Selective particle and cell capture in a continuous flow using micro-vortex acoustic streaming

Lab on a Chip ◽  
2017 ◽  
Vol 17 (10) ◽  
pp. 1769-1777 ◽  
Author(s):  
David J. Collins ◽  
Bee Luan Khoo ◽  
Zhichao Ma ◽  
Andreas Winkler ◽  
Robert Weser ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
High Frequency ◽  
Continuous Flow ◽  
Acoustic Streaming ◽  
Biological Cells ◽  
Cell Capture ◽  
Narrow Beam

Selective capture of biological cells using acoustic streaming vortices generated by a high-frequency, narrow-beam focused surface acoustic wave.

scholarly journals Picosecond Photoacoustic Metrology of SiO2 and LiNbO3 Layer Systems Used for High Frequency Surface-Acoustic-Wave Filters

2017 ◽  
Vol 7 (8) ◽  
pp. 822 ◽  
Author(s):  
Delia Brick ◽  
Erkan Emre ◽  
Martin Grossmann ◽  
Thomas Dekorsy ◽  
Mike Hettich
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
High Frequency ◽  
Wave Filters ◽  
Surface Acoustic Wave Filters

Droplets Transportation on a Piezoelectric Substrate with an Obstacle

2013 ◽  
Vol 339 ◽  
pp. 104-108
Author(s):  
Xiang Ting Fu ◽  
Yan Zha ◽  
An Liang Zhang
Keyword(s):  
Acoustic Wave ◽  
Radio Frequency ◽  
Surface Acoustic Wave ◽  
Acoustic Streaming ◽  
Microfluidic System ◽  
Frequency Signal ◽  
Radio Frequency Signal ◽  
Generate Surface ◽  
Interdigital Transducer ◽  
Piezoelectric Substrate

A method for a droplet transportation by jumping a obstacle on piezoelectric substrate is presented, and a device for the droplet transportation is implemented on a 128° yx-LiNbO3 piezoelectric substrate. An interdigital transducer and a reflector are fabricated on the piezoelectric substrate using microelectric technology. Hydrophobic film is coated on the area free of electrodes and a polydimethylsilicone obstacle is mounted on it. A radio frequency signal amplified by a power amplifier is applied to the interdigital transducer to generate surface acoustic wave. When the surface acoustic wave meets with the droplet on the piezoelectric substrate during transportation, part of acoustic wave enegy is radiated into the droplet, leading to internal acoustic streaming. Once the radio frequency signal with appropriate amplitude is suddenly decreased, part of the droplet will jump the obstacle due to interial force. Red dye solution drops are demonstrated for transportation experiments. Results show that a droplet can be transported from one side to another of the obstacle on piezoelectric substrate by help of surface acoustic wave. The presented method is helpful for microfluidic system on a piezoelectric substrate.

scholarly journals Demodulation Technique Based on Laser Interference for Weak Photo-Acoustic Signals on Water Surface

2018 ◽  
Vol 8 (12) ◽  
pp. 2423 ◽  
Author(s):  
Xiaolin Zhang ◽  
Hongjie Mao ◽  
Wenyan Tang
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
High Frequency ◽  
Water Surface ◽  
Processing System ◽  
Detection Accuracy ◽  
Laser Interference ◽  
Characteristic Ratio ◽  
Frequency Detection ◽  
Interference Signals

To detect underwater sound-generating targets, a water surface acoustic wave laser interference and signal demodulation technique is proposed in this paper. The underlying principle of this technique involves casting a laser beam onto the water surface disturbed by an underwater acoustic source and creating interference between lights reflected by the surface and reference lights. A data acquisition and processing system was employed to obtain water surface acoustic wave information from the interference signals by means of demodulation, thus allowing detection of the underwater target. For the purpose of this study, an interference detection platform was set up in an optical dark chamber. High-frequency water surface fluctuations were introduced in the reference optical path as the phase generated carriers to create laser interference signals in two different paths, which received demodulation based on an improved arc tangent demodulation algorithm and characteristic ratio algorithm, respectively, in view of their different frequencies. Water surface wave information was then derived from such low-frequency and high-frequency signals. According to test results, in the frequency range of 200 Hz–10 kHz, the frequency detection accuracy was better than 1 Hz. The amplitude measurements exhibited high repeatability, with a standard deviation lower than 2.5 nm. The theory proposed in this paper is therefore experimentally verified with good results.

High-frequency surface acoustic wave propagation in nanostructures characterized by coherent extreme ultraviolet beams

2009 ◽  
Vol 94 (9) ◽  
pp. 093103 ◽  
Author(s):  
Mark E. Siemens ◽  
Qing Li ◽  
Margaret M. Murnane ◽  
Henry C. Kapteyn ◽  
Ronggui Yang ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
High Frequency ◽  
Extreme Ultraviolet ◽  
Acoustic Wave Propagation

scholarly journals High-frequency surface acoustic wave device based on thin-film piezoelectric interdigital transducers

2004 ◽  
Vol 85 (10) ◽  
pp. 1757-1759 ◽  
Author(s):  
A. K. Sarin Kumar ◽  
P. Paruch ◽  
J.-M. Triscone ◽  
W. Daniau ◽  
S. Ballandras ◽  
...  
Keyword(s):  
Thin Film ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
High Frequency ◽  
Surface Acoustic Wave Device ◽  
Acoustic Wave Device ◽  
Wave Device

scholarly journals Three-dimensional numerical simulation and experimental investigation of boundary-driven streaming in surface acoustic wave microfluidics

Lab on a Chip ◽  
2018 ◽  
Vol 18 (23) ◽  
pp. 3645-3654 ◽  
Author(s):  
Chuyi Chen ◽  
Steven Peiran Zhang ◽  
Zhangming Mao ◽  
Nitesh Nama ◽  
Yuyang Gu ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Experimental Investigation ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Slip Velocity ◽  
Acoustic Streaming ◽  
Three Dimensional

We investigated the 3D acoustic streaming activated by the IDT immersed in the oil by experimental investigation and numerical simulation using the “slip velocity method”.

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