On-demand electrohydrodynamic jetting with meniscus control by a piezoelectric actuator for ultra-fine patterns

Young Jae Kim; Sang Yoon Kim; Jun Sung Lee; Jungho Hwang; Yong Jun Kim

doi:10.1088/0960-1317/19/10/107001

On-demand electrohydrodynamic jetting with meniscus control by a piezoelectric actuator for ultra-fine patterns

Young Jae Kim, Sang Yoon Kim, Jun Sung Lee, Jungho Hwang, Yong Jun Kim

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

The on-demand ejection of ultra-fine droplets that uses both an electrohydrodynamic (EHD) force and mechanical actuation is presented. The liquid meniscus was controlled by a piezoelectric actuator, and the droplets were ejected by the EHD force. Through these effects, it was possible to obtain a high operational jetting frequency of 1 kHz with a short delay time (about 50 νs) in comparison with existing on-demand, EHD jetting methods, such as the pulsating jet mode (3-10 ms) and the pulsed cone-jet mode (3.6 ms). Simultaneously, we obtained ultra-fine droplets through adjustments of the piezoelectric driving waveform. The jetting characteristics were examined for both the hydrophobicity and the hydrophilicity of the surface of a capillary.

Original language	English
Article number	107001
Journal	Journal of Micromechanics and Microengineering
Volume	19
Issue number	10
DOIs	https://doi.org/10.1088/0960-1317/19/10/107001
Publication status	Published - 2009

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Mechanics of Materials
Mechanical Engineering
Electrical and Electronic Engineering

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10.1088/0960-1317/19/10/107001

Cite this

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title = "On-demand electrohydrodynamic jetting with meniscus control by a piezoelectric actuator for ultra-fine patterns",

abstract = "The on-demand ejection of ultra-fine droplets that uses both an electrohydrodynamic (EHD) force and mechanical actuation is presented. The liquid meniscus was controlled by a piezoelectric actuator, and the droplets were ejected by the EHD force. Through these effects, it was possible to obtain a high operational jetting frequency of 1 kHz with a short delay time (about 50 νs) in comparison with existing on-demand, EHD jetting methods, such as the pulsating jet mode (3-10 ms) and the pulsed cone-jet mode (3.6 ms). Simultaneously, we obtained ultra-fine droplets through adjustments of the piezoelectric driving waveform. The jetting characteristics were examined for both the hydrophobicity and the hydrophilicity of the surface of a capillary.",

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AU - Kim, Young Jae

AU - Kim, Sang Yoon

AU - Lee, Jun Sung

AU - Hwang, Jungho

AU - Kim, Yong Jun

PY - 2009

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AB - The on-demand ejection of ultra-fine droplets that uses both an electrohydrodynamic (EHD) force and mechanical actuation is presented. The liquid meniscus was controlled by a piezoelectric actuator, and the droplets were ejected by the EHD force. Through these effects, it was possible to obtain a high operational jetting frequency of 1 kHz with a short delay time (about 50 νs) in comparison with existing on-demand, EHD jetting methods, such as the pulsating jet mode (3-10 ms) and the pulsed cone-jet mode (3.6 ms). Simultaneously, we obtained ultra-fine droplets through adjustments of the piezoelectric driving waveform. The jetting characteristics were examined for both the hydrophobicity and the hydrophilicity of the surface of a capillary.

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On-demand electrohydrodynamic jetting with meniscus control by a piezoelectric actuator for ultra-fine patterns

Abstract

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