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Nanogenerators in Korea

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ISBN: 9783038976226 Year: Pages: 160 DOI: 10.3390/books978-3-03897-623-3 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-03-08 11:42:05
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Abstract

Fossil fuels leaded the 21st century industrial revolution but caused some critical problems such as exhaustion of resources and global warming. Also, current power plants require too much high cost and long time for establishment and facilities to provide electricity. Thus, developing new power production systems with environmental friendliness and low-cost is critical global needs. There are some emerging energy harvesting technologies such as thermoelectric, piezoelectric, and triboelectric nanogenerators, which have great advantages on eco-friendly low-cost materials, simple fabrication, and various operating sources. Since the introduction of various energy harvesting technologies, many novel designs and applications as power suppliers and physical sensors in the world have been demonstrated based on their unique advantages. In this Special Issue, we would like to address and share basic approaches, new designs, and industrial applications related to thermoelectric, piezoelectric, and triboelectric devices which are on-going in Korea. With this Special Issue, we aim to promote fundamental understanding and to find novel ways to achieve industrial product manufacturing for energy harvesters.

Ultrasonic Guided Waves

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ISBN: 9783039282982 9783039282999 Year: Pages: 376 DOI: 10.3390/books978-3-03928-299-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-04-07 23:07:09
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The propagation of ultrasonic guided waves in solids is an important area of scientific inquiry, primarily due to their practical applications for nondestructive characterization of materials, such as nondestructive inspection, quality assurance testing, structural health monitoring, and providing a material state awareness. This Special Issue of Applied Sciences covers all aspects of ultrasonic guided waves (e.g., phased array transducers, meta-materials to control wave propagation characteristics, scattering, attenuation, and signal processing techniques) from the perspective of modeling, simulation, laboratory experiments, or field testing. In order to fully utilize ultrasonic guided waves for these applications, it is necessary to have a firm grasp of their requisite characteristics, which include that they are multimodal, dispersive, and are comprised of unique displacement profiles through the thickness of the waveguide.

Keywords

electromagnetic wave --- group velocity --- time-frequency domain reflectometry --- dispersive medium --- ultrasonic guided wave --- nondestructive testing --- square steel bar --- non-detection zone --- surface flaw --- Rayleigh wave --- scattering --- modified BEM --- reconstruction --- adhesive joint --- single lap joint --- non-destructive testing --- damage identification --- Lamb waves --- scanning laser vibrometry --- signal processing --- ultrasonic guided waves --- axial transmission --- ultrasonic guided waves --- fiber optics --- fiber Bragg grating --- nondestructive testing --- structural health monitoring --- pipe inspection --- partial wave method --- slowness curves --- lamb wave --- stoneley wave --- mode sorting --- acoustic leakage --- rayleigh wave --- surface waves --- elastodynamics --- guided waves --- lamb wave --- dispersion curves --- phase velocity --- group velocity --- signal processing --- SH0 mode --- circumferential scanning --- synthetic aperture focusing --- exploding reflector model --- Lamb wave --- local wavenumber --- air-coupled transducer --- wavenumber domain filtering --- hybrid and non-contact system --- signal processing --- SNR --- split-spectrum processing --- ultrasonic guided waves --- signal processing --- defect detection --- spatial domain --- array analysis --- pipeline inspection --- ultrasonic guided waves (UGWs) --- metamaterial --- resonator --- low-frequency --- lamb wave --- adaptive filtering --- leaky normalized mean square --- ultrasonic guided waves --- pipeline inspection --- SNR enhancement --- signal processing --- guided wave --- multi-wire cable --- wave structure --- contact acoustic nonlinearity --- energy transfer --- rail --- ultrasonic guided wave --- semi-analytical finite element --- single mode extraction algorithm --- defect location --- signal processing --- defect detection --- torsional wave --- power spectrum --- sliding window --- pipeline inspection --- ultrasonic guided-waves (UGWs) --- magnetostrictive patch transducer --- shear mode --- soft magnetic patch --- dynamic magnetic field optimization --- signal strength enhancement --- acoustic emission --- nondestructive testing --- leakage location --- fault diagnosis --- n/a --- lamb waves --- composite --- ultrasonic testing --- numerical modelling --- pressure vessels

Design and Development of Nanostructured Thin Films

Authors: --- ---
ISBN: 9783039287383 / 9783039287390 Year: Pages: 386 DOI: 10.3390/books978-3-03928-739-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General)
Added to DOAB on : 2020-06-09 16:38:57
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Due to their unique size-dependent physicochemical properties, nanostructured thin films are used in a wide range of applications from smart coating and drug delivery to electrocatalysis and highly-sensitive sensors. Depending on the targeted application and the deposition technique, these materials have been designed and developed by tuning their atomic-molecular 2D- and/or 3D-aggregation, thickness, crystallinity, and porosity, having effects on their optical, mechanical, catalytic, and conductive properties. Several open questions remain about the impact of nanomaterial production and use on environment and health. Many efforts are currently being made not only to prevent nanotechnologies and nanomaterials from contributing to environmental pollution but also to design nanomaterials to support, control, and protect the environment. This Special Issue aims to cover the recent advances in designing nanostructured films focusing on environmental issues related to their fabrication processes (e.g., low power and low cost technologies, the use of environmentally friendly solvents), their precursors (e.g., waste-recycled, bio-based, biodegradable, and natural materials), their applications (e.g., controlled release of chemicals, mimicking of natural processes, and clean energy conversion and storage), and their use in monitoring environment pollution (e.g., sensors optically- or electrically-sensitive to pollutants)

Keywords

InAlN --- nanospiral --- metamaterial --- sputtering --- chirality --- microparticle deposition --- self-assembly --- homogeneity --- monomer synthesis --- mask --- hazardous organic solvents --- photonic nanostructures --- self-assembly --- polymer nanoparticles --- biomimetic solvent sensors --- iridescence --- mesoporous --- Al2O3 --- MgO --- poly(dimethylacrylamide) --- hydrogel --- thin film --- spin coating --- SEM --- FIB --- Kr physisorption --- hydrogenated amorphous carbon films --- metallic nanoparticles --- hybrid deposition system --- nanoscratch --- nanocomposites --- aqueous dispersion --- carbon nanotube --- graphene oxide --- ink --- rod coating --- electrical conductivity --- optical transmittance --- mechanical flexibility --- silk sericin --- agarose --- lysozyme --- composite gel --- wound dressing --- nanofiber --- lamination --- water filtration --- CdTe --- self-catalysed --- wires --- Mg alloy --- LDH --- corrosion --- deposition --- coating --- ReB2/TaN multilayers --- modulation structure --- first-principles calculation --- interfacial model --- adsorption energy --- interfacial energy --- biomaterial --- biomedical --- nanofibers --- scaffolds --- reinforced --- hybrid material --- thermal analysis --- nanofibrous membranes --- light trapping --- silicon thin film --- photovoltaics --- polystyrene sphere assisted lithography --- nanostructured back reflectors --- Raman scattering --- quantum confinement --- electron–phonon coupling --- polar semiconductors --- zinc oxide --- metal-organic framework --- microscopy --- thin films --- powders --- electrodeposition --- platinum --- highly oriented pyrolytic graphite --- 2D growth --- barrier material --- nanocoating of SiOx --- polymeric matrix --- plasma deposition --- PVD --- PA-PVD --- PECVD --- permeation --- CERAMIS® --- SorpTest --- iron oxides --- FeO --- Fe3O4 --- ultrathin films --- epitaxial growth --- platinum --- ruthenium --- symmetry --- LEEM --- LEED --- XPEEM --- electrodeposition --- platinum --- highly oriented pyrolytic graphite --- 2D growth --- thin films --- TiO2NPs --- AuNPs --- photocatalysis --- mercury vapors adsorbing layer --- PAS device --- iron oxides --- ultrathin films --- silver --- epitaxial growth --- structural characterization --- STM --- LEED --- XPS --- DFT --- model system --- Pt thin deposits --- galvanic displacement --- UPD --- SLRR --- electrocatalysis --- nanostructured films --- birefringence --- nanocrystalline cellulose --- Mueller matrix --- vanadium dioxide --- post-treatment --- plasma irradiation --- luminous transmittance --- phase transition performance --- electrospinning deposition --- chemosensor --- nanocomposite conductive polymers --- polyhydroxibutyrate --- polystyrene --- H2TPP --- VOCs selectivity --- mesoporous graphene --- thin film --- nanostructure --- CaxCoO2 --- sputtering --- phase transformation --- Ge surface engineering --- La2O3 passivation layer --- atomic layer deposition --- electrical properties

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english (2)

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2020 (2)

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