Nitrogen doping effect on flow-induced voltage generation from graphene-water interface

Takeru Okada, Golap Kalita, Masaki Tanemura, Ichiro Yamashita, M. Meyyappan, Seiji Samukawa

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Liquid-flow-induced generation of electricity using nanocarbons, particularly graphene-water interface, has received attention for energy harvesting. Here, we have obtained voltage generation from a single water droplet motion on graphene. We have investigated the effect of the graphene surface condition on flow-induced voltage generation, which is controlled by heteroatom doping. Nitrogen-doped graphene shows three times higher voltage generation compared to pristine graphene due to the doping-induced surface charge of graphene. Graphene surface potential tuning by doping is shown to play an important role in voltage generation.

Original languageEnglish
Article number023902
JournalApplied Physics Letters
Issue number2
Publication statusPublished - 2018 Jan 8


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