Carbon Nanotube Thin Films: Fabrication, Properties, and Applications

Hu, Liangbing; Hecht, David S.; Grüner, G.

doi:10.1021/cr9002962

Cited by 911 publications

(775 citation statements)

References 413 publications

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“…From the data it is also clear that for a fixed volume fraction, networks composed of high aspect ratio rods have a higher connectivity when compared to lower aspect ratio rods. This is an interesting feature, which is in accordance with experimental observations that films made of high aspect ratio bundles present a lower overall resistivity [6].…”

Section: Resultssupporting

confidence: 90%

“…The density of a specific CNT film can also be expressed in terms of its volumetric fraction occupied by nanotubes. The volume fraction of a typical laboratory produced nanotube film is related to the volume of CNT solution used for deposition [5,6], and can be directly measured. In a computer simulation, the volume fraction depends on the total number of rods distributed inside the box, and is calculated directly for each configuration generated.…”

Section: Random Network Of Finite Rodsmentioning

confidence: 99%

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Electronic transport on carbon nanotube networks: A multiscale computational approach

Pereira

Ferreira

2011

Nano Communication Networks

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Carbon nanotube networks are one of the candidate materials to function as malleable, transparent, conducting films, with the technologically promising application of being used as flexible electronic displays. Nanotubes disorderly distributed in a film offers many possible paths for charge carriers to travel across the entire system, but the theoretical description of how this charge transport occurs is rather challenging for involving a combination of intrinsic nanotube properties with network morphology aspects. Here we attempt to describe the transport properties of such films in two different length scales. Firstly, from a purely macroscopic point of view we carry out a geometrical analysis that shows how the network connectivity depends on the nanotube concentration and on their respective aspect ratio. Once this is done, we are able to calculate the resistivity of a heavily disordered networked film. Comparison with experiment offers us a way to infer about the junction resistance between neighbouring nanotubes. Furthermore, in order to guide the frantic search for high-conductivity films of nanotube networks, we turn to the microscopic scale where we have developed a computationally efficient way for calculating the ballistic transport across these networks. While the ballistic transport is probably not capable of describing the observed transport properties of these films, it is undoubtedly useful in establishing an upper value for their conductivity. This can serve as a guideline in how much room there is for improving the conductivity of such networks.

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Section: Resultssupporting

confidence: 90%

Section: Random Network Of Finite Rodsmentioning

confidence: 99%

Electronic transport on carbon nanotube networks: A multiscale computational approach

Pereira

Ferreira

2011

Nano Communication Networks

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“…They possess excellent mechanical flexibility and thermal stability required for our 3D fabrication process 14, 15. Finally, their solution processability is important for future low‐cost printing process 16, 17…”

Section: Introductionmentioning

confidence: 99%

Shape‐Controlled, Self‐Wrapped Carbon Nanotube 3D Electronics

Wang

Tee

et al. 2015

Advanced Science

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The mechanical flexibility and structural softness of ultrathin devices based on organic thin films and low‐dimensional nanomaterials have enabled a wide range of applications including flexible display, artificial skin, and health monitoring devices. However, both living systems and inanimate systems that are encountered in daily lives are all 3D. It is therefore desirable to either create freestanding electronics in a 3D form or to incorporate electronics onto 3D objects. Here, a technique is reported to utilize shape‐memory polymers together with carbon nanotube flexible electronics to achieve this goal. Temperature‐assisted shape control of these freestanding electronics in a programmable manner is demonstrated, with theoretical analysis for understanding the shape evolution. The shape control process can be executed with prepatterned heaters, desirable for 3D shape formation in an enclosed environment. The incorporation of carbon nanotube transistors, gas sensors, temperature sensors, and memory devices that are capable of self‐wrapping onto any irregular shaped‐objects without degradations in device performance is demonstrated.

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“…Up to now, CNTs have been widely used in biosensor designs and nanoscale electronic devices owing to their ability to mediate electron-transfer reactions with enzymes and other biomolecules [10][11][12]. Moreover, CNTs provide an extremely large surface area for biomolecular conjugation and subsequent signal amplification [13].…”

Section: Introductionmentioning

confidence: 99%

Assembly of carbon nanotubes on a nanoporous gold electrode for acetylcholinesterase biosensor design

Ding

Zhang

Jia

et al. 2014

Sensors and Actuators B: Chemical

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a b s t r a c tAn electrochemical sensing platform based on assembly of carbon nanotubes on a nanoporous gold electrode is described for highly sensitive detection of organophosphate pesticides. The nanoporous gold film (NPG) electrode is fabricated by an alloying/dealloying process, which possess high electroactive surface area and is an excellent substrate for sensor design. The NPG functionalized with cysteamine allows the immobilization of carbon nanotubes on the electrode with the self-assembly technique. The carboxylated carbon nanotubes are further linkered with acetylcholinesterase (AChE) for amperometric sensing of pesticides. The immobilized AChE, as a model, shows excellent activity to its substrate and allows a quantitative measurement of organophosphate pesticides. Under the optimal experimental conditions, the inhibition of malathion is proportional to its concentration in the range of 0.001-0.5 g mL −1 with a detection limit of 0.5 ng mL −1 . The proposed method shows good reproducibility and high stability, which provides a new avenue for electrochemical biosensor design.

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Carbon Nanotube Thin Films: Fabrication, Properties, and Applications

Cited by 911 publications

References 413 publications

Electronic transport on carbon nanotube networks: A multiscale computational approach

Electronic transport on carbon nanotube networks: A multiscale computational approach

Shape‐Controlled, Self‐Wrapped Carbon Nanotube 3D Electronics

Assembly of carbon nanotubes on a nanoporous gold electrode for acetylcholinesterase biosensor design

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