Abstract: A solid lubricant magnetron sputtering physical vapor deposition (MS PVD) coating can be used e.g. in automotive, aircraft and space industries for increasing lifetime of moving parts such as bearings, chains, pistons and joints that experience sliding or rolling friction. A nanocomposite solid lubricant coating contains a carbon matrix with copper grains and at least one of Ti, Zr, Hf, and V, in bulk proportions, at. %: carbon ?5-35; copper 50-90; additional metal ?5-15. The carbon matrix with copper grains is reinforced with interlayers of the additional metal. The thickness of each layer of the carbon matrix with copper grains is in the range between 30 and 150 nanometers and the thickness of each interlayer of the additional metal is in the range between 5 and 20 nanometers. The hardness of said coating is in the range between 200 and 1000 HV.

Abstract: A solid lubricant magnetron sputtering physical vapor deposition (MS PVD) coating can be used e.g. in automotive, aircraft and space industries for increasing lifetime of moving parts such as bearings, chains, pistons and joints that experience sliding or rolling friction. A nanocomposite solid lubricant coating contains a carbon matrix with copper grains and at least one of Ti, Zr, Hf, and V, in bulk proportions, at. %: carbon ?5-35; copper 50-90; additional metal ?5-15. The carbon matrix with copper grains is reinforced with interlayers of the additional metal. The thickness of each layer of the carbon matrix with copper grains is in the range between 30 and 150 nanometers and the thickness of each interlayer of the additional metal is in the range between 5 and 20 nanometers. The hardness of said coating is in the range between 200 and 1000 HV.

Abstract: A vibrational gyroscope includes a piezoelectric ring having a central opening, and a hemispherical resonator having a central opening and mounted over the opening of the central opening of the piezoelectric ring. A plurality of electrodes delivers a voltage to the piezoelectric ring. A plurality of electrodes provides signal readout that corresponds to angular velocity. The hemispherical resonator can be glued to the piezoelectric ring. The hemispherical resonator preferably vibrates in the third vibration mode. A plurality of capacitive electrodes can be located at nodes and at antinodes of the vibration of the hemispherical resonator, and provide a signal readout that corresponds to the angular velocity. The piezoelectric ring is segmented, non-segmented, or includes an outer segmented portion and an inner non-segmented portion.

Abstract: A vibrational gyroscope includes a piezoelectric ring having a central opening, and a hemispherical resonator having a central opening and mounted over the opening of the central opening of the piezoelectric ring. A plurality of electrodes delivers a voltage to the piezoelectric ring. A plurality of electrodes provides signal readout that corresponds to angular velocity. The hemispherical resonator can be glued to the piezoelectric ring. The hemispherical resonator preferably vibrates in the third vibration mode. A plurality of capacitive electrodes can be located at nodes and at antinodes of the vibration of the hemispherical resonator, and provide a signal readout that corresponds to the angular velocity. The piezoelectric ring is segmented, non-segmented, or includes an outer segmented portion and an inner non-segmented portion.

Abstract: A gyroscope includes a substantially cylindrical resonator mounted in a housing, and a bottom plate attached to the resonator. A plurality of openings are arranged circumferentially and equiangularly on the bottom plate. A plurality of piezoelectric elements arranged between the openings on the bottom plate. The number of openings can be anywhere between 2 and 16, with eight openings preferred, with a corresponding number of piezoelectric elements. Preferably, substantially the entire available area of the bottom plate is taken up by the piezoelectric elements. The piezoelectric elements can be inside or outside the resonator.

Abstract: A gyroscope includes a substantially cylindrical resonator mounted in a housing, and a bottom plate attached to the resonator. A plurality of openings are arranged circumferentially and equiangularly on the bottom plate. A plurality of piezoelectric elements arranged between the openings on the bottom plate. The number of openings can be anywhere between 2 and 16, with eight openings preferred, with a corresponding number of piezoelectric elements. Preferably, substantially the entire available area of the bottom plate is taken up by the piezoelectric elements. The piezoelectric elements can be inside or outside the resonator.

Abstract: A vibrational gyroscope includes a piezoelectric ring having a central opening, and a hemispherical resonator having a central opening and mounted over the opening of the central opening of the piezoelectric ring. A plurality of electrodes delivers a voltage to the piezoelectric ring. A plurality of electrodes provides signal readout that corresponds to angular velocity. The hemispherical resonator can be glued to the piezoelectric ring. The hemispherical resonator preferably vibrates in the third vibration mode. A plurality of capacitive electrodes can be located at nodes and at antinodes of the vibration of the hemispherical resonator, and provide a signal readout that corresponds to the angular velocity. The piezoelectric ring is segmented, non-segmented, or includes an outer segmented portion and an inner non-segmented portion.

Abstract: A gyroscope includes a substantially cylindrical resonator mounted in a housing, and a bottom plate attached to the resonator. A plurality of openings are arranged circumferentially and equiangularly on the bottom plate. A plurality of piezoelectric elements arranged between the openings on the bottom plate. The number of openings can be anywhere between 2 and 16, with eight openings preferred, with a corresponding number of piezoelectric elements. Preferably, substantially the entire available area of the bottom plate is taken up by the piezoelectric elements. The piezoelectric elements can be inside or outside the resonator.

Abstract: A gyroscope includes a substantially cylindrical resonator mounted in a housing, and a bottom plate attached to the resonator. A plurality of openings are arranged circumferentially and equiangularly on the bottom plate. A plurality of piezoelectric elements arranged between the openings on the bottom plate. The number of openings can be anywhere between 2 and 16, with eight openings preferred, with a corresponding number of piezoelectric elements. Preferably, substantially the entire available area of the bottom plate is taken up by the piezoelectric elements. The piezoelectric elements can be inside or outside the resonator.