A Parylene MEMS Electrothermal Valve.
A Parylene MEMS Electrothermal Valve.
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DOI：
10.1109/jmems.2009.2031689
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发表时间：
2009-12
期刊：
影响因子：
--
通讯作者：
Meng E
中科院分区：
文献类型：
--
作者：
Li PY;Givrad TK;Holschneider DP;Maarek JM;Meng E
The first microelectromechanical-system normally closed electrothermal valve constructed using Parylene C is described, which enables both low power (in milliwatts) and rapid operation (in milliseconds). This low-power valve is well suited for applications in wirelessly controlled implantable drug-delivery systems. The simple design was analyzed using both theory and modeling and then characterized in benchtop experiments. Operation in air (constant current) and water (current ramping) was demonstrated. Valve-opening powers of 22 mW in air and 33 mW in water were obtained. Following integration of the valve with catheters, our valve was applied in a wirelessly operated microbolus infusion pump, and the in vivo functionality for the appropriateness of use of this pump for future brain mapping applications in small animals was demonstrated.
