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"Now in its Third Edition, Fundamentals of Optical Waveguides continues to be an essential resource for any researcher, professional or student involved in optics and communications engineering. Any reader interested in designing or actively working with optical devices must have a firm grasp of the principles of lightwave propagation. Katsunari Okamoto continues to present this difficult technology clearly and concisely with several illustrations and equations. Optical theory encompassed in this reference includes coupled mode theory, nonlinear optical effects, finite element method, beam propagation method, staircase concatenation method, along with several central theorems and formulas. Silicon photonics devices such as coupled resonator optical waveguides (CROW), lattice-form filters, and AWGs are also fully described."--

Fiber optics. --- Fiberoptics --- Fibre optics --- Fibreoptics --- Optics, Fiber --- Integrated optics --- Optoelectronic devices --- Photonics --- Optical fiber communication --- Optical wave guides.

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In recent years, the development of biopolymers based on constituents obtained from natural resources has been gaining considerable attention. The utilization of biopolymers to engineer advanced bionanocomposites and hybrid materials is the focus of increasing scientific activity, explained by growing environmental concerns and interest in the novel features and multiple functionalities of these macromolecules.In this Special Issue, we aim to present the current state of the art in research pertaining to biopolymer-based bionanocomposites and hybrid materials, and their advanced applications. Contributions on the processing of biopolymers and bionanocomposites, the use of diverse biopolymer sources such as polysaccharides, the reinforcement of nanosized materials with biopolymers, and applications of these biopolymers, bionanocomposites, and biohybrid materials will constitute the backbone of this Special Issue.

Technology: general issues --- History of engineering & technology --- 3D printing --- 4D printing --- additive manufacturing --- biocomposite --- industry revolution --- polymer --- polycaprolactone --- green biocomposites --- hybrid biocomposites --- mechanical properties --- thermal properties --- natural fiber --- polylactic acid --- polylactic acid blends --- polylactic acid composites --- arrowroot fibers --- arrowroot starch --- plasticizer --- physical properties --- morphological properties --- Cymbopogan citratus fibre --- starch --- natural fibre --- biodegradation --- chitosan --- chitosan blends --- chitosan nanocomposites --- cellulose --- nanocellulose --- bamboo fibers --- hybrid --- composites --- thermoplastic --- thermoset --- mechanical --- thermal --- cellulose nanocrystals --- liquid crystals --- biomimetic --- corn starch --- kenaf fibre --- tensile properties --- water barrier properties --- rubber-based membrane --- filler --- adsorbent --- ENR/PVC --- thermoplastic elastomer --- wastewater treatment --- woven kenaf --- woven polyester --- DMA --- flammability --- Cymbopogan citratus fiber --- palm wax --- alkali treatment --- n/a

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Objet de recherche que se partagent aujourd'hui tant les designers, ingénieurs, agronomes que les chercheurs en sciences humaines et sociales, tant les établissements d'enseignement que les collectivités locales, associations et professionnels d'une filière, le chanvre est ici approché dans sa capacité actuelle et son potentiel à être demain - matière à transitions. Pour ce faire, cet ouvrage va à la rencontre des acteurs économiques qui manipulent le chanvre et travaillent à sa valorisation, à l'état de plante, puis de matière transformée et enfin de consommable. Il interroge des chercheurs qui étudient une part spécifique de ses caractéristiques et champs d'application. Il donne à voir la manière dont des étudiants en design de l'École supérieure d'art et de design de Reims s'emparent de la matière pour la faire devenir objet, en concevant au préalable des outils et supports qui révèlent tout un écosystème comme base de compréhension. De manière plus générale, par l'intermédiaire du chanvre, cet ouvrage contribue à penser les enjeux de la transition à venir, tant du point de vue économique et social, que politique et environnemental.

Chanvre --- Industrie et commerce --- Hemp industry --- Hemp --- Environmental aspects --- Design --- Industrial applications --- Industrie --- Aspect environnemental --- Applications industrielles --- Environmental aspects. --- Design. --- Industrial applications. --- Isolation thermique --- Matériau écologique --- Béton de fibre --- Empreinte écologique --- Transition écologique

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This book gives an overview on mid-infrared optical glass and fibers laser, it cover the underlying principle, historic background, as well as recent advances in materials processing and enhanced properties for rare earth doped luminescence, spectroscopy lasers, or optical nonlinearity applications. It describes in great detail, the preparation of high purity non-oxide IR glass and fibers to be used as mid-IR fiber laser and supercontinuum sources for optical fiber spectroscopy. It will be useful for academics, researchers and engineers in various disciplines who require a broad introduction to the subject and would like to learn more about the state-of-the-art and upcoming trends in mid-infrared fiber source development, particularly for industrial, medical and military applications.

Optical fibers --- Optical glass. --- Optical materials. --- Fiber optics. --- Photonics. --- New optics --- Optics --- Fiberoptics --- Fibre optics --- Fibreoptics --- Optics, Fiber --- Integrated optics --- Optoelectronic devices --- Photonics --- Optical fiber communication --- Materials --- Glass, Optical --- Glass --- Optical materials --- Light guides (Optical fibers) --- Fiber optics --- Fibers --- Optical wave guides

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Additive manufacturing technology offers the ability to produce personalized products with lower development costs, shorter lead times, less energy consumed during manufacturing and less material waste. It can be used to manufacture complex parts and enables manufacturers to reduce their inventory, make products on-demand, create smaller and localized manufacturing environments, and even reduce supply chains. Additive manufacturing (AM), also known as fabricating three-dimensional (3D) and four-dimensional (4D) components, refers to processes that allow for the direct fabrication of physical products from computer-aided design (CAD) models through the repetitious deposition of material layers. Compared with traditional manufacturing processes, AM allows the production of customized parts from bio- and synthetic polymers without the need for molds or machining typical for conventional formative and subtractive fabrication.In this Special Issue, we aimed to capture the cutting-edge state-of-the-art research pertaining to advancing the additive manufacturing of polymeric materials. The topic themes include advanced polymeric material development, processing parameter optimization, characterization techniques, structure–property relationships, process modelling, etc., specifically for AM.

polylactic acid (PLA) --- natural fibres --- biocomposite --- mechanical properties --- thermoplastic starch --- biopolymer --- composite --- food packaging --- pitch --- polyethylene --- carbon fibres --- extrusion --- blend --- antimicrobial --- antibacterial --- 3D printing --- fused filament fabrication --- composite material --- fused-filament fabrication --- mechanical strength --- naked mole-rat algorithm --- optimization --- process parameters --- bio-based polyethylene composite --- X-ray tomography --- CNT --- MWCNT --- non-covalent functionalisation --- polythiophene --- P3HT --- reaction time --- natural fiber composite --- product design --- sustainability design --- design process --- epoxidized jatropha oil --- shape memory polymer --- bio-based polymer --- jatropha oil --- ABS --- fatigue --- thermo-mechanical loads --- building orientation --- nozzle size --- layer thickness --- drug delivery --- biodegradable polymers --- polymeric scaffolds --- natural bioactive polymers --- antimicrobial properties --- anticancer activity --- tissue engineering --- lattice material --- flexible TPU --- internal architecture --- minimum ignition temperature of dispersed dust --- dust explosion --- dust cloud --- polyamide 12 --- additive technologies --- kenaf fibre --- fibre treatment --- thermal properties --- Fused Deposition Modelling (FDM) --- silver nanopowder --- kenaf --- high-density polyethylene