title: Charge retention of self-assembled ferredoxin monolayer by the reduction-oxidation control for biomemory device.
abstract: The oxidation-reduction control to store charges in self-assembled ferredoxin layer was investigated by scanning electrochemical method. Micro sized spot arrays consisting of ferredoxin proteins which used as the storage element were formed on chemically modified gold coated glass by micro contanct printing method. The formation of ferredoxin array was confirmed by the atomic force microscopy. The charge store was investigated by external applied reduction potential to ferredoxin as a write function, and the stored reducing charge was measured as a read function of storage applications. In the reduction state, the stored charge was maintained for around 90 sec. This ferredoxin layer can be used as the molecular size information storage by applying the reducing potential and measuring the current flow when achieving the current of individual ferredoxin molecule.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Sogang University, #1 Shinsu-dong, Mapo-gu, Seoul 121-742, Republic of Korea.
authors.forename: Yun-Suk
authors.initials: YS
authors.lastname: Nam
authors.forename: Sang-Uk
authors.initials: SU
authors.lastname: Kim
authors.forename: Taek
authors.initials: T
authors.lastname: Lee
authors.forename: Da-Yeon
authors.initials: DY
authors.lastname: Kang
authors.forename: Junhong
authors.initials: J
authors.lastname: Min
authors.forename: Jeong-Woo
authors.initials: JW
authors.lastname: Choi
mesh_terms: D001704:Biopolymers / Q000737:chemistry*; D016248:Computer Storage Devices; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005288:Ferredoxins / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods; D010084:Oxidation-Reduction; D011485:Protein Binding; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*
chemical_list: D001704:Biopolymers; D005288:Ferredoxins