Title :
Optical piezoelectric transducer based nanoultrasonics
Author :
Sun, Chi-Kuang ; Lin, Kung-Hsuan ; Wen, Yu-Chieh ; Liu, Tzu-Ming ; Li, Pai-Chi ; Chyi, Jen-Inn
Author_Institution :
Grad. Inst. of Electro-Opt. Eng., Nat. Taiwan Univ., Taipei
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.
Keywords :
nanotechnology; optical sensors; piezoelectric transducers; ultrasonic transducers; THz nanoacoustic waves; acoustic wavelength; excitation optical wavelength; nanometer-scaled lateral spot size; nanoultrasonics; noninvasive subsurface ultrasonic imaging; optical field intensity; optical piezoelectric transducer; piezoelectric nanolayers; strain patterns; Acoustic imaging; Acoustic pulses; Acoustic waves; Biomedical optical imaging; Optical imaging; Optical sensors; Optimized production technology; Piezoelectric transducers; Ultrafast optics; Ultrasonic imaging; Nanoultrsonics; Piezoelectricity; nanoacoustics; nanotechnology;
Conference_Titel :
Nanotechnology, 2007. IEEE-NANO 2007. 7th IEEE Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-0607-4
Electronic_ISBN :
978-1-4244-0608-1
DOI :
10.1109/NANO.2007.4601185
