PatentDOI
Fabrication and application of nanofiber ribbons and sheets and twisted and non-twisted nanofiber yarns
Mei Zhang,Shaoli Fang,Ray H. Baughman,Anvar A. Zakhidov,Kenneth Ross Atkinson,Ali E. Aliev,Sergey Li,Chris Williams +7 more
TLDR
In this article, the authors describe the properties and properties of carbon nanotube yarns, ribbons, and sheets, including extreme toughness, resistance to failure at knots, high electrical and thermal conductivities, high absorption of energy that occurs reversibly, up to 13% strain-to-failure compared with other fibers with similar toughness, retention of strength even when heated in air at 450°C for one hour, and very high radiation and UV resistance, even when irradiated in air.Abstract:
The present invention is directed to nanofiber yarns, ribbons, and sheets; to methods of making said yarns, ribbons, and sheets; and to applications of said yarns, ribbons, and sheets. In some embodiments, the nanotube yarns, ribbons, and sheets comprise carbon nanotubes. Particularly, such carbon nanotube yarns of the present invention provide unique properties and property combinations such as extreme toughness, resistance to failure at knots, high electrical and thermal conductivities, high absorption of energy that occurs reversibly, up to 13% strain-to-failure compared with the few percent strain-to-failure of other fibers with similar toughness, very high resistance to creep, retention of strength even when heated in air at 450°C for one hour, and very high radiation and UV resistance, even when irradiated in air. Furthermore these nanotube yarns can be spun as one micron diameter yarns and plied at will to make two-fold, four-fold, and higher fold yarns. Additional embodiments provide for the spinning of nanofiber sheets having arbitrarily large widths. In still additional embodiments, the present invention is directed to applications and devices that utilize and/or comprise the nanofiber yarns, ribbons, and sheets of the present invention.read more
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Apparatus and associated methods
TL;DR: In this paper, an apparatus including a plurality of adjacent repeated base units, each base unit formed from an active electrode of first, second, third and third touch sensor arrays, each including an active electrodes connected to a respective common terminal of the touch sensor array, where a swipe touch gesture applied to two or more adjacent active electrodes of the apparatus generates signalling at the respective common terminals of the corresponding touch sensors.
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John A. Rogers,Dae-Hyeong Kim +1 more
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Bamboo-inspired nanostructure design for flexible, foldable and twistable energy storage devices
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Journal ArticleDOI
Thermal transport in MWCNT sheets and yarns
Ali E. Aliev,Csaba Guthy,Mei Zhang,Shaoli Fang,Anvar A. Zakhidov,John E. Fischer,Ray H. Baughman +6 more
TL;DR: In this paper, laser flash and self-heating 3 ω techniques were employed to determine the anisotropic thermal conductivity and thermal diffusivity of a highly oriented, free-standing multiwalled carbon nanotube (MWCNT) sheet and a yarn drawn from a sidewall of the MWCNT forest grown by chemical-vapor deposition.
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Journal ArticleDOI
Carbon Nanotubes--the Route Toward Applications
TL;DR: Many potential applications have been proposed for carbon nanotubes, including conductive and high-strength composites; energy storage and energy conversion devices; sensors; field emission displays and radiation sources; hydrogen storage media; and nanometer-sized semiconductor devices, probes, and interconnects.
Journal ArticleDOI
Self-Oriented Regular Arrays of Carbon Nanotubes and Their Field Emission Properties
Shou-Shan Fan,Michael Chapline,Nathan R. Franklin,Thomas W. Tombler,Alan M. Cassell,Hongjie Dai +5 more
TL;DR: The synthesis of massive arrays of monodispersed carbon nanotubes that are self-oriented on patterned porous silicon and plain silicon substrates is reported and the mechanisms of nanotube growth and self-orientation are elucidated.
Journal ArticleDOI
Carbon Nanotube Actuators
Ray H. Baughman,Changxing Cui,Anvar A. Zakhidov,Zafar Iqbal,Joseph N. Barisci,G.M. Spinks,Gordon G. Wallace,Alberto Mazzoldi,Danillo de Rossi,Andrew G. Rinzler,Oliver Jaschinski,S. Roth,Miklos Kertesz +12 more
TL;DR: Predictions based on measurements suggest that actuators using optimized nanotube sheets may eventually provide substantially higher work densities per cycle than any previously known technology.
Journal ArticleDOI
Macroscopic Fibers and Ribbons of Oriented Carbon Nanotubes
Brigitte Vigolo,Alain Pénicaud,Claude Coulon,Cédric Sauder,René Pailler,Catherine Journet,P. Bernier,Philippe Poulin +7 more
TL;DR: A simple method was used to assemble single-walled carbon nanotubes into indefinitely long ribbons and fibers, and the obtained elastic modulus is 10 times higher than the modulus of high-quality bucky paper.
Journal ArticleDOI
Multifunctional Carbon Nanotube Yarns by Downsizing an Ancient Technology
TL;DR: By introducing twist during spinning of multiwalled carbon nanotubes from nanotube forests to make multi-ply, torque-stabilized yarns, this work achieves yarn strengths greater than 460 megapascals, nearly as tough as fibers used for bulletproof vests.