title: Suspended, straightened carbon nanotube arrays by gel chapping.
abstract: We report large-scale self-assembly of suspended, straightened, single-walled carbon nanotubes (SWNTs) across regular TiO(2) gel islands. By coating a SWNT network on top of a pool of the TiO(2) colloid and inducing a rapid drying and chapping process, initially curled, random SWNTs can be straightened into aligned arrays and suspended across the island gaps. The suspended SWNT arrays were grafted by semiconducting or metallic nanoparticles, resulting in hybrid structures with tailored and neat morphology, and enhanced photoresponse. We further demonstrate these suspended SWNTs can sustain high speed gas blowing (up to 20 m per second) reversibly for hundreds of cycles, and detect gas velocity by the resistance change.
authors.affiliation: Department of Advanced Materials and Nanotechnology, College of Engineering, Peking University, Beijing 100871, PR China.
authors.forename: Chunyan
authors.initials: C
authors.lastname: Ji
authors.forename: Hongbian
authors.initials: H
authors.lastname: Li
authors.forename: Luhui
authors.initials: L
authors.lastname: Zhang
authors.forename: Yu
authors.initials: Y
authors.lastname: Liu
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Yi
authors.initials: Y
authors.lastname: Jia
authors.forename: Zhen
authors.initials: Z
authors.lastname: Li
authors.forename: Peixu
authors.initials: P
authors.lastname: Li
authors.forename: Enzheng
authors.initials: E
authors.lastname: Shi
authors.forename: Jinquan
authors.initials: J
authors.lastname: Wei
authors.forename: Kunlin
authors.initials: K
authors.lastname: Wang
authors.forename: Hongwei
authors.initials: H
authors.lastname: Zhu
authors.forename: Dehai
authors.initials: D
authors.lastname: Wu
authors.forename: Anyuan
authors.initials: A
authors.lastname: Cao