Nano Archive

High-frequency surface acoustic wave atomizer

Ju, Jungmyoung and Yamagata, Yutaka and Ohmori, Hitoshi and Higuchi, Toshiro (2008) High-frequency surface acoustic wave atomizer. Sensors and Actuators A: Physical, 145-146 . 437 - 441.

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Official URL: http://www.sciencedirect.com/science/article/B6THG...

Abstract

High-frequency surface acoustic wave (SAW) atomizers, with resonance frequencies in the range from 50 to 95 MHz, were newly constructed and tested. Atomization characteristics were evaluated in terms of atomization speed and deposited dry particle diameter distribution. Dry nano-sized particles formed from atomized droplets were collected by means of electrostatic force and the size distribution was measured by field-emission-type scanning electron microscopy. Mean diameters of original droplets formed by atomization were estimated to be 5.7 μm (50 MHz), 4.4 μm (75 MHz) and 2.7 μm (95 MHz), respectively, from the dry particle diameter distribution. By collecting dried nanoparticles, it was confirmed that atomization by high-frequency SAW device occurred rather than thermal evaporation. The drop size was slightly larger than Lang's estimation predicting the relationship between drop size and atomization frequency.

Item Type:Article
Additional Information:Special Issue: Transducers/07 Eurosensors XXI, The 14th International Conference on Solid State Sensors, Actuators and Microsystems and the 21st European Conference on Solid-State Transducers, The 14th International Conference on Solid State Sensors, Actuators and Microsystems and the 21st European Conference on Solid-State Transducers
Uncontrolled Keywords:Surface acoustic wave atomizer and electrostatic deposition (SAW-ED)
Subjects:Analytical Science > Nanotechnology for sensing and actuating
ID Code:4943
Deposited By:SPI
Deposited On:09 Apr 2009 12:49
Last Modified:09 Apr 2009 12:49

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