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

fYear

2007

fDate

2-5 Aug. 2007

Firstpage

263

Lastpage

266

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/NANO.2007.4601185

Filename

4601185