INVESTIGADORES
FASANO Yanina
artículos
Título:
Single-polarity high-voltage ampli er to drive coarse-approach slip-stick piezoelectric motors
Autor/es:
CRISTIAN BELUSSI; MARIANO GÓMEZ BERISSO; YANINA FASANO
Revista:
REVIEW OF SCIENTIFIC INSTRUMENTS
Editorial:
AMER INST PHYSICS
Referencias:
Lugar: New York; Año: 2013 vol. 84 p. 56104 - 56106
ISSN:
0034-6748
Resumen:
Scanning probe microscopies typically rely on coarse-approach slip-stick piezoelectric motors thatwork by exciting piezoelectric stacks with sawtooth signals of hundreds of V and some kHz. Forthis application, we introduce a single-polarity high-voltage amplifier based on discrete MOSFETtechnologycomponents with improved output current desirable for low-temperature actuation. Theamplifier has an output signal of 600 V, 100mA output current, noise level below 2 μV/√Hz, 4 kHzhigh-voltage bandwidth, 2 V/μs slew-rate, and rise and fall times of 80 μs (when loaded with 30 nF).The circuit was successfully applied to drive a home-made scanning tunnelling microscope.
