DAE SOLID STATE PHYSICS SYMPOSIUM 2018最新文献_第4页

Determination of crystallite size, number of graphene layers and defect density of graphene oxide (GO) and reduced graphene oxide (RGO) 氧化石墨烯(GO)和还原氧化石墨烯(RGO)晶体尺寸、石墨烯层数和缺陷密度的测定

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5112945

Ashish Kaushal, S. Dhawan, Vishal Singh

{"title":"Determination of crystallite size, number of graphene layers and defect density of graphene oxide (GO) and reduced graphene oxide (RGO)","authors":"Ashish Kaushal, S. Dhawan, Vishal Singh","doi":"10.1063/1.5112945","DOIUrl":"https://doi.org/10.1063/1.5112945","url":null,"abstract":"Determination of crystallite size, number of graphene layers, interlayer spacing, and defect density with the use of X-ray diffraction and Raman spectroscopic technique. GO was synthesized by using Simple Hummer’s method and was subjected to chemical reduction by using tri-sodium citrate. Particularly, the above parameters have presented by some mathematical equation usage. The shrinkage in the dimensions of crystallite upon reduction leads to decrease in number of graphene layers in each domain and clearly increase the defect density. XRD and Raman stated the formation of GO and its reduction to the formation of RGO.Determination of crystallite size, number of graphene layers, interlayer spacing, and defect density with the use of X-ray diffraction and Raman spectroscopic technique. GO was synthesized by using Simple Hummer’s method and was subjected to chemical reduction by using tri-sodium citrate. Particularly, the above parameters have presented by some mathematical equation usage. The shrinkage in the dimensions of crystallite upon reduction leads to decrease in number of graphene layers in each domain and clearly increase the defect density. XRD and Raman stated the formation of GO and its reduction to the formation of RGO.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81556172","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}

引用次数: 45

Structure-property correlations of bis(nitrofurazano) furazan(BNFF-1): A density functional theory study 二硝基呋喃呋喃(BNFF-1)的结构-性质相关性:密度泛函理论研究

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5113230

S. Mondal, J. Kumar, E. N. Rao, G. Vaitheeswaran

{"title":"Structure-property correlations of bis(nitrofurazano) furazan(BNFF-1): A density functional theory study","authors":"S. Mondal, J. Kumar, E. N. Rao, G. Vaitheeswaran","doi":"10.1063/1.5113230","DOIUrl":"https://doi.org/10.1063/1.5113230","url":null,"abstract":"This study presents structural, elastic and electronic properties of BNFF-1 using density functional theory (DFT). For obtaining correct ground state structure, two different dispersion corrected methods (Grimme (G06) and Tkatchenko-Scheffler (TS)) along with standard DFT functional have been used. The obtained results with TS functional show less deviation (∼1.2%) than G06 (∼1.7%). This small difference could be due to the relative variation in dispersion coefficients incorporated. The structural parameters from van der Waals (vdW) corrected schemes clearly informs about the role of weak interactions and bond polarizability differences on the structural stability of BNFF-1. The calculated bulk modulus and its pressure derivative using third order birch murnaghan equation of state are 11.43 GPa (17.46 GPa: polycrystalline using Hill approximation) and 8.17 respectively. From the magnitude of bulk modulus we can conclude that BNFF-1 is similar to well known energetic material RDX. The order of compressibility of the lattice parameters obtained from the first order pressure coefficient is c > a > b. The study of elastic constants and the related properties of this material has also been carried out to know the impact and frictional sensitivity of this material. At the end, electronic band structure calculation results at TS level, reveal that, BNFF-1 is a direct band gap (3.02 eV) material along Γ-Γ direction in the first Brillion zone. Overall, the effect of bond polarizability through TS-scheme is well addressed in order to understand the various structure-property correlations.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82830402","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}

引用次数: 0

Fluorescence imaging of Er3+/Yb3+ codoped tungsten tellurite glasses with silver nanoparticles 纳米银Er3+/Yb3+共掺碲酸钨玻璃的荧光成像

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5113104

S. K. Mahajan, R. Jain

{"title":"Fluorescence imaging of Er3+/Yb3+ codoped tungsten tellurite glasses with silver nanoparticles","authors":"S. K. Mahajan, R. Jain","doi":"10.1063/1.5113104","DOIUrl":"https://doi.org/10.1063/1.5113104","url":null,"abstract":"The Er3+ - Yb 3+ doped TeO2 -WO3- Li2O (TWLEY) ternary doped with and without Ag nanoparticles (NPs) glasses have been synthesized by melt quenching technique. Surface Plasmon resonance bands in the glasses are measured and verified in the range 535-550 nm and 640-650 nm under 488nm laser excitation by lambda scanning technique of the confocal fluorescence microscope. Fluorescence Intensity map of TWLEY and TWLEY03A are observed at 545nm. The Fluorescence Lifetime Imaging Microscopy (FLIM) studies has been conducted for the imaging and lifetime measurement using pulsed laser diode of 405 nm, 6ns,40 MHz of PicoQuant and result are analyzed by decay and lifetime histograms. This work shows that Plasmon enhances photoluminescence of silver and rare-earth doped glasses may be utilized for biomedical imaging.The Er3+ - Yb 3+ doped TeO2 -WO3- Li2O (TWLEY) ternary doped with and without Ag nanoparticles (NPs) glasses have been synthesized by melt quenching technique. Surface Plasmon resonance bands in the glasses are measured and verified in the range 535-550 nm and 640-650 nm under 488nm laser excitation by lambda scanning technique of the confocal fluorescence microscope. Fluorescence Intensity map of TWLEY and TWLEY03A are observed at 545nm. The Fluorescence Lifetime Imaging Microscopy (FLIM) studies has been conducted for the imaging and lifetime measurement using pulsed laser diode of 405 nm, 6ns,40 MHz of PicoQuant and result are analyzed by decay and lifetime histograms. This work shows that Plasmon enhances photoluminescence of silver and rare-earth doped glasses may be utilized for biomedical imaging.","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":"86705451","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}

引用次数: 0

Synthesis and initial characterization of PS-PMMA blend film for annealing induced phase mixing study PS-PMMA共混膜的合成及初步表征

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5113135

S. Tripathi, P. Rao, S. Jha

引用次数: 0

Fabrication and characterization of porous mullite ceramics 多孔莫来石陶瓷的制备与表征

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5112863

G. Kiran, Kundrapu Shyam Kumar, A. Yadav, S. Bhattacharyya

{"title":"Fabrication and characterization of porous mullite ceramics","authors":"G. Kiran, Kundrapu Shyam Kumar, A. Yadav, S. Bhattacharyya","doi":"10.1063/1.5112863","DOIUrl":"https://doi.org/10.1063/1.5112863","url":null,"abstract":"Porous mullite was fabricated from kaolin and alumina using naphthalene as a pore-former. For different wt.% of naphthalene addition, the apparent porosity (%) was analysed. The mechanical strength was estimated through flexural strength and diametral tensile strength. Fabricated pellets were sintered at 1400°C, 1500°C, 1600°C to study the effect of pore former on phase formation and porosity distribution through X-Ray diffraction study and FESEM microstructure analysis. The analysis showed 39.79% of porosity in the case of 20wt.% naphthalene addition with flexural strength of 21.93MPa. This pointed towards the application of this product as a membrane support material.Porous mullite was fabricated from kaolin and alumina using naphthalene as a pore-former. For different wt.% of naphthalene addition, the apparent porosity (%) was analysed. The mechanical strength was estimated through flexural strength and diametral tensile strength. Fabricated pellets were sintered at 1400°C, 1500°C, 1600°C to study the effect of pore former on phase formation and porosity distribution through X-Ray diffraction study and FESEM microstructure analysis. The analysis showed 39.79% of porosity in the case of 20wt.% naphthalene addition with flexural strength of 21.93MPa. This pointed towards the application of this product as a membrane support material.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87985300","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}

引用次数: 1

Structural and dielectric properties of Na0.7Bi0.3TiO3 Na0.7Bi0.3TiO3的结构和介电性能

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5112965

S. Dagar, Ashima Hooda, D. Ahlawat, N. Sharma, S. Khasa

引用次数: 0

Effect of tetragonal distortion induced by interstitial C-doping in L10-FeNi 间质c掺杂对L10-FeNi中四方畸变的影响

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5113336

P. Rani, J. Thakur, Ankur Taya, M. K. Kashyap

引用次数: 2

Thermal, optical and Raman spectroscopy studies of lithium tellurite glasses containing molybdenum and tungsten ions 含钼和钨离子碲酸锂玻璃的热、光学和拉曼光谱研究

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5113092

A. Kaur, A. Khanna

{"title":"Thermal, optical and Raman spectroscopy studies of lithium tellurite glasses containing molybdenum and tungsten ions","authors":"A. Kaur, A. Khanna","doi":"10.1063/1.5113092","DOIUrl":"https://doi.org/10.1063/1.5113092","url":null,"abstract":"Lithium tellurite glasses are fabricated and characterized by density, X-ray diffraction (XRD), thermal analysis, UV-Visible and Raman spectroscopy. Density of glasses decreases with incorporation of MoO3 in lithium tellurite glasses, whereas density increases with the addition of WO3, these changes in density are due to different molar mass of constituents. The introduction of MoO3 and WO3 in lithium tellurite glasses enhances the glass transition temperature and thermal stability. Raman studies revealed that the network structure of the glasses consists of TeO4 and TeO3/TeO3+1 units. The present glass system have potential application for development of laser materials, optical waveguides, and crystal-free optical fibres.Lithium tellurite glasses are fabricated and characterized by density, X-ray diffraction (XRD), thermal analysis, UV-Visible and Raman spectroscopy. Density of glasses decreases with incorporation of MoO3 in lithium tellurite glasses, whereas density increases with the addition of WO3, these changes in density are due to different molar mass of constituents. The introduction of MoO3 and WO3 in lithium tellurite glasses enhances the glass transition temperature and thermal stability. Raman studies revealed that the network structure of the glasses consists of TeO4 and TeO3/TeO3+1 units. The present glass system have potential application for development of laser materials, optical waveguides, and crystal-free optical fibres.","PeriodicalId":10874,"journal":{"name":"DAE SOLID STATE PHYSICS SYMPOSIUM 2018","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78889400","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}

引用次数: 2

One-pot synthesis of Cu-based metal-organic frameworks for environmental applications 一锅法合成环境用铜基金属有机骨架

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5113041

Monika Nehra, D. Kedia, N. Dilbaghi, A. A. Hassan, Sandeep Kumar

引用次数: 2

Facile synthesis of Ag-Au nano-alloys and their catalytic applications 银金纳米合金的快速合成及其催化应用

DAE SOLID STATE PHYSICS SYMPOSIUM 2018 Pub Date : 2019-07-12 DOI: 10.1063/1.5112972

M. B. Newmai, A. Dahiya, P. Kumar

引用次数: 0