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  4. An electrodynamic injection pump - a novel actuator for microsystem technology
 
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1990
Conference Paper
Title

An electrodynamic injection pump - a novel actuator for microsystem technology

Abstract
A silicon micromachined electrohydrodynamic (EHD) injection pump for microsystem technology is presented. The pump consists of two opposed grids, which are micromachined from single crystal silicon and bonded together anodically. Pumping and static pressure generation was achieved with different polar fluids such as ethanole, propanole or acetone but most organic solvents can be pumped. With ethanole a maximum static pressure of 2,5 kPa (32 square centimetre pumping head) and a pumping rate of 14 ml/min at a pressure of 420 Pa were achieved. For the realized pump the grid area measures 3 mm x 3 mm and the grid distance 350 mym. Pumping started at d.c. voltages as low as 40 V, wheras 700 V were needed for maximum throughput. Pumping was also observed with a.c. driving voltage. To increase pressure serveral of the devices can be stacked. This opens up new applications like micromachined cooling systems or microhydraulic actuators. The maximum flow rate and pressure head can be varied in a wild range by adjusting the dimensions of the pump. By further reducing the grid distance driving voltages below 100 V are expected.
Author(s)
Plettner, A.
Richter, A.
Sandmaier, H.
Mainwork
Micro-System Technologies '90. 1st International Conference on Micro, Electro, Opto, Mechanic Systems and Components  
Conference
International Conference on Micro Electro, Opto, Mechanic Systems and Components 1990  
Language
English
IFT  
Keyword(s)
  • actuator

  • Aktor

  • EHD

  • electrohydrodynamic

  • Elektrohydrodynamik

  • injection pump

  • MEMS

  • micropump

  • Mikromechanik

  • Mikropumpe

  • Mikrosystemtechnik

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