title: Local electrical modification of a conductivity-switching polyimide film formed by molecular layer deposition.
abstract: The electrical modification of a conductivity-switching polyimide film via molecular layer deposition (MLD) is studied for ultrahigh density data storage based on a scanning probe microscope (SPM). A PMDA-ODA (PMDA = 1, 2, 3, 5-benzenetetracarboxylic anhydride, ODA = 4, 4-oxydianiline) film as a recording medium is uniformly formed from a self-assembled monolayer on a Au surface by MLD. It is demonstrated that the conductivity of the film can be changed by applying a voltage between a SPM probe and the film. This conductivity-switching phenomenon is discussed by the molecular orbital approach and considered to be caused by the charge transfer effect or carrier trapping effect of PMDA-ODA.
authors.affiliation: WPI Advanced Institute for Materials Research, Tohoku University, 6-6-01 Aramaki-Aza-Aoba, Aoba-ku, Sendai 980-8579, Japan. s-yoshida@mems.mech.tohoku.ac.jp
authors.forename: Shinya
authors.initials: S
authors.lastname: Yoshida
authors.forename: Takahito
authors.initials: T
authors.lastname: Ono
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Esashi