DocumentCode :
783107
Title :
A MEMS Photosynthetic Electrochemical Cell Powered by Subcellular Plant Photosystems
Author :
Lam, Kien Bang ; Johnson, Eric A. ; Chiao, Mu ; Lin, Liwei
Volume :
15
Issue :
5
fYear :
2006
fDate :
10/1/2006 12:00:00 AM
Firstpage :
1243
Lastpage :
1250
Abstract :
A microelectromechanical systems (MEMS) photosynthetic electrochemical cell 
was demonstrated that harnesses the subcellular thylakoid photosystems isolated from spinach cells to convert light energy into electricity. Subject to light intensity of 2000 
photons/ 
/s, it generated an open circuit voltage (OCV) of 470 mV and a current density of 1.1 
at 5.2 
. In the dark, the 
continued to yield power for a few minutes using reduced equivalents generated during illumination, generating 330 mV OCV and 0.1 with a 1 
load. The output level is comparable to other MEMS biological fuel cells previously reported. The biosolar cell was bulk-micromachined from silicon and Pyrex substrates and assembled like a fuel cell in an anode-PEM-cathode configuration. This biosolar cell could have potential to serve as a power source for micro-scale devices like remote sensors.1359
was demonstrated that harnesses the subcellular thylakoid photosystems isolated from spinach cells to convert light energy into electricity. Subject to light intensity of 2000 photons/ /s, it generated an open circuit voltage (OCV) of 470 mV and a current density of 1.1 at 5.2 . In the dark, the continued to yield power for a few minutes using reduced equivalents generated during illumination, generating 330 mV OCV and 0.1 with a 1 load. The output level is comparable to other MEMS biological fuel cells previously reported. The biosolar cell was bulk-micromachined from silicon and Pyrex substrates and assembled like a fuel cell in an anode-PEM-cathode configuration. This biosolar cell could have potential to serve as a power source for micro-scale devices like remote sensors.1359Keywords :
Biological fuel cell; micropower source; photosynthesis; photosystems; solar cell; Circuits; Current density; Energy conversion; Fuel cells; Lighting; Microelectromechanical systems; Micromechanical devices; Power generation; Silicon; Voltage; Biological fuel cell; micropower source; photosynthesis; photosystems; solar cell;
fLanguage :
English
Journal_Title :
Microelectromechanical Systems, Journal of
Publisher :
ieee
ISSN :
1057-7157
Type :
jour
DOI :
10.1109/JMEMS.2006.880296
Filename :
1707785
Link To Document :
