Abstract:
A structure includes a substrate, a first layer formed on the substrate, and a second layer formed on the first layer. The first layer is comprised of a self-assembled monolayer and contains 4-(6-hydroxyhexyloxy)-4′-methoxybiphenyl. The second layer is obtained by micro-phase separation of a block copolymer containing a hydrophilic polymer comprised of polyethylene oxide and a hydrophobic polymer comprised of polymethacrylic acid containing azobenzene at the side chain. The second layer contains a cylinder phase with its long axis being oriented perpendicular to the substrate. The thickness T of the second layer is within a range of A≦T≦50 nm, where A is a phase separation period length satisfying 5 nm≦A≦50 nm.
Abstract:
A pattern forming method includes forming a coating film containing a hydrophilic first homopolymer having a first bonding group and a hydrophobic second homopolymer having a second bonding group capable of bonding with the first bonding group, forming a bond between the first and second bonding group to produce a block copolymer of the first and second homopolymners, and heating the coating film to microphase-separating the copolymer into a hydrophilic domain and a hydrophobic domain. The hydrophilic and hydrophobic domains are arranged alternately. The bond is broken, then selectively dissolving-removing either domain by a solvent to provide a polymer pattern of a remainder domain.
Abstract:
According to one embodiment, there is provided an optical disk including a photopolymer layer including a recording pattern formed by concave pits, and a reflecting film formed on the photopolymer layer. The depth direction of the concave pits is opposite to the direction in which the reflecting film is formed.
Abstract:
There are provided a mounting unit configured to selectively mount first and second optical disks in which characteristics of recording films are different from one another, and a discriminating unit configured to discriminate which of the first and second optical disks is mounted on the mounting unit based on a level of a reproduction signal which is obtained by reproducing innermost peripheral portion of the first or second optical disk mounted on the mounting unit.