Journal of Nano-and electronic Physics最新文献_第4页

Surface Laser Melting of a Carburized LPBF-manufactured Ti-based Biomedical Grade Alloy 渗碳lpbf制备的ti基生物医学级合金的表面激光熔化

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(4).04035

B. V. Efremenko, Yu. G. Chabak, E. V. Tsvetkova, A. V. Dzherenova, V. G. Efremenko, F. Kromka, V. I. Zurnadzhy, I. M. Olejnik

引用次数: 0

Selection of Ideal IoT Based Overhead Conductor for Optimizing the Performance of a Small Hydropower Project 基于物联网的理想架空导线选择优化小水电项目性能

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(4).04006

Nameet Kumar Sethy, Manideep Yenugula, Shankha Shubhra Goswami, Amrita Bhola, Dhiren Kumar Behera

引用次数: 0

Synthesis of Surface Structures at Laser-Stimulated Evaporation of a Copper Sulfate Solution in Distilled Water 激光激发蒸馏水蒸发硫酸铜溶液表面结构的合成

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(4).04002

I. I. Bondar, V. V. Suran, O. Y. Minya, O. K. Shuaibov, І. V. Shevera, A. O. Malinina, V. N. Krasilinets

{"title":"Synthesis of Surface Structures at Laser-Stimulated Evaporation of a Copper Sulfate Solution in Distilled Water","authors":"I. I. Bondar, V. V. Suran, O. Y. Minya, O. K. Shuaibov, І. V. Shevera, A. O. Malinina, V. N. Krasilinets","doi":"10.21272/jnep.15(4).04002","DOIUrl":"https://doi.org/10.21272/jnep.15(4).04002","url":null,"abstract":"A methodology, technique, and research results for the synthesis of films on a glass surface upon irradiation of aqueous solutions of copper sulfate with laser radiation are presented. The studies used the radiation of a yttrium-aluminum garnet laser, its second harmonic and the radiation of a semiconductor laser. Solutions with different concentrations of copper sulfate were used. The structure and and characteristics of the control films obtained as a result of drying solutions without exposure to laser radiation. Films synthesized under the action of laser optical characteristics of the films obtained in this case are compared with the structure radiation have both ordered and disordered structures. The characteristic dimensions of the structural elements of these films are 0.5-2 microns. For solutions with low concentrations, the density of the coating of glass substrates with films obtained under the action of laser radiation is much higher than the density of the coating with control films. The transmissions of the films were studied in the spectral range 300-1200 nm. It was found that the transmission of films obtained under the action of laser radiation and control films differ","PeriodicalId":16654,"journal":{"name":"Journal of Nano-and electronic Physics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135700885","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

Bianchi Type V Inflationary Cosmological Model with Bulk Viscosity in General Relativity 广义相对论中具有体黏度的Bianchi V型暴涨宇宙学模型

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(4).04029

Varsha Maheshwari, Laxmi Poonia

{"title":"Bianchi Type V Inflationary Cosmological Model with Bulk Viscosity in General Relativity","authors":"Varsha Maheshwari, Laxmi Poonia","doi":"10.21272/jnep.15(4).04029","DOIUrl":"https://doi.org/10.21272/jnep.15(4).04029","url":null,"abstract":"Our goal in the current paper is to develop Bianchi Type V space time undertaken in framework of massless scalar field with flat potential. Model produces an inflationary universe scenario provided bulk viscosity is present. The Bianchi Type V cosmological model is a homogeneous and anisotropic solution of the Einstein field equations, which describes the evolution of the universe. In this model, the geometry of the universe is characterized by three mutually orthogonal spatial directions, and the time evolution is determined by the matter content of the universe an appropriate transformation is used to solve the Einstein field equations. In order to develop a physical universe model we consider ξθ   (constant) and we have assumed a supplementary condition BC   and B / C  v between metric potential. We investigate the geometrical and physical aspects of the model with in presence of bulk viscosity. The model isotropies under specific conditions and the increase in spatial volume over time describe the inflationary phase of the universe. The model in general represents anisotropic space-time but isotropies at late time. The Hubble parameter decreases with time. At time T = 0, the model possesses a Point Type singularity.","PeriodicalId":16654,"journal":{"name":"Journal of Nano-and electronic Physics","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135700996","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

Optical Absorption of a Composite Based on Two-Layer Nanowires 基于两层纳米线的复合材料的光吸收

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(1).01014

A. O. Koval

引用次数: 0

A Compact Square Split-Ring Resonators Band-pass Filter for X Band Applications 用于X波段应用的紧凑型方形分环谐振器带通滤波器

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(3).03017

M. Bendaoued, A. Es-saleh, B. Nasiri, S. Lakrit, Sudipta Das, R. Mandry, A. Faize

{"title":"A Compact Square Split-Ring Resonators Band-pass Filter for X Band Applications","authors":"M. Bendaoued, A. Es-saleh, B. Nasiri, S. Lakrit, Sudipta Das, R. Mandry, A. Faize","doi":"10.21272/jnep.15(3).03017","DOIUrl":"https://doi.org/10.21272/jnep.15(3).03017","url":null,"abstract":"In this paper, the design of a bandpass filter is discussed. There has been a rising trend in recent years towards the design and development of new microwave circuits based on metamaterials to best meet the advanced requirements of modern wireless communication systems. The implementation and use of met-amaterial resonators is among the most widely used technical solutions to improve the electrical performance, and reduce the size of microwave devices and circuits such as antennas, couplers and filters. The proposed filter is based on the use of split-ring coupled square resonators; the realized circuit has been optimized in simulation using the electromagnetic solver HFSS. This filter is suitable for X-band applications with a bandwidth of 1200 MHz [10.5 GHz-13.4 GHz] with a total area of 24.54  4.84 mm 2 . The final circuit is mounted on a low cost FR4 substrate with a dielectric permittivity of 4.4 and a thickness of 1.6 mm. The originality of this filter is its selectivity in terms of bandwidth, having a wide band rejection and its easy integration with passive and active devices. Due to its straightforward construction, the suggested filter shows promising characteristics, for usage in wireless technologies for communications to offer an excellent performance.","PeriodicalId":16654,"journal":{"name":"Journal of Nano-and electronic Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68046175","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

Biodegradable Conductive Nerve Conduits Based on Carbon Apatite-Biopolymer Biomaterials: Synthesis and Properties 基于碳磷灰石-生物聚合物生物材料的可生物降解传导神经导管:合成与性能

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(3).03035

L. Sukhodub, M. Kumeda, L. Sukhodub

引用次数: 1

Reflection of Macroporous Silicon, Nanowires, and a Two-layer Structure of Silicon with an Effective Medium 大孔硅的反射、纳米线和有效介质下硅的两层结构

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(3).03026

V. Onyshchenko

{"title":"Reflection of Macroporous Silicon, Nanowires, and a Two-layer Structure of Silicon with an Effective Medium","authors":"V. Onyshchenko","doi":"10.21272/jnep.15(3).03026","DOIUrl":"https://doi.org/10.21272/jnep.15(3).03026","url":null,"abstract":"A theoretical model of reflection of macroporous silicon and arrays of silicon nanowires on a monocrys-talline substrate is presented. Macroporous silicon and silicon structured by nanowires are considered as a two-layer structure of silicon with an effective medium. The analytical model of the reflection from a two-layer silicon structure with an effective medium takes into account the absorption of light by the structure and the multiple reflections of light from the surfaces of the sample and the interface between the effective medium and the monocrystalline substrate. The reflection coefficient from a structured surface, which is the boundary between two media, contains the complex index of refraction of silicon. The effective index of refraction of the effective medium is found from the expression for mixing two media. The reflection of light falling on flat surfaces at different angles is calculated according to Fresnel's formulas. The frontal structured surface and the second structured surface were considered as Lambert surfaces. Total internal reflection from a flat surface between silicon and air is given by Snelius' law, and from structured surfaces between silicon and the effective medium and between the effective medium and air is accounted for by co-efficients. The reflection spectra from macroporous silicon and arrays of silicon nanowires on a monocrys-talline substrate are calculated according to analytically derived formulas. It is shown that the magnitude of reflection spectra from macroporous silicon and arrays of silicon nanowires on a monocrystalline substrate decreases when the volume fraction of pores increases. The reflectance begins to increase again when the pore volume fraction is high. Reflection from the surface between the effective medium and air is observed at a high volume fraction of pores.","PeriodicalId":16654,"journal":{"name":"Journal of Nano-and electronic Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68046477","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 Few-Layer Reduced Graphene Oxide Nanosheet by Modified Hummer's Method 改进Hummer法制备少层还原氧化石墨烯纳米片及其表征

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(2).02003

J. Singh, G. Joshi

引用次数: 0

Surface-Barrier CdTe Diodes for Photovoltaics 光电用表面势垒CdTe二极管

Journal of Nano-and electronic Physics Pub Date : 2023-01-01 DOI: 10.21272/jnep.15(2).02006

T. Mazur, M. Mazur, Mariana Halushchak

引用次数: 2