Mobility of Carbon Nanotubes in High Electric Fields

Koratkar, Nikhil; Modi, Ashish; J, Kim; Bq, Wei; Vajtai, Róbert; Talapatra, Saikat; Pm, Ajayan

doi:10.1166/jnn.2004.051

Cited by 10 publications

(7 citation statements)

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“…These observations may lead to novel electromechanical applications for CNTs. 85 Mechanically, CNTs are currently the strongest known fibers because the carbon-carbon bond observed in graphite is one of the strongest in nature. Elastic properties of CNTs can be obtained from experiment by assuming them structural members.…”

Section: Properties Of Carbon Nanotubesmentioning

confidence: 99%

Carbon Nanotube-Based Sensors

Sinha¹,

Ma²,

Yeow³

2006

j nanosci nanotechnol

460

230

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Sensors continue to make significant impact in everyday life. There has been a strong demand for producing highly selective, sensitive, responsive, and cost effective sensors. As a result, research emphasis is on developing new sensing materials and technologies. Carbon nanotubes (CNTs) have many distinct properties that may be exploited to develop next generation of sensors. This manuscript reviews the distinct physical, electronic, and mechanical properties of CNTs. The main thrust of this review is to highlight the present and future research and development work in the area of carbon nanotube sensors for real-world applications. The technical challenges associated with CNT-based sensors, which remain to be fully addressed, have also been outlined at the end of the manuscript. This review aims to act as a reference source for researchers to help them in developing new applications of CNT-based sensors.

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Section: Properties Of Carbon Nanotubesmentioning

confidence: 99%

Carbon Nanotube-Based Sensors

Sinha¹,

Ma²,

Yeow³

2006

j nanosci nanotechnol

460

230

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“…In the case of applying DC electrical field, however, the unidirectional alignment of CNFs does not always occur because CNFs are charged in suspension and thus may migrate to one electrode (16,17) .…”

Section: In-situ Observation Of Alignment Processmentioning

confidence: 99%

Microscopic Structure Control of Carbon Nanofiller/Epoxy Composite by Using AC Electrical Field and the Effect on Physical Properties

Shimamura

Chiba²,

Okuda

et al. 2010

JMMP

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It is well known that carbon nanofillers (CNFs) enhance the stiffness, electrical conductivity and thermal conductivity of polymers. Alignment of carbon nanofillers in polymer is expected to increase the performances in the aligned direction. Several papers have reported that applying AC electrical field to liquid suspension including CNFs make CNFs align in the electrical field direction. In this paper, the microscopic structure of carbon nanofiller/epoxy composites was controlled by using AC electrical field, i.e. carbon nanofillers were aligned unidirectionally in resin. The alignment of CNFs was in-situ observed during fabrication by using an optical microscope, and the effects of applied voltage, frequency and the weight fraction of CNFs on microscopic structure were investigated. Furthermore, thermal conductivity, electrical conductivity and mechanical properties of composites were measured. The results show that CNFs in uncured epoxy resin align in the AC field direction and form a chain-like network, and that the applied voltage and weight fraction affect the morphology of the chain-like network. Unidirectional alignment enhances the thermal and electrical conductivities, and affects mechanical properties.

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“…These mechanisms were observed to promote alignment in solid CNTs and in CNTs suspended in liquids [4,[17][18][19]. A bottom layer consisting mainly of silicone oil where the shear stress is significantly decreased is therefore obtained.…”

Section: Electrorheologial Properties Of Nano Laden Suspensionsmentioning

confidence: 99%

“…Researchers are especially keen on nanomaterials as sensors and actuators. Recent results have shown that carbon nanotubes possess significant potential as solidstate actuators with mechanical response to applied electric fields [1][2][3][4]. The discovery of carbon nanotubes (CNT), carbon nanofibers (CNF) and most recently the development of a variety of nanowire materials (NW) [5][6][7], including Si, Ge, and GaAs, is playing a key role in the progress of exciting research in nanoreinforced systems given their remarkable electrical and mechanical properties.…”

Section: Introductionmentioning

confidence: 99%