Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title]最新文献

Dyadic Green’s Function for Multilayered Planar, Cylindrical, and Spherical Structures with Impedance Boundary Condition 具有阻抗边界条件的多层平面、圆柱和球面结构的并矢格林函数

Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title] Pub Date : 2021-12-02 DOI: 10.5772/intechopen.95834

Shiva Hayati Raad, Z. Atlasbaf

{"title":"Dyadic Green’s Function for Multilayered Planar, Cylindrical, and Spherical Structures with Impedance Boundary Condition","authors":"Shiva Hayati Raad, Z. Atlasbaf","doi":"10.5772/intechopen.95834","DOIUrl":"https://doi.org/10.5772/intechopen.95834","url":null,"abstract":"The integral equation (IE) method is one of the efficient approaches for solving electromagnetic problems, where dyadic Green’s function (DGF) plays an important role as the Kernel of the integrals. In general, a layered medium with planar, cylindrical, or spherical geometry can be used to model different biomedical media such as human skin, body, or head. Therefore, in this chapter, different approaches for the derivation of Green’s function for these structures will be introduced. Due to the recent great interest in two-dimensional (2D) materials, the chapter will also discuss the generalization of the technique to the same structures with interfaces made of isotropic and anisotropic surface impedances. To this end, general formulas for the dyadic Green’s function of the aforementioned structures are extracted based on the scattering superposition method by considering field and source points in the arbitrary locations. Apparently, by setting the surface conductivity of the interfaces equal to zero, the formulations will turn into the associated problem with dielectric boundaries. This section will also aid in the design of various biomedical devices such as sensors, cloaks, and spectrometers, with improved functionality. Finally, the Purcell factor of a dipole emitter in the presence of the layered structures will be discussed as another biomedical application of the formulation.","PeriodicalId":190226,"journal":{"name":"Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title]","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124201863","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

Physics of Absorption and generation of Electromagnetic Radiation 电磁辐射吸收与产生的物理学

Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title] Pub Date : 2021-08-20 DOI: 10.5772/intechopen.99037

Sukhmander Singh, Ashish Tyagi, Bhavna Vidhani

{"title":"Physics of Absorption and generation of Electromagnetic Radiation","authors":"Sukhmander Singh, Ashish Tyagi, Bhavna Vidhani","doi":"10.5772/intechopen.99037","DOIUrl":"https://doi.org/10.5772/intechopen.99037","url":null,"abstract":"The chapter is divided into two parts. In the first part, the chapter discusses the theory of propagation of electromagnetic waves in different media with the help of Maxwell’s equations of electromagnetic fields. The electromagnetic waves with low frequency are suitable for the communication in sea water and are illustrated with numerical examples. The underwater communication have been used for the oil (gas) field monitoring, underwater vehicles, coastline protection, oceanographic data collection, etc. The mathematical expression of penetration depth of electromagnetic waves is derived. The significance of penetration depth (skin depth) and loss angle are clarified with numerical examples. The interaction of electromagnetic waves with human tissue is also discussed. When an electric field is applied to a dielectric, the material takes a finite amount of time to polarize. The imaginary part of the permittivity is corresponds to the absorption length of radiation inside biological tissue. In the second part of the chapter, it has been shown that a high frequency wave can be generated through plasma under the presence of electron beam. The electron beam affects the oscillations of plasma and triggers the instability called as electron beam instability. In this section, we use magnetohydrodynamics theory to obtain the modified dispersion relation under the presence of electron beam with the help of the Poisson’s equation. The high frequency instability in plasma grow with the magnetic field, wave length, collision frequency and the beam density. The growth rate linearly increases with collision frequency of electrons but it is decreases with the drift velocity of electrons. The real frequency of the instability increases with magnetic field, azimuthal wave number and beam density. The real frequency is almost independent with the collision frequency of the electrons.","PeriodicalId":190226,"journal":{"name":"Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title]","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123956684","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

Averaged No-Regret Control for an Electromagnetic Wave Equation Depending upon a Parameter with Incomplete Initial Conditions 具有不完全初始条件参数的电磁波方程的平均无遗憾控制

Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title] Pub Date : 2021-03-11 DOI: 10.5772/INTECHOPEN.95447

Abdelhak Hafdallah, Mouna Abdelli

引用次数: 0

RFID Applications in Retail RFID在零售业中的应用

Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title] Pub Date : 2021-01-19 DOI: 10.5772/INTECHOPEN.95787

Narges Kasiri

引用次数: 0

Tradition and Innovation in the Internationalization of Family Business: A Case Study from the Italian Fashion Industry 家族企业国际化的传统与创新——以意大利时装业为例

Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title] Pub Date : 2020-12-03 DOI: 10.5772/intechopen.94947

A. Pellicelli, E. Varese

{"title":"Tradition and Innovation in the Internationalization of Family Business: A Case Study from the Italian Fashion Industry","authors":"A. Pellicelli, E. Varese","doi":"10.5772/intechopen.94947","DOIUrl":"https://doi.org/10.5772/intechopen.94947","url":null,"abstract":"The fashion industry is one of the main businesses in the global economy in terms of employment, investment, trade and revenue, and Italian companies are recognized worldwide as representative of cultural heritage, expertise and high-quality standards. The adoption of traceability technologies, such as Radio Frequency Identification (RFId), from the very early stage of the production chain, may help to obtain a more effective process as well as assure the origin of garments, a key aspect in the fashion industry. This chapter presents a case study of Oscalito, an Italian family business that has adopted RFId technology, joining tradition and innovation in its production. We adopt a qualitative case study methodology to explore this experience within its context. Oscalito applies RFId tags to each garment label to ensure complete traceability throughout the production chain for every single item (and not merely by lots), fine-tuned control over the production process, and timely and accurate shipment. Thanks to the application of RFId tags, the production chain is monitored and the Italian origin of the garments is guaranteed. This research has undoubtedly some limitations due to the applied method. Deeper studies are needed in order to check general fashion industry trends regarding the application of RFId technology.","PeriodicalId":190226,"journal":{"name":"Electromagnetic Wave Propagation for Industry and Biomedical Applications [Working Title]","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129310549","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