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Microwave imaging techniques allow for the development of systems that are able to inspect, identify, and characterize in a noninvasive fashion under different scenarios, ranging from biomedical to subsurface diagnostics as well as from surveillance and security applications to nondestructive evaluation. Such great opportunities, though, are actually severely limited by difficulties arising from the solution of the underlying inverse scattering problem. As a result, ongoing research efforts in this area are devoted to developing inversion strategies and experimental apparatus so that they are as reliable and accurate as possible with respect to reconstruction capabilities and resolution performance, respectively. The intent of this Special Issue is to present the experiences of leading scientists in the electromagnetic inverse scattering community, as well as to serve as an assessment tool for people who are new to the area of microwave imaging and electromagnetic inverse scattering problems.
joint sparsity --- magnetic resonance imaging --- near-field measurements --- rank minimization --- compressed sensing --- array diagnosis --- microwave plasma diagnostics --- radar-based breast imaging --- image-based approach --- contraction integral equation for inversion (CIE-I) --- nonlinear optimization --- contrast-source inversion --- electromagnetic inverse scattering problems --- nonlinear problem --- tomography --- RCS estimation --- inverse problems --- discontinuous Galerkin method (DGM) --- microwave imaging profilometry --- electrical-property tomography --- breast imaging --- antenna array --- finite-difference methods --- adjoint inversion methods --- Bayesian compressive sensing (BCS) --- orthogonality sampling method --- inverse scattering --- linear sampling method --- breast cancer --- contrast source inversion (CSI) --- imaging --- electromagnetic inverse scattering --- antenna testing --- stopping criteria --- 3D --- microwave imaging --- Kolmogorov-Smirnov (K-S) test --- inverse obstacles problem --- 5G communication --- inverse source problem
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This book, a collection of 12 original contributions and 4 reviews, provides a selection of the most recent advances in the preparation, characterization, and applications of polymeric nanocomposites comprising nanoparticles. The concept of nanoparticle-reinforced polymers came about three decades ago, following the outstanding discovery of fullerenes and carbon nanotubes. One of the main ideas behind this approach is to improve the matrix mechanical performance. The nanoparticles exhibit higher specific surface area, surface energy, and density compared to microparticles and, hence, lower nanofiller concentrations are needed to attain properties comparable to, or even better than, those obtained by conventional microfiller loadings, which facilitates processing and minimizes the increase in composite weight. The addition of nanoparticles into different polymer matrices opens up an important research area in the field of composite materials. Moreover, many different types of inorganic nanoparticles, such as quantum dots, metal oxides, and ceramic and metallic nanoparticles, have been incorporated into polymers for their application in a wide range of fields, ranging from medicine to photovoltaics, packaging, and structural applications.
graphene oxide --- n/a --- latex compounding method --- gold nanoparticles --- ratiometric temperature sensing --- catalysis --- conjugated polymer nanoparticles --- carrier transport --- polymer-NP interface --- nanocomposites --- polyethylene --- structure-property relationship --- chemical and physical interface --- SiO2/TiO2 nanocomposite --- nanoparticles --- separation --- conductive polymer --- clays --- organic light-emitting diodes (OLEDs) --- nanocomposite --- molecular chain motion --- nanosheets --- morphology --- metal oxides --- hybrid hydrogels --- gas barrier properties --- nanomaterials --- in situ synthesis --- mechanical properties --- power cable insulation --- inorganic nanotubes --- surface modification of silica --- optoelectronic properties --- layered structures --- sol–gel --- nano-hybrids --- fluorescent assay --- N-isopropylacrylamide --- bismaleimide --- electrical property --- solar cell --- N-isopropylmethacrylamide --- SiO2 microspheres --- PFO/MEH-PPV hybrids --- power-conversion efficiency --- in-situ synthesis --- electrical breakdown --- active layer --- crystallization kinetics --- polypropylene nanocomposite --- electric energy storage --- silver ions --- composite membrane --- carbon nanoparticles --- graphene --- composites --- electrode --- reduced graphene oxide --- selective adsorption --- thermoresponsive hyperbranched polymer --- colorimetric sensor --- FRET --- polymers --- graphene-like WS2 --- polymer-matrix composites --- thermoplastic nanocomposite --- fluorescence resonance energy transfer --- PHBV --- melamine --- Ag nanoparticles --- adhesion --- chain topology --- interfacial layer --- silica/NR composite --- sol-gel
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