Large-scale directed assembly of single-walled carbon nanotube devices by alternating current coupling dielectrophoresis

Zheng, Fuzhong; Yang, Xing; Wu, Ying; Zhou, Zhaoying; Liu, Zhongbin

doi:10.1016/j.carbon.2017.08.037

Cited by 9 publications

(7 citation statements)

References 36 publications

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“…Another typical application of the DEP phenomenon is aligning and assembling 1D materials such as carbon nanotubes (CNTs), − metallic nanowires, − gallium arsenide (GaAs) nanowires, gallium nitride (GaN) nanowires, , indium arsenide (InAs) nanowires, silicon nanowires, − manganese dioxide (MnO 2 ) nanowires, , nanofibers, and biofunctionalized nanowires . Unlike zero-dimensional (0D) nanoparticles, 1D materials experience an anisotropic DEP force, depending on their orientation in the electric field.…”

Section: Electric Field-directed Assemblymentioning

confidence: 99%

Directed Assembly of Nanomaterials for Making Nanoscale Devices and Structures: Mechanisms and Applications

2022

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Nanofabrication has been utilized to manufacture one-, two-, and threedimensional functional nanostructures for applications such as electronics, sensors, and photonic devices. Although conventional silicon-based nanofabrication (top-down approach) has developed into a technique with extremely high precision and integration density, nanofabrication based on directed assembly (bottom-up approach) is attracting more interest recently owing to its low cost and the advantages of additive manufacturing. Directed assembly is a process that utilizes external fields to directly interact with nanoelements (nanoparticles, 2D nanomaterials, nanotubes, nanowires, etc.) and drive the nanoelements to site-selectively assemble in patterned areas on substrates to form functional structures. Directed assembly processes can be divided into four different categories depending on the external fields: electric field-directed assembly, fluidic flowdirected assembly, magnetic field-directed assembly, and optical field-directed assembly. In this review, we summarize recent progress utilizing these four processes and address how these directed assembly processes harness the external fields, the underlying mechanism of how the external fields interact with the nanoelements, and the advantages and drawbacks of utilizing each method. Finally, we discuss applications made using directed assembly and provide a perspective on the future developments and challenges.

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Section: Electric Field-directed Assemblymentioning

confidence: 99%

Directed Assembly of Nanomaterials for Making Nanoscale Devices and Structures: Mechanisms and Applications

2022

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“…Zheng et al were able to deposit CNTs with DEP on a flexible polyimide thin film. [169] This allowed them to flex the substrate during DEP deposition, which then they could relax afterward to straighten the bridging CNTs.…”

Section: Substrate Effectsmentioning

confidence: 99%

Nanoscale Patterning of Carbon Nanotubes: Techniques, Applications, and Future

Corletto

Shapter

2020

Advanced Science

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Carbon nanotube (CNT) devices and electronics are achieving maturity and directly competing or surpassing devices that use conventional materials. CNTs have demonstrated ballistic conduction, minimal scaling effects, high current capacity, low power requirements, and excellent optical/photonic properties; making them the ideal candidate for a new material to replace conventional materials in next-generation electronic and photonic systems. CNTs also demonstrate high stability and flexibility, allowing them to be used in flexible, printable, and/or biocompatible electronics. However, a major challenge to fully commercialize these devices is the scalable placement of CNTs into desired micro/nanopatterns and architectures to translate the superior properties of CNTs into macroscale devices. Precise and high throughput patterning becomes increasingly difficult at nanoscale resolution, but it is essential to fully realize the benefits of CNTs. The relatively long, high aspect ratio structures of CNTs must be preserved to maintain their functionalities, consequently making them more difficult to pattern than conventional materials like metals and polymers. This review comprehensively explores the recent development of innovative CNT patterning techniques with nanoscale lateral resolution. Each technique is critically analyzed and applications for the nanoscale-resolution approaches are demonstrated. Promising techniques and the challenges ahead for future devices and applications are discussed.

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“…A self‐limiting direct assembly of individual SWNTs using DEP on a pair of electrodes was reported recently by Zheng et al. [180]. DEP methods are not suitable for large‐scale design as disordered SWNTs are normally produced.…”

Section: Swnt Dep Applicationsmentioning

confidence: 99%

Carbon nanotube dielectrophoresis: Theory and applications

2020

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Carbon nanotubes (CNTs) are one of the most extensively studied nanomaterials in the 21st century. Since their discovery in 1991, many studies have been reported advancing our knowledge in terms of their structure, properties, synthesis, and applications. CNTs exhibit unique electrothermal and conductive properties which, combined with their mechanical strength, have led to tremendous attention of CNTs as a nanoscale material in the past two decades. To introduce the various types of CNTs, we first provide basic information on their structure followed by some intriguing properties and a brief overview of synthesis methods. Although impressive advances have been demonstrated with CNTs, critical applications require purification, positioning, and separation to yield desired properties and functional elements. Here, we review a versatile technique to manipulate CNTs based on their dielectric properties, namely dielectrophoresis (DEP). A detailed discussion on the DEP aspects of CNTs including the theory and various technical microfluidic realizations is provided. Various advancements in DEP‐based manipulations of single‐walled and multiwalled CNTs are also discussed with special emphasis on applications involving separation, purification, sensing, and nanofabrication.

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Large-scale directed assembly of single-walled carbon nanotube devices by alternating current coupling dielectrophoresis

Cited by 9 publications

References 36 publications

Directed Assembly of Nanomaterials for Making Nanoscale Devices and Structures: Mechanisms and Applications

Directed Assembly of Nanomaterials for Making Nanoscale Devices and Structures: Mechanisms and Applications

Nanoscale Patterning of Carbon Nanotubes: Techniques, Applications, and Future

Carbon nanotube dielectrophoresis: Theory and applications

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