Optical piezoelectric transducer based nanoultrasonics
Journal
2007 7th IEEE International Conference on Nanotechnology - IEEE-NANO 2007, Proceedings
Pages
263-266
Date Issued
2007
Author(s)
Abstract
In this work, we review our recent development on nanoultrasonics based on an optical piezoelectric transducer. By embedding strain patterns in piezoelectric nano-layers and by manipulating optical field intensity in temporal and spatial domains, THz nanoacoustic waves with an acoustic wavelength on the order of or shorter than 10 nm can be generated with a nanometer-scaled lateral spot size, much smaller than the excitation optical wavelength. Noninvasive subsurface ultrasonic imaging can thus be realized with a nanometer resolution.
Type
conference paper