Optical properties of metal island films (MIFs) can be combined with interference of dielectric coatings. A set of multilayer designs containing metal clusters reflecting different colours from front and back side of the coating was obtained by numerical optimization. The chosen designs presenting the range of feasible colours were deposited by electron beam evaporation. Spectrophotometric and ellipsometric measurements verified that the produced coatings present an excellent agreement with the optical performance calculated from the designs. Numerical optimization was verified as a useful method in designing of coatings containing MIFs. This approach can ease the implementation of metal clusters into multilayer designs and broaden the applications of MIFs.
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http://dx.doi.org/10.1364/OE.19.025521 | DOI Listing |
Sci Rep
December 2024
Institute of Radiation Emergency Medicine, Hirosaki University, 66-1 Hon-cho, Hirosaki, 036-8564, Aomori, Japan.
Radon (Rn) and thoron (Rn) were reported as the highest contributors to natural radiation received by humans. Furthermore, radon has been stated as the second-highest cause of lung cancer. The concentrations of U and Th (the parent nuclide of radon and thoron, respectively) in nature vary with geological conditions and can be enhanced by human activities.
View Article and Find Full Text PDFVet Res Commun
December 2024
Istituto Zooprofilattico Sperimentale della Sicilia, via Gino Marinuzzi 3, Palermo, 90129, Italy.
Heavy metals and metalloids are increasingly recognised as a threat to avian health, especially in species at the top of the food chain such as vultures. Griffon Vultures (Gyps fulvus) are ideal bioindicators for studying environmental contamination due to their scavenging habits and territorial behavior. In this study, we analysed the concentrations of six trace elements (Cd, Pb, Cr, Sb, Ni, and Cu) in feathers, pectoral plumage, and blood samples of Griffon Vultures from a captive environment in Sicily, Southern Italy, using an ICP-MS method.
View Article and Find Full Text PDFJ Xenobiot
November 2024
Grupo de Investigación en Toxicología Ambiental y Seguridad de los Alimentos y Medicamentos, Universidad de La Laguna, 38071 La Laguna, Canary Islands, Spain.
The increasing consumption of chia seeds is followed by a growing interest in their nutritional and toxicological characterization. To assess the characterization of the essential and PTEs of this novel food, 20 samples of conventional and organic chia seeds available on the European market were analyzed using ICP-OES. Then, the dietary exposure to these elements was assessed.
View Article and Find Full Text PDFEnviron Monit Assess
December 2024
Division of Sustainable Resources Engineering, Faculty of Engineering, Hokkaido University, Sapporo, 060-8628, Japan.
The extraction of mineral deposits is often associated with the occurrence of acid mine drainage (AMD), which can persist even after mine closure due to remaining sulfide minerals. This study investigates a 200-year-old abandoned mine and its impacts on nearby water resources. The study area is well known for Kuroko ore deposits located upstream of spring and river water resources.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2024
Northeast Normal University, Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Institute of Functional Material Chemistry, Local United Engineering Lab for Power Battery, CHINA.
Construction of metal-organic cages (MOCs) with internal modifications is a promising avenue to build enzyme-like cavities and unlocking the mystery of highly catalytic activity and selectivity of enzymes. However, current interests are mainly focused on single-metal-node cages, little achievement has been expended to metalloclusters-based architectures, and the in situ endogenous generation of metal clusters. Herein, based on the hard-soft-acids-bases (HSAB), the metalloclusters-based heterometallic MOC (Cu3VMOP) constructed of [Cu3OPz3]+ and [V6O6(OCH3)9(SO4)(CO2)3]2- clusters was obtained by one-pot method.
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