Journal ArticleDOI
Ultrahigh density alignment of carbon nanotube arrays by dielectrophoresis.
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TLDR
The ultrahigh density alignment of aligned single-walled carbon nanotube (SWNT) two-dimensional arrays via AC dielectrophoresis using high-quality surfactant-free and stable SWNT solutions will have important implications in fabricating high- quality devices for digital and analog electronics.Abstract:
We report ultrahigh density assembly of aligned single-walled carbon nanotube (SWNT) two-dimensional arrays via AC dielectrophoresis using high-quality surfactant-free and stable SWNT solutions. After optimization of frequency and trapping time, we can reproducibly control the linear density of the SWNT between prefabricated electrodes from 0.5 SWNT/μm to more than 30 SWNT/μm by tuning the concentration of the nanotubes in the solution. Our maximum density of 30 SWNT/μm is the highest for aligned arrays via any solution processing technique reported so far. Further increase of SWNT concentration results in a dense array with multiple layers. We discuss how the orientation and density of the nanotubes vary with concentrations and channel lengths. Electrical measurement data show that the densely packed aligned arrays have low sheet resistances. Selective removal of metallic SWNTs via controlled electrical breakdown produced field-effect transistors with high current on−off ratio. Ultrahigh density alignmen...read more
Citations
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Journal ArticleDOI
Large‐Area, Electronically Monodisperse, Aligned Single‐Walled Carbon Nanotube Thin Films Fabricated by Evaporation‐Driven Self‐Assembly
Tejas A. Shastry,Jung Woo T. Seo,Josue J. Lopez,Heather N. Arnold,Jacob Z. Kelter,Vinod K. Sangwan,Lincoln J. Lauhon,Tobin J. Marks,Mark C. Hersam +8 more
TL;DR: Large-area, aligned single-walled carbon nanotube (SWCNT) thin films are fabricated from electronically monodisperse SWCNT solutions by evaporation-driven self-assembly with precise control over the thin film growth geometry to possess highly anisotropic electrical and optical properties that are well suited for transparent conductor applications.
Journal ArticleDOI
Carbon-Nanotube-Based Electrical Conductors: Fabrication, Optimization, and Applications
Songlin Zhang,Nam Nguyen,Branden E. Leonhardt,Claire Jolowsky,Ayou Hao,Jin Gyu Park,Richard Liang +6 more
TL;DR: The potential of carbon-based nanomaterials to replace conventional conductive materials, such as copper and aluminum, has been highlighted by Endo et al. as discussed by the authors, who presented the forecast on the present, near future, and long term applications of CNTs in various fields.
Journal ArticleDOI
Fringing-field dielectrophoretic assembly of ultrahigh-density semiconducting nanotube arrays with a self-limited pitch
TL;DR: A method in which the alternating voltage-fringing electric field formed between surface microelectrodes and the substrate is utilized to assemble semiconducting nanotubes into well-aligned, ultrahigh-density and submonolayered arrays, with a consistent pitch as small as 21±6 nm determined by a self-limiting mechanism, based on the unique field focusing and screening effects of the fringing field.
Journal ArticleDOI
Printed Diodes: Materials Processing, Fabrication, and Applications.
TL;DR: Considering the unmatched production scalability of printed diodes and their intrinsic suitability for flexible and wearable applications, significant improvement in performance and intensive research in development and applications of the printed dioes will continuously progress in the future.
Journal ArticleDOI
Enhanced water flux in vertically aligned carbon nanotube arrays and polyethersulfone composite membranes
Shaoyun Li,Gaomin Liao,Zhipeng Liu,Yuanyuan Pan,Qiang Wu,Yuyan Weng,Xiaohua Zhang,Zhaohui Yang,Ophelia Kwan Chui Tsui +8 more
TL;DR: In this article, a pre-aligned multi-walled carbon nanotube (MWCNT) array and polyethersulfone (PES) matrix is used to achieve high-flux ultra-filtration.
References
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Book
Physical properties of carbon nanotubes
TL;DR: In this paper, an introductory textbook for graduate students and researchers from various fields of science who wish to learn about carbon nanotubes is presented, focusing on the basic principles behind the physical properties and giving the background necessary to understand the recent developments.
Journal ArticleDOI
Ballistic carbon nanotube field-effect transistors
TL;DR: It is shown that contacting semiconducting single-walled nanotubes by palladium, a noble metal with high work function and good wetting interactions with nanotube, greatly reduces or eliminates the barriers for transport through the valence band of nanot tubes.
Journal ArticleDOI
Carbon-based electronics.
TL;DR: This work reviews the progress that has been made with carbon nanotubes and, more recently, graphene layers and nanoribbons and suggests that it could be possible to make both electronic and optoelectronic devices from the same material.
Journal ArticleDOI
Extraordinary Mobility in Semiconducting Carbon Nanotubes
TL;DR: In this article, a carbon nanotube transistors with channel lengths exceeding 300 microns have been fabricated, where the carrier transport is diffusive and the channel resistance dominates the transport.
Journal ArticleDOI
High-performance electronics using dense, perfectly aligned arrays of single-walled carbon nanotubes
Seong Jun Kang,Coskun Kocabas,Taner Ozel,Moonsub Shim,N. Pimparkar,Muhammad A. Alam,Slava V. Rotkin,John A. Rogers +7 more
TL;DR: Dense, perfectly aligned arrays of long, perfectly linear SWNTs are reported as an effective thin-film semiconductor suitable for integration into transistors and other classes of electronic devices, representing a route to large-scale integrated nanotube electronics.