title: A light-powered bio-capacitor with nanochannel modulation.
abstract: An artificial bio-capacitor system is established, consisting of the proton-pump protein proteorhodopsin and a modified alumina nanochannel, inspired by the capacitor-like behavior of plasma membranes realized through the cooperation of ion-pump and ion-channel proteins. Capacitor-like features of this simplified system are realized and identified, and the photocurrent duration time can be modulated by nanochannel modification to obtain favorable square-wave currents.
authors.affiliation: Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing, 100191, P. R. China.
authors.forename: Siyuan
authors.initials: S
authors.lastname: Rao
authors.forename: Shanfu
authors.initials: S
authors.lastname: Lu
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Guo
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
authors.forename: Deliang
authors.initials: D
authors.lastname: Chen
authors.forename: Yan
authors.initials: Y
authors.lastname: Xiang
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry*; D040761:Biomimetic Materials / Q000737:chemistry*; D055615:Electrical Equipment and Supplies; D004867:Equipment Design; D008027:Light; D008422:Materials Testing; D008567:Membranes, Artificial; D036103:Nanotechnology / Q000379:methods*; D012243:Rhodopsin / Q000737:chemistry*; D025604:Rhodopsins, Microbial
chemical_list: D008567:Membranes, Artificial; D025604:Rhodopsins, Microbial; C413548:proteorhodopsin; D012243:Rhodopsin; D000537:Aluminum Oxide
keywords: bio-capacitors; bioelectricity; nanobiotechnology; nanochannels; photo-induced proton pumps