Extracting Photosynthetic Electrons from Thylakoids on Micro Pillar Electrode

Dong Hyun Ryu, Yong Jae Kim, Won Hyoung Ryu

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


Extraction of photosynthetic currents from thylakoids was studied using micro pillar structured electrode. Thylakoids were isolated from spinach leaves, and the size and shape of thylakoids were estimated from scanning electron microscopy images. Based on the geometry information of thylakoids, micro pillar shaped electrode was designed and fabricated using metal-assisted chemical etching of silicon wafers. Influence of photovoltaic effect on the silicon-based micro pillar electrode was confirmed to be negligible. Photosynthetic currents were measured in a three-electrode setup with an electron mediator, potassium ferricyanide. Photosynthetic currents from micro pillar electrodes were enhanced compared with the currents from flat electrodes. This indicates the significance of the enhanced contact between thylakoids and an electrode for harvesting photosynthetic electrons.

Original languageEnglish
Pages (from-to)631-636
Number of pages6
JournalInternational Journal of Precision Engineering and Manufacturing - Green Technology
Issue number5
Publication statusPublished - 2018 Oct 1

Bibliographical note

Funding Information:
This work was supported by the Center for Advanced Meta-Materials (CAMM) funded by the Ministry of Science, ICT and Future Planning as Global Frontier Project. (CAMM-No. NRF-2014M3A6B3063716)

Publisher Copyright:
© 2018, Korean Society for Precision Engineering.

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Management of Technology and Innovation


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