Droplet actuation on a digital microfluidic chip using a 5 volt battery


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This paper presents a circuit using a 5-volt DC battery to actuate droplets on a DMF chip. The output of the circuit is a controllable high voltage, high frequency AC signal which can actuate a droplet on array of fabricated electrodes. With the use of this small driver circuit, different DMF operators (i.e., moving, dispensing, splitting, and merging) were successfully performed. As an example, Figure 2 shows manipulation and splitting of a DI water conducted on a DMF platform. Due to the fact that the output current of the CCFL transformer is very low, the chance of dielectric breakdown is significantly reduced in the system.

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Journal: TechConnect Briefs
Volume: 2, Nanotechnology 2014: MEMS, Fluidics, Bio Systems, Medical, Computational & Photonics
Published: June 15, 2014
Pages: 129 - 131
Industry sectors: Advanced Materials & Manufacturing | Sensors, MEMS, Electronics
Topic: Inkjet Design, Materials & Fabrication
ISBN: 978-1-4822-5827-1