Strong Carbon‐Nanotube Fibers Spun from Long Carbon‐Nanotube Arrays

Zhang, Xiefei; Li, Qingwen; Tu, Yuan‐Kuang; Yuan, Li; Coulter, J. Y.; Zheng, Lianxi; Zhao, Yaohua; Jia, Q. X.; Peterson, D. E.; Zhu, Yuntian

doi:10.1002/smll.200600368

Cited by 375 publications

(243 citation statements)

References 28 publications

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“…Introducing twisting 15 , tension 17,18 or liquid shrinking during drawing 16,19 aligns and/or compacts the CNTs. Post treatment of twisting led to 1.9 GPa for s b , 7% for d and 4.1 Â 10 2 S cm À 1 for k 20 , but that of twistless rubbing resulted in a porous structure in the fibre 21 . The third method is spinning from a CNT aerogel formed in a high-temperature reactor [22][23][24] .…”

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confidence: 98%

High-strength carbon nanotube fibre-like ribbon with high ductility and high electrical conductivity

et al. 2014

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Macroscopic fibres made up of carbon nanotubes exhibit properties far below theoretical predictions and even much lower than those for conventional carbon fibres. Here we report improvements of mechanical and electrical properties by more than one order of magnitude by pressurized rolling. Our carbon nanotubes self-assemble to a hollow macroscopic cylinder in a tube reactor operated at high temperature and then condense in water or ethanol to form a fibre, which is continually spooled in an open-air environment. This initial fibre is densified by rolling under pressure, leading to a combination of high tensile strength (3.76-5.53 GPa), high tensile ductility (8-13%) and high electrical conductivity ((1.82-2.24) Â 10 4 S cm À 1 ). Our study therefore demonstrates strategies for future performance maximization and the very considerable potential of carbon nanotube assemblies for high-end uses.

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confidence: 98%

High-strength carbon nanotube fibre-like ribbon with high ductility and high electrical conductivity

et al. 2014

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“…In addition, their high thermal and electrical conductivities [2] render CNTs potential to impart multifunctionalities to the composites for applications such as electromagnetic wave absorption, in situ monitoring of structures, lightening-strike prevention, and heat dissipation. The challenge is how to obtain well-dispersed and high volume fractions of long and straight CNTs in the composite for high performance, and how to develop a scalable technology for industrial production.…”

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confidence: 99%

“…Due to their high-purity, high-quality and ordered structure, the superaligned CNT arrays can be converted into continuous fibers or sheets in the dry state [2,10,11,[14][15][16][17][18]. These fibers and sheets, within which the nanotubes possess a high degree of alignment, have also been incorporated into polymer matrices to make strong CNT/polymer composite fibers [19][20][21].…”

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confidence: 99%

Ultrastrong, Stiff and Multifunctional Carbon Nanotube Composites

Wang

Yong

et al. 2012

Materials Research Letters

137

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“…In addition, longer CNTs in the fibers play an important role in improving the performance of fibers. Zhang et al [177] prepared high strength CNT fibers from ultralong (1 mm) arrays. The tensile strength of fibers can reach to 3.3 GPa since long CNTs lead to enhanced friction forces between CNTs and decrease the number of junctions.…”

Section: Fabrication Of Cnt Fibersmentioning

confidence: 99%

Advanced carbon materials for flexible and wearable sensors

et al. 2017

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Flexible and wearable sensors have drawn extensive concern due to their wide potential applications in wearable electronics and intelligent robots. Flexible sensors with high sensitivity, good flexibility, and excellent stability are highly desirable for monitoring human biomedical signals, movements and the environment. The active materials and the device structures are the keys to achieve high performance. Carbon nanomaterials, including carbon nanotubes (CNTs), graphene, carbon black and carbon nanofibers, are one of the most commonly used active materials for the fabrication of high-performance flexible sensors due to their superior properties. Especially, CNTs and graphene can be assembled into various multi-scaled macroscopic structures, including one dimensional fibers, two dimensional films and three dimensional architectures, endowing the facile design of flexible sensors for wide practical applications. In addition, the hybrid structured carbon materials derived from natural bio-materials also showed a bright prospect for applications in flexible sensors. This review provides a comprehensive presentation of flexible and wearable sensors based on the above various carbon materials. Following a brief introduction of flexible sensors and carbon materials, the fundamentals of typical flexible sensors, such as strain sensors, pressure sensors, temperature sensors and humidity sensors, are presented. Then, the latest progress of flexible sensors based on carbon materials, including the fabrication processes, performance and applications, are summarized. Finally, the remaining major challenges of carbon-based flexible electronics are discussed and the future research directions are proposed. [56,57], have been used as the active components for the fabrication of flexible sensors. Among these materials, metal NPs can be used to fabricate flexible sensors with high sensitivity, but the sensing range and stretchability of these sensors are limited [58]. Besides, due to the limited chemical stability and reproducibility of metal nanowires, it is challenging to fabricate stable sensors using metal nanowires [10]. Similarly, conductive polymers with poor stability and conductivity are also difficult to be used for the fabrication of high-performance sensors [59]. In contrast, carbon materials are one of the most commonly investigated materials, especially CNTs and graphene (including graphene oxide (GO) and reduced graphene oxide (rGO)), due to their remarkable mechanical, electrical and thermal properties. To implement macroscopic applications, CNTs and graphene with superior properties in microscopic level should be converted into macroscopic functional assemblies, such as one dimensional (1D) fibers or yarns [60,61], two dimensional (2D) films or sheets [62,63], three dimensional (3D) architectures [64][65][66] (Fig. 1). The multi-scaled macroscopic carbon nanomaterials endow the flexible sensors with high sensitivity, excellent flexibility and good stability as well as desired configurations. Also, lo...

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Strong Carbon‐Nanotube Fibers Spun from Long Carbon‐Nanotube Arrays

Cited by 375 publications

References 28 publications

High-strength carbon nanotube fibre-like ribbon with high ductility and high electrical conductivity

High-strength carbon nanotube fibre-like ribbon with high ductility and high electrical conductivity

Ultrastrong, Stiff and Multifunctional Carbon Nanotube Composites

Advanced carbon materials for flexible and wearable sensors

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