Figure 6
From: Implantable Biofuel Cells Operating In Vivo—Potential Power Sources for Bioelectronic Devices
A biofuel cell implanted in a snail: (a) cyclic voltammograms of the PQQ-GDH-anode: curves b and a were obtained in the absence and presence of 20 mmol/L glucose, respectively; (b) cyclic voltammograms of the laccase-cathode: curves b and a were obtained in the absence and presence of O2, respectively. All cyclic voltammograms were obtained in vitro in a buffer solution, pH 7.4, scan rate 1 mV·s−1; (c) the electrical circuitry including a biofuel cell implanted in a snail and connected to a variable load resistance; (d) variation of the voltage produced by the biofuel cell in vivo in real time upon feeding the snail. (Parts “a–c” are adapted from reference (58) with permission, copyright American Chemical Society, 2012.)