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Energy harvesting using droplet

Goswami, A and Sen, P (2018) Energy harvesting using droplet. [Book Chapter]

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Energy harvesting becomes increasingly important from free mechanical vibration for running self-sustained wireless electronics, remote sensors, and power portable devices, which have emerged over the past decades. Transducers using the principle of electromagnetic induction defined by Faraday’s law are predominantly used as energy harvesters since their inception. Furthermore, piezoelectric energy harvesters are becoming one of the matured technologies that satisfy the above demand to a significant extent. However, despite a large potential of variable capacitor in energy harvesting, it remains as an infant till date. Nevertheless, numerous articles have been devoted to harvest energy using the concept of variable capacitance utilizing the motion of conductive (mercury) and dielectric (water) droplets. Applying the concept stated above using the idea of reverse electrowetting on dielectric, bulge instability, and water motion active transducer energy harnessing have been possible as shown in several literatures. By rolling the droplet on thin dielectric (known as electret) superhydrophobic surfaces (e.g., Teflon, Parylene, Cytop, etc.) using nonresonant free-vibration energy harvesting was demonstrated by various authors. In this chapter, we will revisit the concept of energy harvesting from electrets by using the above ideas of moving droplets.

Item Type: Book Chapter
Publication: Nanomaterials for Green Energy
Publisher: Elsevier
Additional Information: The copyright of this article is belongs to the Elsevier.
Keywords: Bulge instability; Droplet; Electret; Electrowetting; Variable capacitance; Wetting
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 05 Jun 2022 04:53
Last Modified: 16 Aug 2022 05:30
URI: https://eprints.iisc.ac.in/id/eprint/65024

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