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Information × Registration Number 0215U004087, 0114U003450 , R & D reports Title New nanocomposite materials for space sensors (accelerometers, gravimeters, pressure sensors, ets.) popup.stage_title Head Klymenko Yuriy, Registration Date 05-02-2015 Organization Space Research Institute NASU and NSAU popup.description2 A series of laboratory experiments on the influence of external mechanical efforts to elastic deformation and electrical conductive of nanocomposites containing different carbon and metallic impurities is carried out. A nanocomposite elastic material, which is characterized by persistent electric and electric deformation response to the action of external mechanical effort is designed and created. For various types of conductive nanocomposites, a correlation between material mechanical stress and electric current has been studied. Experimental measurements have been made in regime of sample compression by a cyclic method. The cycles have been repeated many times. By analyzing the relationship between these characteristics, it is found silicone-based materials with metallic impurities, where there is almost a linear relationship between strain and current as function of the external load. After irradiation of an array of multiwalled carbon nanotubes (CNT) by high-energy electrons, it was obtained the compact samples (fragments) with a diameter of 1-2 mm, which differ significantly in electromechanical and electrical properties and defects from conventional unirradiated CNT. This is due to partly bridged (covalent) bonds between adjacent nanotubes, which enable to reduce the contribution of inelastic processes (reduced hysteresis) in electrical conductivity for the compression regime of loading/unloading. Significant heat of the CNT array was observed under laser irradiation, resulting in a change in electrical conductivity without rising inelastic processes. Product Description popup.authors Клименко Юрій Олександрович Левченко Володимир Володимирович Мамуня Євгеній Петрович Нищенко Михайло Маркович Порошин Володимир Миколайович Пруцко Юлія Вячеславівна Семенів Олег Володимирович popup.nrat_date 2020-04-02 Close