title: Nano-storage wires.
abstract: We report the development of "nano-storage wires" (NSWs), which can store chemical species and release them at a desired moment via external electrical stimuli. Here, using the electrodeposition process through an anodized aluminum oxide template, we fabricated multisegmented nanowires composed of a polypyrrole segment containing adenosine triphosphate (ATP) molecules, a ferromagnetic nickel segment, and a conductive gold segment. Upon the application of a negative bias voltage, the NSWs released ATP molecules for the control of motor protein activities. Furthermore, NSWs can be printed onto various substrates including flexible or three-dimensional structured substrates by direct writing or magnetic manipulation strategies to build versatile chemical storage devices. Since our strategy provides a means to store and release chemical species in a controlled manner, it should open up various applications such as drug delivery systems and biochips for the controlled release of chemicals.
authors.affiliation: Department of Biophysics and Chemical Biology, Seoul National University, Seoul 151-747, Korea.
authors.forename: Dong Jun
authors.initials: DJ
authors.lastname: Lee
authors.forename: Eunji
authors.initials: E
authors.lastname: Kim
authors.forename: Daesan
authors.initials: D
authors.lastname: Kim
authors.forename: Juhun
authors.initials: J
authors.lastname: Park
authors.forename: Seunghun
authors.initials: S
authors.lastname: Hong
mesh_terms: D000255:Adenosine Triphosphate / Q000737:chemistry*; D000537:Aluminum Oxide / Q000737:chemistry; D015374:Biosensing Techniques; D001709:Biotechnology; D016503:Drug Delivery Systems; D004563:Electrochemistry; D004566:Electrodes; D004595:Electroplating; D006046:Gold / Q000737:chemistry; D008280:Magnetics; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology / Q000379:methods*; D053770:Nanowires / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D011758:Pyrroles / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D011108:Polymers; D011758:Pyrroles; D014867:Water; C067635:polypyrrole; D006046:Gold; D009532:Nickel; D000255:Adenosine Triphosphate; D000537:Aluminum Oxide