Electromechanical resonances and field-emission-induced self-oscillations of single crystal diamond needles

Due to its outstanding mechanical characteristics, diamond is an ideal material for use in micro- and nano-electromechanical systems. In this paper, we report on the investigation of vibrational properties singly clamped needlelike microcrystallites with nanoscale tips. The single-crystal needles were produced by selective oxidation polycrystalline films grown using chemical vapor deposition. study resonant oscillations driven AC voltage indicated that elastic modulus such close bulk single crystal diamond. A self-oscillation regime induced DC during field emission from apex a needle also demonstrated. It shown can be used efficient DC–AC conversion microdevices. high structural quality needles, their remarkable properties, relative ease mass fabrication make them promising candidates application various electromechanical systems, field-emission devices, scanning probe techniques.