Nanoengineered Surfaces for Thermal Energy Conversion

Bikram Bhatia, Daniel J. Preston, David M. Bierman, Nenad Miljkovic, Andrej Lenert, Ryan Enright, Youngsuk Nam, Ken Lopez, Nicholas Dou, Jean Sack, Walker R. Chan, Ivan Celanović, Marin Soljačić, Evelyn N. Wang

Research output: Contribution to journalConference article


We provide an overview of the impact of using nanostructured surfaces to improve the performance of solar thermophotovoltaic (STPV) energy conversion and condensation systems. We demonstrated STPV system efficiencies of up to 3.2%, compared to ≤1% reported in the literature, made possible by nanophotonic engineering of the absorber and emitter. For condensation systems, we showed enhanced performance by using scalable superhydrophobic nanostructures via jumping-droplet condensation. Furthermore, we observed that these jumping droplets carry a residual charge which causes the droplets to repel each other mid-flight. Based on this finding of droplet residual charge, we demonstrated electric-field-enhanced condensation and jumping-droplet electrostatic energy harvesting.

Original languageEnglish (US)
Article number012036
JournalJournal of Physics: Conference Series
Issue number1
StatePublished - Dec 10 2015
Externally publishedYes
Event15th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, PowerMEMS 2015 - Boston, United States
Duration: Dec 1 2015Dec 4 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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