyst coated silicon substrate by thermal evaporation technique. As-grown MWCNTs are characterized by Scanning Electron Microscope (SEM). High density growth of MWCNTs have been confirmed by SEM image. Catalyst nanoparticles play very important roles in the decomposition of the hydrocarbon source and to provide nucleation site for growth of MWCNTs. High MWCNT density is required for IoT-based sensors with high performance, sensitivity, selectivity, and distant sensing. Because IoT not only provides services but also creates massive amounts of data. Hence, this study would be helpful for the next generation 5G communication and cloud computing stimulate to enhance living style.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79084832","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}
Electronic absorption and emission spectra were recorded for chelates of Pr (III) with 2-hydroxy-4-nirobenzoic acid, 3-hydroxy-4-nitrobenzoic acid, 4-hydroxy-3-nitrobenzoic acid, 4-methyl-2-nitrophenol, 4-chloro-2-nitrophenol and 5-fluoro-2-nitrophenol in various M: L stoichiometry and for different pH. Intensity and energy of intraconfigurational 4fn transitions have been determined from the absorption spectra. The spectroscopic parameters like Slater-Condon (Fk), Racah (Ek), Lande (ζ4f) and Judd-Oflet parameters Ωλ (λ=2, 4, 6) have been computed using statistical method like partial regression method. The Judd-Oflet intensity parameters and fluorescence spectra have been used to calculate radiative life time (τ) of two excited states 3P0 and 1D2. From the fluorescence spectra of the chelates, effective line width (Δλeff) spontaneous emission probability (A), fluorescence branching ratio (β) and stimulated emission cross section (σ) have been determined for three optical transition 3P0-3H4, 3P0-3H5 and 1D2-3H4. Spectroscopic and intensity parameters were studied with respect to the ligand field symmetry and degree of bond covalency.
{"title":"Photo-physical properties of Pr (III) chelates of substituted nitrobenzoic acid and nitrophenols","authors":"Alok Vyas, Mahendra Vyas, M. S. Shekhawat","doi":"10.61343/jcm.v1i01.7","DOIUrl":"https://doi.org/10.61343/jcm.v1i01.7","url":null,"abstract":"Electronic absorption and emission spectra were recorded for chelates of Pr (III) with 2-hydroxy-4-nirobenzoic acid, 3-hydroxy-4-nitrobenzoic acid, 4-hydroxy-3-nitrobenzoic acid, 4-methyl-2-nitrophenol, 4-chloro-2-nitrophenol and 5-fluoro-2-nitrophenol in various M: L stoichiometry and for different pH. Intensity and energy of intraconfigurational 4fn transitions have been determined from the absorption spectra. The spectroscopic parameters like Slater-Condon (Fk), Racah (Ek), Lande (ζ4f) and Judd-Oflet parameters Ωλ (λ=2, 4, 6) have been computed using statistical method like partial regression method. The Judd-Oflet intensity parameters and fluorescence spectra have been used to calculate radiative life time (τ) of two excited states 3P0 and 1D2. From the fluorescence spectra of the chelates, effective line width (Δλeff) spontaneous emission probability (A), fluorescence branching ratio (β) and stimulated emission cross section (σ) have been determined for three optical transition 3P0-3H4, 3P0-3H5 and 1D2-3H4. Spectroscopic and intensity parameters were studied with respect to the ligand field symmetry and degree of bond covalency.","PeriodicalId":37739,"journal":{"name":"Journal of Condensed Matter Nuclear Science","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78260040","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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