Ultrasonic surface-haptic touchscreens produce compelling tactile sensations directly on the users’ fingertips. The stem from modulation of friction produced by acoustic radiation pressure, which reduces contact between skin and glass plate. During this process, some vibrations are partly absorbed tissues, resulting in a conspicuous change vibration amplitude plate upon with finger, manifests a...

The change in the magnetic and acoustic properties of nickel as a result cold deformation subsequent annealing is investigated. It was found that leads to very significant changes nickel. coercive force decreases 50 times with an increase temperature 800 °C. Rayleigh coefficient, which characterizes mobility domain walls, monotonically increases by factor 20 over entire investigated range tempe...

The effect of misaligned mechanical stresses on the excitation ultrasonic vibrations by focused laser radiation near a small-diameter hole in aluminum alloy is investigated. analysis behavior signal at various mutual angles and values two uniaxial carried out. It shown that certain under action stresses, not only contrast ultrasound images changes, but also their rotation as whole relative to c...