Microfluidic particle manipulation using high frequency surface acoustic waves (Conference Presentation)

2017 ◽  
Author(s):  
Ye Ai
Keyword(s):  
Acoustic Waves ◽  
High Frequency ◽  
Surface Acoustic Waves ◽  
Particle Manipulation

A low-power droplet manipulator employing high-frequency surface acoustic waves

2009 ◽  
Vol 92 (4) ◽  
pp. 49-55
Author(s):  
Tsutomu Sasaki ◽  
Yasutomo Tanaka ◽  
Tatsuya Omori ◽  
Ken-Ya Hashimoto ◽  
Masatsune Yamaguchi
Keyword(s):  
Low Power ◽  
Acoustic Waves ◽  
High Frequency ◽  
Surface Acoustic Waves

Generating Near-THz Surface Acoustic Waves Using Picosecond Ultrasonics

2009 ◽  
Author(s):  
J. H. Lee ◽  
J. S. Sadhu ◽  
S. Sinha
Keyword(s):  
Rise Time ◽  
Acoustic Waves ◽  
High Frequency ◽  
Short Pulse ◽  
Surface Acoustic Waves ◽  
Grating Period ◽  
Critical Parameters ◽  
Generation Process ◽  
Short Pulse Laser ◽  
Substrate Properties

We present here a technique to generate high frequency SAW in non-piezoelectric substrate with nanostructure grating of period less than 100 nm fabricated on it. A short pulse laser (with rise time less than 100fs) incident on this structure creates a periodic thermal stress due to the differential absorption in the substrate and the grating. We show that this stress sets up a surface acoustic wave on the substrate that can be detected optically. Modeling the generation process and analysis of SAW spectrum reveals the critical parameters to be controlled for obtaining SAW of high frequency. We show that the grating period less than 50 nm, a laser pulse of rise time less than 100fs and substrate properties like high optical absorption and high Rayleigh velocity are necessary for generating surface acoustic waves in near-THz range. This work provides quantitative guidelines on the design of near THz phononics.

4A-1 Low-Power Droplet Manipulation Employing High-Frequency Surface Acoustic Waves

2006 ◽  
Author(s):  
K. Uehara ◽  
T. Sasaki ◽  
Y. Tanaka ◽  
K.-y. Hashimoto ◽  
T. Omori ◽  
...  
Keyword(s):  
Low Power ◽  
Acoustic Waves ◽  
High Frequency ◽  
Surface Acoustic Waves ◽  
Droplet Manipulation

Excitation of high frequency surface acoustic waves by phase velocity scanning of a laser interference fringe

1993 ◽  
Vol 62 (17) ◽  
pp. 2036-2038 ◽  
Author(s):  
Hideo Nishino ◽  
Yusuke Tsukahara ◽  
Yoshihiko Nagata ◽  
Toshio Koda ◽  
Kazushi Yamanaka
Keyword(s):  
Phase Velocity ◽  
Acoustic Waves ◽  
High Frequency ◽  
Interference Fringe ◽  
Surface Acoustic Waves ◽  
Laser Interference

scholarly journals Spatial-temporally resolved high-frequency surface acoustic waves on silicon investigated by femtosecond spectroscopy

2012 ◽  
Vol 101 (1) ◽  
pp. 013108 ◽  
Author(s):  
Martin Schubert ◽  
Martin Grossmann ◽  
Oliver Ristow ◽  
Mike Hettich ◽  
Axel Bruchhausen ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
High Frequency ◽  
Surface Acoustic Waves ◽  
Femtosecond Spectroscopy
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