PREPARATION PROCESS OF THE METAMATERIAL WITH NEGATIVE INDEX OF REFRACTION

There is a preparation process of the metamaterial with a negative index of refraction, especially the lefthanded composite system (ceramic) built from iron and boron nitride Fe:BN with a negative refractive index associated with negative values of the magnetic −μ and dielectric −£ permeability. Met...

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Bibliographische Detailangaben
Hauptverfasser:	STREK, WIESLAW, OGANISIAN, KAREN, VOGT, ANDRZEJ, GLUCHOWSKI, PAWEL
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS ARTIFICIAL STONE BASIC ELECTRIC ELEMENTS CASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ELECTRICITY FERROUS OR NON-FERROUS ALLOYS INDUCTANCES LIME, MAGNESIA MAGNETS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METALLURGY PERFORMING OPERATIONS POWDER METALLURGY REFRACTORIES SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES SLAG TRANSFORMERS TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OF NATURAL STONE WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	There is a preparation process of the metamaterial with a negative index of refraction, especially the lefthanded composite system (ceramic) built from iron and boron nitride Fe:BN with a negative refractive index associated with negative values of the magnetic −μ and dielectric −£ permeability. Method of preparation of the Fe:BN ceramic includes mixing Fe nano or micro particles (synthesized from iron pentacarbonyl Fe(CO)s) with hexagonal boron nitride (h-BN), grinding the powders, compacting the powder in form of pellets at room temperature and low pressure, placing a pellet in a container (CaCO3) with graphite heater, and sintering the pellet from ambient pressure to 8 GPa and temperature from room temperature to 2000 degrees C. The iron or iron based powder particles are evenly distributed in h-BN media and form core-shell structure, where the core includes iron or iron based particles and the shell includes an h-BN layer.