Title :
Hybrid on Demand Jetting System for Ultra Fine Droplet based on Electrohydrodynamic and Piezoelectric Actuation
Author :
Kim, Young-Jae ; Lee, Jun-Sung ; Kim, Sang-Yoon ; Park, Sung-Eun ; Hwang, Jungho ; Kim, Yong-Jun
Abstract :
This paper demonstrates a hybrid jetting system (HJS) using both electrohydrodynamic (EHD) force and mechanical actuation to generate ultra fine droplets with drop on demand (DOD). In the proposed HJS, liquid meniscus was formed by a piezoelectric actuator and jets were generated by EHD force. Jetting characteristics were also examined for hydrophobicity and hydrophilicity of a surface of a capillary. With the HJS, on demand jetting of femto-liter was achieved with a frequency of 5 kHz.
Keywords :
capillarity; drops; electrohydrodynamics; hydrophilicity; hydrophobicity; jets; piezoelectric actuators; EHD; capillary surface; electrohydrodynamic actuation; electrohydrodynamic force; frequency 5 kHz; hybrid jetting system; hydrophilicity; hydrophobicity; mechanical actuation; piezoelectric actuation; piezoelectric actuator; ultra fine droplets; Delay effects; Electrodes; Electrohydrodynamics; Frequency; Manufacturing processes; Printing; Switches; US Department of Defense; Ultrafast electronics; Voltage;
Conference_Titel :
Micro Electro Mechanical Systems, 2009. MEMS 2009. IEEE 22nd International Conference on
Conference_Location :
Sorrento
Print_ISBN :
978-1-4244-2977-6
Electronic_ISBN :
1084-6999
DOI :
10.1109/MEMSYS.2009.4805426
