title: Free-Standing Polyimide Nanotips on Substrates for Preparation of Hollow TiO2 Nanotips.
abstract: We report a facile method to fabricate free-standing polyimide (PI) nanotips on substrates by using plasma treatment with oxygen gas. The PI nanotips were prepared from the self-organization of unetchable materials deposited on a PI film during the plasma treatment. This approach provides a single-step process for the preparation of polymer nanotips in a large area (>inch scale). Furthermore, a selective patterning of the PI nanotips in a specific area was achieved by using a shadow mask. Due to excellent thermal resistance of PI, the PI nanotips maintained structural integrity at high temperature (~ 300 °C). To demonstrate potential application of PI nanotips as a template for hollow nanostructures, hollow TiO2 nanotips were prepared after atomic layer deposition of TiO2 followed by the burning of PI layer.
authors.forename: Gumhye
authors.initials: G
authors.lastname: Jeon
authors.forename: Jinmu
authors.initials: J
authors.lastname: Jung
authors.forename: Seunghyun
authors.initials: S
authors.lastname: Lee
authors.forename: Keum-Yong
authors.initials: KY
authors.lastname: Seong
authors.forename: Dae Youn
authors.initials: DY
authors.lastname: Hwang
authors.forename: Hyeog Soong
authors.initials: HS
authors.lastname: Kwon
authors.forename: Byoung Chul
authors.initials: BC
authors.lastname: Kim
authors.forename: Joo Man
authors.initials: JM
authors.lastname: Kim
authors.forename: Jin Kon
authors.initials: JK
authors.lastname: Kim
authors.forename: Seung Yun
authors.initials: SY
authors.lastname: Yang