Monitoring Droplet Ejection and Landing in Electrospray with Electric Current and Acoustic Emission
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概要
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Droplet ejection and landing phenomenon for electrospray was investigated using a simple capillary inkjet head and a planar-needle inkjet head. The waveform of electric current passing through between the inkjet head and a counter electrode was measured to investigate how a fine droplet is generated. The measurement of elastic waves using an acoustic emission (AE) sensor placed on the back of a counter electrode was carried out to detect the condition of droplet landing directly. The droplet ejection synchronizing with both a measured pulse of electric current and a generated elastic wave could be ascertained. Forming a single-peak pulse as the electric current was found to be a principal element in obtaining a very fine droplet with a volume of, for example, a few 10 fL. Moreover, a continuous drawing of minute dots was demonstrated on a conventional photopaper, and a fine dot line having a regulated pitch determined by the frequency of applied voltage and the shift velocity of the paper could be obtained synchronizing with both sensing methods.
- 2008-04-25
著者
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Asano Tanemasa
Faculty Of Information Science And Electrical Engineering Kyushu University
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Hakiai Kazunori
Quality Assurance Division, Yaskawa Electric Corporation, 2-1 Kurosaki Shiroishi, Yahatanishi-ku, Kitakyushu 806-0004, Japan
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Ishida Yuji
Quality Assurance Division, Yaskawa Electric Corporation, 2-1 Kurosaki Shiroishi, Yahatanishi-ku, Kitakyushu 806-0004, Japan
関連論文
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- Monitoring Droplet Ejection and Landing in Electrospray with Electric Current and Acoustic Emission
- FOREWORD
- Properties of Ink-Droplet Formation in Double-Gate Electrospray
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- Inkjet Printing of Nickel Nanosized Particles for Metal-Induced Crystallization of Amorphous Silicon
- Inkjet-Printed Metal-Colloid-Induced Crystallization of Amorphous Silicon