Journal
LAB ON A CHIP
Volume 18, Issue 11, Pages 1560-1568Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7lc01350g
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Funding
- Sponsored Research and Industrial Consultancy (SRIC) Cell, IIT Kharagpur of the 'Plant on-a-Chip' project through the SGDRI grant
- IMPRINT Project coded 'GDD'
- IMPRINT Project coded 'ENC'
- MHRD, Govt. of India
- ICMR, New Delhi
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We exploit the combinatorial advantage of electrokinetics and tortuosity of a cellulose-based paper network on laboratory grade filter paper for the development of a simple, inexpensive, yet extremely robust (shows constant performance for 12 days) 'paper-and-pencil'-based device for energy harvesting applications. We successfully achieve harvesting of a maximum output power of similar to 640 pW in a single channel, while the same is significantly improved (by similar to 100 times) with the use of a multichannel microfluidic array (maximum of up to 20 channels). Furthermore, we also provide theoretical insights into the observed phenomenon and show that the experimentally predicted trends agree well with our theoretical calculations. Thus, we envisage that such ultra-low cost devices may turn out to be extremely useful in energizing analytical micro-devices in resource limited settings, for instance, in extreme point of care diagnostic applications.
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