Design and Development of Micro-Power Generating Device for Biomedical Applications of Lab-on-a-Disc
The development of micro-power generators for centrifugal microfluidic discs enhances the platform as a green point-of-care diagnostic system and eliminates the need for attaching external peripherals to the disc. In this work, we present micro-power generators that harvest energy from the disc’s...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Joseph et al
2015
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| Subjects: | |
| Online Access: | http://eprints.intimal.edu.my/231/ http://eprints.intimal.edu.my/231/1/Design%20and%20Development%20of%20Micro-Power.PDF |
| Summary: | The development of micro-power generators for centrifugal microfluidic discs enhances the
platform as a green point-of-care diagnostic system and eliminates the need for attaching
external peripherals to the disc. In this work, we present micro-power generators that harvest
energy from the disc’s rotational movement to power biomedical applications on the
disc. To implement these ideas, we developed two types of micro-power generators using
piezoelectric films and an electromagnetic induction system. The piezoelectric-based generator
takes advantage of the film’s vibration during the disc’s rotational motion, whereas
the electromagnetic induction-based generator operates on the principle of current generation
in stacks of coil exposed to varying magnetic flux. We have successfully demonstrated
that at the spinning speed of 800 revolutions per minute (RPM) the piezoelectric film-based
generator is able to produce up to 24 microwatts using 6 sets of films and the magnetic
induction-based generator is capable of producing up to 125 milliwatts using 6 stacks of
coil. As a proof of concept, a custom made localized heating system was constructed to test
the capability of the magnetic induction-based generator. The heating system was able to
achieve a temperature of 58.62°C at 2200 RPM. This development of lab-on-a-disc micro
power generators preserves the portability standards and enhances the future biomedical
applications of centrifugal microfluidic platforms. |
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