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Extracting Photosynthetic Electrons from Thylakoids on Micro Pillar Electrode

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Abstract

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.

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Authors and Affiliations

  1. School of Mechanical Engineering, Yonsei University, 3rd Engineering Building 326, Yonseiro 50, Seodaemoon-gu, Seoul, 03722, Republic of Korea

    DongHyun Ryu, Yong Jae Kim & WonHyoung Ryu

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  1. DongHyun Ryu
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  2. Yong Jae Kim
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  3. WonHyoung Ryu
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Correspondence to WonHyoung Ryu.

Additional information

DongHyun Ryu M.S. candidate in the Department of Mechanical Engineering, Yonsei University. His research interest is Photosynthetic Solar Energy Conversion System.

Yong Jae Kim Ph.D. candidate in the Department of Mechanical Engineering, Yonsei University. His research interests are Photosynthetic Solar Energy Conversion System, Micro/Nano Fabrication Techniques, Plasmonics.

WonHyoung Ryu Professor in the Department of Mechanical Engineering, Yonsei University. His research interests are Micro/Nano Fabrication Techniques, Photosynthetic Solar Energy Conversion System, Microneedles, Bio Sensors

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Ryu, D., Kim, Y.J. & Ryu, W. Extracting Photosynthetic Electrons from Thylakoids on Micro Pillar Electrode. Int. J. of Precis. Eng. and Manuf.-Green Tech. 5, 631–636 (2018). https://doi.org/10.1007/s40684-018-0065-y

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  • DOI: https://doi.org/10.1007/s40684-018-0065-y

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