发布求助
文献互助 智能选刊 最新文献

Journal of Optoelectronic and Biomedical Materials最新文献

筛选
英文 中文
Study of High field conduction in Se based Chalcogenide glasses 硒基硫系玻璃的高场导电性研究
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-07-01 DOI: 10.15251/jobm.2022.143.129
N. Yaduvanshi
{"title":"Study of High field conduction in Se based Chalcogenide glasses","authors":"N. Yaduvanshi","doi":"10.15251/jobm.2022.143.129","DOIUrl":"https://doi.org/10.15251/jobm.2022.143.129","url":null,"abstract":"The present work reports the study of high field conduction in thin films of Se90Ge10-x Inx (x=2,6) because high field conduction in chalcogenide glasses is affected by the presence of localised states at the band edges as well as the defect states present in the mobility gap.To measure the density of states in these thin films , space charge limited conduction technique is used. I-V characteristics have been measured at various fixed temperatures. An ohmic behaviour is observed at low electric fields upto 102V/cm. Superohmic behaviour is observed at high electric fields (103 -104 V/cm).High field conduction theory of space charge limited conduction for uniform distribution of localised states in the mobility gap fits well with the experimental data.Using this theory, the density of defect states near Fermi level is calculated for all glassy alloys.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45495060","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
Enhanced photocatalytic degradation of Gd-doped Bi2O3 for selective dyes under UV light irradiation 紫外光照射下Gd掺杂Bi2O3对选择性染料的光催化降解
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-07-01 DOI: 10.15251/jobm.2022.143.77
E. Dhanasekaran, N. Sivakumar, N. Sriharan
{"title":"Enhanced photocatalytic degradation of Gd-doped Bi2O3 for selective dyes under UV light irradiation","authors":"E. Dhanasekaran, N. Sivakumar, N. Sriharan","doi":"10.15251/jobm.2022.143.77","DOIUrl":"https://doi.org/10.15251/jobm.2022.143.77","url":null,"abstract":"Nanorod like structured bare Bi2O3 and Gd-doped Bi2O3 (Gd-Bi2O3) are synthesized by simple hydrothermal method. The crystal structure, compositions and surface morphology of the synthesized nanoparticles are characterized by X-ray powder diffraction (XRD), Scanning electron microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDS) and UV-visible absorbance spectroscopy (UV). The photocatalytic efficiency of as synthesized samples is evaluated by degradation of aqueous solution of dyes from different classes under the pH = 4, 6, 8 in presence of UV light. Comparatively, Gd-Bi2O3 exhibits significant degradation of dye stuffs than bare Bi2O3. In our present study, the factors which are emphasis the photocatalytic activity of Gd-Bi2O3 and possible mechanism for photocatalytic degradation also narrated briefly.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48712496","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
ZnO nanoparticles and their properties as surface coating materials against coronavirus: viewpoint ZnO纳米颗粒及其作为冠状病毒表面涂层材料的性能:观点
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-04-01 DOI: 10.15251/jobm.2022.142.53
H. Idriss, M. Habib, A. Alakhras, H. M. El Khair
{"title":"ZnO nanoparticles and their properties as surface coating materials against coronavirus: viewpoint","authors":"H. Idriss, M. Habib, A. Alakhras, H. M. El Khair","doi":"10.15251/jobm.2022.142.53","DOIUrl":"https://doi.org/10.15251/jobm.2022.142.53","url":null,"abstract":"A pandemic of coronavirus infection is causing a significant public health hazard globally, putting millions of people at risk in an increasing amount of countries. Nanostructured materials have been recognized to be highly efficient against coronaviruses. ZnO nanoparticles possess unique features that enable to act as anti-bacterial and anti-viral. Hence, the aim of the current investigation is to produce zinc oxide nanoparticles and utilized as surface coating materials against COVID-19. Thermal decomposition has been utilized in this investigation to fabricate ZnO nanoparticles with crystallite of 41 and 55 nm. The study outcomes demonstrated that Zinc nanoparticles is a favorable material for future usage as an anti-coronavirus surface due to their ecologically friendly features and exceptional physical and chemical functionality.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42247141","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
Antibacterial activity of biosynthesized ZnO nanoflakes using Pandanus tectorius leaf extracts 虎芋叶提取物生物合成ZnO纳米片的抑菌活性研究
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-04-01 DOI: 10.15251/jobm.2022.142.35
S. Florence, C. Manna, K. Prabha, M. Bakri, R. A. Hagazy, M. Sowjanya, M. Shariq
{"title":"Antibacterial activity of biosynthesized ZnO nanoflakes using Pandanus tectorius leaf extracts","authors":"S. Florence, C. Manna, K. Prabha, M. Bakri, R. A. Hagazy, M. Sowjanya, M. Shariq","doi":"10.15251/jobm.2022.142.35","DOIUrl":"https://doi.org/10.15251/jobm.2022.142.35","url":null,"abstract":"The crystalline structure and morphology of semiconductor nanoparticles are important factors for determining their optical properties. To synthesis such nanoparticles, green synthesis is one of the most popular methods. In these green synthesis procedures, the plant extracts can be added to control the growth and particle size. In this present work, ZnO nanoflakes are synthesized in a cost-effective green synthsis method using pandamus tecctorius leaf extract. The structure and morphology of as synthesized ZnO nanoflakes have been characterized by X-ray diffraction (XRD), Raman Spectroscopy, scanning electron microscopy (SEM), photoluminescence (PL) spectrophotometry and transmission electron microscopy (TEM). The SEM and TEM images reveal the formation of ZnO nanoflakes. The hexagonal wurtzite structure has been predicted from XRD results. Strong blue absorption and the enhanced luminescence property with respect to bulk have been observed from PL studies.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47120791","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, characterization with optical property of Zn-O NPs using sol-gel route in alkaline medium 碱性介质中溶胶-凝胶法合成Zn-O纳米颗粒及其光学性能
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-04-01 DOI: 10.15251/jobm.2022.142.69
D. Tamilselvi, N. Velmani, K. Rathidevi, V. Geethalakshmi, R. Nandhini
{"title":"Synthesis, characterization with optical property of Zn-O NPs using sol-gel route in alkaline medium","authors":"D. Tamilselvi, N. Velmani, K. Rathidevi, V. Geethalakshmi, R. Nandhini","doi":"10.15251/jobm.2022.142.69","DOIUrl":"https://doi.org/10.15251/jobm.2022.142.69","url":null,"abstract":"Zn-O nanoparticles were successfully synthesized by sol-gel route using ZnSO4.7H2O as precursor in alkaline medium. Structural, morphological and optical property of Zn-O NPs was analyzed. Zn-O NPs were characterized by using X-ray diffraction (XRD), Fourier transform infrared spectral (FTIR), UV-Visible spectrophotometer, scanning electron microscopy (SEM) and Energy Dispersive X-ray analysis (EDAX).XRD pattern shows the purity of synthesized Zn-O nanoparticles particle size. Scanning electron microscopy (SEM) observations revealed remarkable change in morphological structure of Zn-O NPs. Analysis studies was confirmed, the functional groups and chemical bonding present in the synthesized Zn-O nanoparticles.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43581863","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 characterization of new solid polymer electrolyte (PEG + CH3COONa) for solid-state sodium batteries 固态钠电池用新型固体聚合物电解质(PEG + CH3COONa)的合成与表征
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-04-01 DOI: 10.15251/jobm.2022.142.63
A. Polu, V. Mekala, T. Ramesh
{"title":"Synthesis and characterization of new solid polymer electrolyte (PEG + CH3COONa) for solid-state sodium batteries","authors":"A. Polu, V. Mekala, T. Ramesh","doi":"10.15251/jobm.2022.142.63","DOIUrl":"https://doi.org/10.15251/jobm.2022.142.63","url":null,"abstract":"Using the solution-cast approach, new solid polymer electrolyte films containing sodium acetate (CH3COONa) in poly (ethylene glycol) were prepared. These polymer electrolyte systems have been characterized using a variety of experimental approaches, including temperature-dependent conductivity and DSC. The endothermic peak at 59.42°C, which corresponds to the melting temperature of pure PEG, is revealed by DSC measurements. Due to the addition of salt to the polymer, a minor movement in the melting point, Tm, towards lower temperatures has been detected. At 30°C, the 80PEG+20CH3COONa electrolyte system had a maximum conductivity of 7.9 × 10-6 S/cm. When compared to pure PEG, the conductivity enhanced by two orders of magnitude. The magnitude of conductivity increased as the temperature raised.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47255735","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
DSSCs based on ZnO photoelectrodes sensitized with natural dyes extracted from the bark of Brazil and Taray 基于用从巴西和Taray树皮中提取的天然染料敏化的ZnO光电极的DSSC
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-04-01 DOI: 10.15251/jobm.2022.142.29
A. G. Flota Robledo, J. Pantoja Enríquez, C. A. Meza Avendaño, G. Pérez Hernández, P. J. Juárez Gutiérrez
{"title":"DSSCs based on ZnO photoelectrodes sensitized with natural dyes extracted from the bark of Brazil and Taray","authors":"A. G. Flota Robledo, J. Pantoja Enríquez, C. A. Meza Avendaño, G. Pérez Hernández, P. J. Juárez Gutiérrez","doi":"10.15251/jobm.2022.142.29","DOIUrl":"https://doi.org/10.15251/jobm.2022.142.29","url":null,"abstract":"We report the extraction of natural dyes from Brazil and Taray bark, the impregnation of these dyes in thin films of ZnO synthesized via sol-gel method and deposited by Doctor Blade and finally the fabrication of dye sensitized solar cells (DSSC). The ZnO/dyes structures were characterized using UV-Visible and infrared spectroscopy. The analysis of the infrared spectra shows that the semiconductors impregnated with the extracted dyes exhibit the characteristic of dye anchorage in ZnO. The photovoltaic performance and efficiency of the assembled DSSCs was evaluated.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45439138","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
Synthesis of PVA-Fe2O3-TiO2 hybrid structure for biomedical application 生物医学用PVA-Fe2O3-TiO2杂化结构的合成
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-04-01 DOI: 10.15251/jobm.2022.142.43
H. M. A. Algelal, S. Kareem, K. A. Mohammed, E. J. Khamees, A. S. Abed, A. H. Alkhayatt, R. R. Al-Okbi
{"title":"Synthesis of PVA-Fe2O3-TiO2 hybrid structure for biomedical application","authors":"H. M. A. Algelal, S. Kareem, K. A. Mohammed, E. J. Khamees, A. S. Abed, A. H. Alkhayatt, R. R. Al-Okbi","doi":"10.15251/jobm.2022.142.43","DOIUrl":"https://doi.org/10.15251/jobm.2022.142.43","url":null,"abstract":"This work investigates the structure, morphology, and optical properties of TiO2 nanoparticles embedded in a Fe2O3–PVA composite matrix. The samples were examined using a variety of techniques, including field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), absorption and transmission spectra, and Fourier transformation infrared (FTIR). Crystallography information revealed the presence of TiO2 doesn’t effect in the crystal structure of PVA-Fe2O3. The manufactured composites demonstration strong absorption in the range of 440–570 nm. It is important that the highest absorption of these composites gradually shifted to the shorter wavelength region with presence of TiO2. PVA-Fe2O3 is highly transparent with transmittance of around 85 % in range 600-800 nm. After addition of 2.5 % by weight of TiO2 nanoparticles, the transmittance of nanocomposite drops to 75% in the same range of wavelength . Further addition of nanoparticles reduced the percentage transmittance to 68%. The results specify that as the TiO2 ratio increases, the band gap be wider.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46338968","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
Transparent glass coated with silver colloid nanoparticles candidate as an antiCoronavirus surface - Perspective 涂覆银胶体纳米粒子的透明玻璃作为抗冠状病毒表面的候选材料——展望
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-01-01 DOI: 10.15251/jobm.2022.141.19
A. Alakhras, H. M. El Khair, M. Habib, T. Odeh, H. Idriss
{"title":"Transparent glass coated with silver colloid nanoparticles candidate as an antiCoronavirus surface - Perspective","authors":"A. Alakhras, H. M. El Khair, M. Habib, T. Odeh, H. Idriss","doi":"10.15251/jobm.2022.141.19","DOIUrl":"https://doi.org/10.15251/jobm.2022.141.19","url":null,"abstract":"Silver nanoparticles have a wide range of anti-bacterial, anti-fungal, and anti-viral effects due to their unique properties. In this work, citrate reduction has been employed to fabricate silver colloidal nanoparticles with 12 nm. The plasmon resonance spectra of nanoscopic silver particles adsorbed onto transparent electrodes in contact with various electrolyte solutions and concentrations of NaC1O4, KPF6, and NaCl were studied. Potentials were controlled with a galvanostat, and UV/visible spectrophotometer was employed to obtain the optical spectra. The results showed the electrolyte identity, potential-induced redshifts, and damping is most pronounced for NaCl, whereas spectral changes are weaker in the cases of NaC1O4 and KPF6 solutions. Hence, due to the noble physical and biological properties of silver colloid nanoparticles, it becomes a great candidate and promising in the future to be used as an anti-coronavirus surface.","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44274262","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, characterization and applications of sodium alginate and polyvinyl pyrollidine based clay reinforced biopolymers nanocomposites 海藻酸钠和聚乙烯醇软酯基粘土增强生物聚合物纳米复合材料的合成、表征及应用
IF 1.1
Journal of Optoelectronic and Biomedical Materials Pub Date : 2022-01-01 DOI: 10.15251/jobm2022.1411
{"title":"Synthesis, characterization and applications of sodium alginate and polyvinyl pyrollidine based clay reinforced biopolymers nanocomposites","authors":"","doi":"10.15251/jobm2022.1411","DOIUrl":"https://doi.org/10.15251/jobm2022.1411","url":null,"abstract":"","PeriodicalId":43605,"journal":{"name":"Journal of Optoelectronic and Biomedical Materials","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67045646","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信