Study of piezoelectric transducer for liquid ejection

S. F. Hon; Kin Wing Kwok

doi:10.1109/FREQ.2009.5168355

Study of piezoelectric transducer for liquid ejection

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

3 Citations (Scopus)

Abstract

Self-focused acoustic transducers using using Fresnel zone plates have been fabricated and used to eject droplets of high-viscosity liquid, without nozzle, in the drop-on-demand mode. The Fresnel zone plate consists of a series of annular electrodes of half-wave-band source, and the acoustic waves are focused by constructive wave interference. Droplets of glycerin with a high-viscosity of 1400 cP can be ejected under a field of 200 kV/m and at a repetitive frequency of 120 Hz. The acoustic pressure distribution in the glycerin has been been simulated using an open-source computational fluid dynamic code OpenFOAM and measured using a needle-type hydrophone. Both the simulation and measurement give the location of two focal points which agree with the observations in the droplet ejection experiment.

Original language	English
Title of host publication	2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum
Pages	1050-1054
Number of pages	5
DOIs	https://doi.org/10.1109/FREQ.2009.5168355
Publication status	Published - 19 Nov 2009
Event	2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum - Besancon, France Duration: 20 Apr 2009 → 24 Apr 2009

Conference

Conference	2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum
Country/Territory	France
City	Besancon
Period	20/04/09 → 24/04/09

ASJC Scopus subject areas

Hardware and Architecture
Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

More information

10.1109/FREQ.2009.5168355

Cite this

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title = "Study of piezoelectric transducer for liquid ejection",

abstract = "Self-focused acoustic transducers using using Fresnel zone plates have been fabricated and used to eject droplets of high-viscosity liquid, without nozzle, in the drop-on-demand mode. The Fresnel zone plate consists of a series of annular electrodes of half-wave-band source, and the acoustic waves are focused by constructive wave interference. Droplets of glycerin with a high-viscosity of 1400 cP can be ejected under a field of 200 kV/m and at a repetitive frequency of 120 Hz. The acoustic pressure distribution in the glycerin has been been simulated using an open-source computational fluid dynamic code OpenFOAM and measured using a needle-type hydrophone. Both the simulation and measurement give the location of two focal points which agree with the observations in the droplet ejection experiment.",

author = "Hon, {S. F.} and Kwok, {Kin Wing}",

year = "2009",

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doi = "10.1109/FREQ.2009.5168355",

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Hon, SF & Kwok, KW 2009, Study of piezoelectric transducer for liquid ejection. in 2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum., 5168355, pp. 1050-1054, 2009 IEEE International Frequency Control Symposium Joint with the 22nd European Frequency and Time Forum, Besancon, France, 20/04/09. https://doi.org/10.1109/FREQ.2009.5168355

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AB - Self-focused acoustic transducers using using Fresnel zone plates have been fabricated and used to eject droplets of high-viscosity liquid, without nozzle, in the drop-on-demand mode. The Fresnel zone plate consists of a series of annular electrodes of half-wave-band source, and the acoustic waves are focused by constructive wave interference. Droplets of glycerin with a high-viscosity of 1400 cP can be ejected under a field of 200 kV/m and at a repetitive frequency of 120 Hz. The acoustic pressure distribution in the glycerin has been been simulated using an open-source computational fluid dynamic code OpenFOAM and measured using a needle-type hydrophone. Both the simulation and measurement give the location of two focal points which agree with the observations in the droplet ejection experiment.

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Study of piezoelectric transducer for liquid ejection

Abstract

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