title: Digital selective growth of a ZnO nanowire array by large scale laser decomposition of zinc acetate.
abstract: We develop a digital direct writing method for ZnO NW micro-patterned growth on a large scale by selective laser decomposition of zinc acetate. For ZnO NW growth, by replacing the bulk heating with the scanning focused laser as a fully digital local heat source, zinc acetate crystallites can be selectively activated as a ZnO seed pattern to grow ZnO nanowires locally on a larger area. Together with the selective laser sintering process of metal nanoparticles, more than 10,000 UV sensors have been demonstrated on a 4 cm × 4 cm glass substrate to develop all-solution processible, all-laser mask-less digital fabrication of electronic devices including active layer and metal electrodes without any conventional vacuum deposition, photolithographic process, premade mask, high temperature and vacuum environment.
authors.affiliation: Applied Nano Technology and Science (ANTS) lab, Mechanical Engineering Department, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701, Korea.
authors.forename: Sukjoon
authors.initials: S
authors.lastname: Hong
authors.forename: Junyeob
authors.initials: J
authors.lastname: Yeo
authors.forename: Wanit
authors.initials: W
authors.lastname: Manorotkul
authors.forename: Hyun Wook
authors.initials: HW
authors.lastname: Kang
authors.forename: Jinhwan
authors.initials: J
authors.lastname: Lee
authors.forename: Seungyong
authors.initials: S
authors.lastname: Han
authors.forename: Yoonsoo
authors.initials: Y
authors.lastname: Rho
authors.forename: Young Duk
authors.initials: YD
authors.lastname: Suh
authors.forename: Hyung Jin
authors.initials: HJ
authors.lastname: Sung
authors.forename: Seung Hwan
authors.initials: SH
authors.lastname: Ko