Novel microbial photobioelectrochemical cell using an invasive ultramicroelectrode array and a microfluidic chamber
2017
Ha, Joon-Geun | Song, Young Seok | Jung, Sunghwan | Jang, Soohwan | Kim, Yong-Kweon | Bai, Seoung Jai | Park, Jae-Hyoung | Lee, Seung Ki
OBJECTIVE: To fabricate a novel microbial photobioelectrochemical cell using silicon microfabrication techniques. RESULTS: High-density photosynthetic cells were immobilized in a microfluidic chamber, and ultra-microelectrodes in a microtip array were inserted into the cytosolic space of the cells to directly harvest photosynthetic electrons. In this way, the microbial photobioelectrochemical cell operated without the aid of electron mediators. Both short circuit current and open circuit voltage of the microbial photobioelectrochemical cell responded to light stimuli, and recorded as high as 250 pA and 45 mV, respectively. CONCLUSION: A microbial photobioelectrochemical cell was fabricated with potential use in next-generation photosynthesis-based solar cells and sensors.
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