AI Article Synopsis
- Developed efficient microvalve systems using an ionic polymer-metal composite (IPMC) diaphragm actuator that operates through applied voltages and lithium ion flux.
- The IPMC was enhanced with platinum nanoparticles on Nafion film, which improved its actuation performance as confirmed by SEM imaging.
- Successful flow control in microfluidic channels was demonstrated, indicating the potential for IPMC-based microvalves in various applications.
Article Abstract
Simple and highly efficient microvalve systems based on an ionic polymer-metal composite (IPMC) diaphragm actuator have been developed. The microvalve system that was fabricated in this work operates when open and close voltage is applied, due to the phenomena of lithium ion flux and the subsequent electro-osmotic drag of water to the cathode. IPMC was prepared by compositing with platinum nanoparticles on both sides of Nafion thin film. SEM images of the IPMC showed the high density and uniform size distribution of the Pt nanoparticles in the interpenetrating layer to ensure the proper performance of an IPMC actuator. The displacement of the IPMC for the microvalve was measured with a laser displacement meter. The application of open and close voltage made the operation of the valve faster. The fluorescence images of the flow in the fabricated IPMC-based microvalve system showed the successful operation of flow control in the microfluidic channel. The IPMC-based microvalve system shows a potential of IPMC for application as an actuator in microfluidic systems.
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| http://dx.doi.org/10.1166/jnn.2011.4459 | DOI Listing |
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