Jumping-droplet energy harvesting with nanoengineered surfaces

N. Miljkovic, D. J. Preston, E. N. Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We experimentally demonstrate jumping-droplet-based energy harvesting with nanoengineered surface designs. With recent advancements in micro/nanofabrication techniques, non-wetting engineered surfaces have enabled condensing coalesced droplets to spontaneously jump and simultaneously obtain electrostatic charge. In this work, we take advantage of these droplet characteristics to demonstrate energy harvesting for the first time. The charged droplets jump between superhydrophobic copper oxide (CuO) and hydrophilic copper (Cu) surfaces to create an electrical potential and generate electrical power during formation of atmospheric dew. We demonstrated power densities of ~0.06 nW/cm 2 , which can be improved near term to ~100 µW/cm 2 .

Original languageEnglish (US)
Title of host publication2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014
EditorsMehran Mehregany, Mark G. Allen
PublisherTransducer Research Foundation
Pages297-298
Number of pages2
ISBN (Electronic)9781940470016
StatePublished - Jan 1 2014
Externally publishedYes
Event2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014 - Hilton Head Island, United States
Duration: Jun 8 2014Jun 12 2014

Publication series

NameTechnical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop

Conference

Conference2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014
CountryUnited States
CityHilton Head Island
Period6/8/146/12/14

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Hardware and Architecture

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  • Cite this

    Miljkovic, N., Preston, D. J., & Wang, E. N. (2014). Jumping-droplet energy harvesting with nanoengineered surfaces. In M. Mehregany, & M. G. Allen (Eds.), 2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014 (pp. 297-298). (Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop). Transducer Research Foundation.