Articles by Jared Roy in JoVE
Characterizing Electron Transport through Living Biofilms Matthew Yates1, Sarah Strycharz-Glaven1, Joel Golden1, Jared Roy1,2, Stanislav Tsoi3, Jeffrey Erickson1, Mohamed El-Naggar4, Scott Calabrese Barton5, Leonard Tender1 1Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, 2George Mason University, 3Chemistry Division, Naval Research Laboratory, 4Departments of Physics, Biological Sciences, and Chemistry, University of Southern California, 5Department of Chemical Engineering and Materials Science, Michigan State University A protocol for measuring electrical conductivity of living microbial biofilms under physiologically relevant conditions is presented.
Other articles by Jared Roy on PubMed
Thermally Activated Long Range Electron Transport in Living Biofilms Physical Chemistry Chemical Physics : PCCP. Dec, 2015 | Pubmed ID: 26611733 Microbial biofilms grown utilizing electrodes as metabolic electron acceptors or donors are a new class of biomaterials with distinct electronic properties. Here we report that electron transport through living electrode-grown Geobacter sulfurreducens biofilms is a thermally activated process with incoherent redox conductivity. The temperature dependency of this process is consistent with electron-transfer reactions involving hemes of c-type cytochromes known to play important roles in G. sulfurreducens extracellular electron transport. While incoherent redox conductivity is ubiquitous in biological systems at molecular-length scales, it is unprecedented over distances it appears to occur through living G. sulfurreducens biofilms, which can exceed 100 microns in thickness.