title: Acoustic-assisted assembly of an individual monochromatic ultralong carbon nanotube for high on-current transistors.
abstract: Great effort has been applied to scientific research on the controllable synthesis of carbon nanotubes (CNTs) with high semiconducting selectivity or high areal density toward the macroscale applications of high-performance carbon-based electronics. However, the key issue of compatibility between these two requirements for CNTs remains a challenge, blocking the expected performance boost of CNT devices. We report an in situ acoustic-assisted assembly of high-density monochromatic CNT tangles (m-CNT-Ts), consisting of one self-entangled CNT with a length of up to 100 mm and consistent chirality. On the basis of a minimum consumed energy model with a Strouhal number of approximately 0.3, the scale could be controlled within the range of 1 × 104to 3 × 104μm2or even a larger range. Transistors fabricated with one m-CNT-T showed an on/off ratio of 103to 106with 4-mA on-state current, which is also the highest on-state current recorded so far for single CNT-based transistors. This acoustic-assisted assembly of chiral-consistent m-CNT-Ts will provide new opportunities for the fabrication of high-performance electronics based on perfect CNTs with high purity and high density.
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.; Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China.
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Zhu
authors.affiliation: Key Laboratory for the Physics and Chemistry of Nanodevices, Peking University, Beijing 100871, China.
authors.forename: Nan
authors.identifier: 0000-0001-9075-5738
authors.initials: N
authors.lastname: Wei
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.; Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China.
authors.forename: Huanhuan
authors.initials: H
authors.lastname: Xie
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.; Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA.
authors.forename: Rufan
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.; Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China.
authors.forename: Yunxiang
authors.initials: Y
authors.lastname: Bai
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.; Center for Nano and Micro Mechanics, Tsinghua University, Beijing 100084, China.
authors.forename: Chenxi
authors.initials: C
authors.lastname: Zhang
authors.affiliation: Key Laboratory for the Physics and Chemistry of Nanodevices, Peking University, Beijing 100871, China.
authors.forename: Sheng
authors.initials: S
authors.lastname: Wang
authors.affiliation: Key Laboratory for the Physics and Chemistry of Nanodevices, Peking University, Beijing 100871, China.
authors.forename: Lianmao
authors.initials: L
authors.lastname: Peng
authors.affiliation: Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, OH 44106, USA.; Institute of Advanced Materials for Nano-Bio Applications, School of Ophthalmology and Optometry, Wenzhou Medicine University, Wenzhou, Zhejiang 325027, China.
authors.forename: Liming
authors.initials: L
authors.lastname: Dai
authors.affiliation: Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Wei
keywords: Ultralong carbon nanotubes; acoustic-assisted; carbon nanotube tanges; carbon-based electronics; chirality; monochromatic