4.3 Article

Electrical response of culture media during bacterial growth on a paper-based device

Journal

JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 56, Issue 5, Pages -

Publisher

IOP PUBLISHING LTD
DOI: 10.7567/JJAP.56.05EC04

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In this work, we evaluated the feasibility of a paper-based bacterial detection system. The paper served as a substrate for the measurement electrodes and the culture medium. Using a printing technique, we patterned gold electrodes onto the paper substrate and applied Luria broth (LB) agar gel as a culture medium on top of the electrodes. As the first step towards the development of a bacterial detection system, we determined changes in the surface potential during bacterial growth and monitored these changes over 24 h. This allowed us to correlate changes in the surface potential with the different growth phases of the bacteria. (C) 2017 The Japan Society of Applied Physics

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