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Higher Symmetries and Its Application in Microwave Technology, Antennas and Metamaterials

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ISBN: 9783039218769 9783039218776 Year: Pages: 98 DOI: 10.3390/books978-3-03921-877-6 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-01-07 09:08:26
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Abstract

Artificial materials have been widely studied and used in photonics and microwaves in the last few decades. Recent research has proven that the introduction of specific higher symmetries in each cell of a periodic medium is an effective approach to obtain unprecedented exotic behaviors and to overcome the current limitations of these devices. For example, simple symmetries of a purely spatial type (glide or twist transformations) can have a huge impact on the properties of the resulting materials, thus defining wideband behaviors for flat lenses or large stop bands for novel EBG materials. This Special Issue opens with a novel discussion on the effect of time-reversal symmetries in antenna theory and presents new structures exploiting symmetries for antenna and microwave components, such as flat lenses, helix antennas, and gap-waveguides. Finally, new modeling methods are discussed for the study of wave propagation along glide surfaces and twist lines.

Novel Smart Textiles

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ISBN: 9783039285709 / 9783039285716 Year: Pages: 230 DOI: 10.3390/books978-3-03928-571-6 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Arts in general
Added to DOAB on : 2020-06-09 16:38:57
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The sensing, adapting, responding, multifunctionality, low energy, small size and weight, ease of forming, and low-cost attributes of smart textiles and their multidisciplinary scope offer numerous end uses in medical, sports and fitness, military, fashion, automotive, aerospace, the built environment, and energy industries. The research and development on these new and high-value materials cross scientific boundaries, redefine material science design and engineering, and enhance quality of life and our environment. “Novel Smart Textiles” is a focused Special Issue that reports the latest research of this field and facilitates dissemination, networking, discussion, and debate.

Keywords

e-textile --- metamaterials --- transmission line --- wearable --- split ring resonator --- dye-sensitized solar cell (DSSC) --- polyacrylonitrile (PAN) --- nanofiber mat --- electrospinning --- PEDOT:PSS --- dye-sensitized solar cell --- half-textile --- spectral analysis --- parameter identification --- equivalent circuit --- black-box --- grey-box --- power spectral density --- optimization --- analytical model --- electromagnetic shielding effectiveness --- electric properties --- fabric --- woven textiles --- carbon nanomaterials --- smart fabrics --- in-line monitoring --- polymeric composites --- carbon nanotubes --- reduced graphene oxide --- textile electrode --- ECG --- motion sensor --- skin-electrode impedance --- electrically conductive textiles --- polymers --- smart textiles --- surface area evaluation --- microencapsulation --- biofunctional --- drug-delivery --- textile-based stretch sensors --- stitch structure --- wearable stretch sensor --- conductive thread --- conductivity --- metal flake --- coating --- e-textile --- encapsulation --- durability --- stiffness --- textile/polymer composite --- stretchable electronics --- smart textiles --- mechanical and electrical properties --- quasi-static and cyclic mechanical loading --- life-time expectancy --- smart textile --- thermal textile pixel --- thermal communication --- non-auditory and nonvisual communication --- thermal conductivity --- Peltier element --- SMART pattern-changing fabric --- pattern effect --- visual response --- visual brain --- event-related potential (ERP) --- psychotextiles --- art and design --- smart textiles --- textile sensors --- e-textiles --- visual brain --- thermal textile pixels --- stretchable electronics --- conductive textiles --- wearables --- stitch-based sensors --- biofunctional textiles --- ECG --- hybrid electrodes --- motion tracking --- carbon nanotextiles --- composites --- EMS textiles --- electrospun solar cells --- embroidered e-textiles --- targeted delivery --- psychotextiles --- energy harvesting --- multifunctional

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