Directional Orientation of Carbon Nanotubes on Surfaces Using a Gas Flow Cell

Hu, Xin; Woolley, Adam T.

doi:10.1021/nl049192c

Cited by 103 publications

(64 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Carbon nanotubes can be attached to electrodes by direct growth [45], manual manipulation [46], random spreading [47], deposition in a dc current electric field [48], or gas flow [49]. Specially designed substrates are used for film formation of vertically oriented CNTs [50][51][52][53].…”

Section: Capacitance Properties Of Single-and Multi-walled Carbon Nanmentioning

confidence: 99%

Recent Progress on Electrochemical Capacitors Based on Carbon Nanotubes

Grądzka¹,

Winkler²

2018

Carbon Nanotubes - Recent Progress

View full text Add to dashboard Cite

This review is focused on the theoretical and practical aspects of electrochemical c a p a c i t o r sb a s e do nc a r b o nn a n o t u b e s .I np articular, recent improvements in the capacitance properties of the systems are discussed. In the first part, the charge storage mechanisms of the electrochemical capacitors are briefly described. The next part of the review is devoted to the capacitance properties of pristine single-and multi-walled carbon nanotubes. The major portion of the review is focused on the capacitance properties of modified carbon nanotubes. The electrochemical properties of nanotubes with boron, nitrogen, and other atoms incorporated into the carbon network structure as well as nanotubes modified with different functional groups are discussed. Special attention is paid to the composites of carbon nanotubes and conducting polymers, transition metal oxides, carbon nanostructures, and carbon gels. In all cases, the influences of different parameters such as porosity, structure of the electroactive layer, conductivity of the layer, nature of the heteroatoms, solvent and supporting electrolyte on the capacitance performance of hybrid materials are discussed. Finally, the capacitance properties of different systems containing carbon nanotubes are compared and summarized.

show abstract

Section: Capacitance Properties Of Single-and Multi-walled Carbon Nanmentioning

confidence: 99%

Recent Progress on Electrochemical Capacitors Based on Carbon Nanotubes

Grądzka¹,

Winkler²

2018

Carbon Nanotubes - Recent Progress

View full text Add to dashboard Cite

show abstract

“…This level of manipulation is limited to serial and therefore slow processes that span relatively short distances (100 m). Other assembly methods such as Langmuir-Blodgett techniques (13), external field assisted routes (14)(15)(16)(17)(18)(19), electrospinning (20), transfer printing (21), and DNA templates (22,23) also have been explored for nanotube assembly. These parallel methods address the speed limitation posed by conventional scanning probe techniques, but thus far are quite limited with respect to registration control and have demonstrated only coarse placement capabilities.…”

mentioning

confidence: 99%

Controlling the shape, orientation, and linkage of carbon nanotube features with nano affinity templates

Wang

Maspoch

Zou

et al. 2006

Proc. Natl. Acad. Sci. U.S.A.

211

197

View full text Add to dashboard Cite

Directed assembly of nanoscale building blocks such as singlewalled carbon nanotubes (SWNTs) into desired architectures is a major hurdle for a broad range of basic research and technological applications (e.g., electronic devices and sensors). Here we demonstrate a parallel assembly process that allows one to simultaneously position, shape, and link SWNTs with sub-100-nm resolution. Our method is based on the observation that SWNTs are strongly attracted to COOH-terminated self-assembled monolayers (COOH-SAMs) and that SWNTs with lengths greater than the dimensions of a COOH-SAM feature will align along the boundary between the COOH-SAM feature and a passivating CH3-terminated SAM. By using nanopatterned affinity templates of 16-mercaptohexadecanonic acid, passivated with 1-octadecanethiol, we have formed SWNT dot, ring, arc, letter, and even more sophisticated structured thin films and continuous ropes. Experiment and theory (Monte Carlo simulations) suggest that the COOH-SAMs localize the solvent carrying the nanotubes on the SAM features, and that van der Waals interactions between the tubes and the COOH-rich feature drive the assembly process. A mathematical relationship describing the geometrically weighted interactions between SWNTs and the two different SAMs required to overcome solvent-SWNT interactions and effect assembly is provided.self-assembly ͉ rings ͉ structured thin films ͉ Monte Carlo simulations S ingle-walled carbon nanotubes (SWNTs) show promise for applications ranging from ultra-small electronic and sensing devices to multifunctional materials (1). To date, a number of SWNT-based proof-of-concept devices (2-7) such as field effect transistors (2), field emission displays (7), and chemical sensors (3, 6) have been fabricated, and the integration of the nanotube materials in all cases relies on one's ability to control the placement, orientation, and shape of the nanotube components within the context of the device on the micrometer-to nanometer-length scale. Such positional control over large areas is extremely challenging and currently quite limited. Depending on the intended application, one wants to be able to pattern SWNTs as individual tubes (3, 4), small bundles (5), or thin films (6,8,9). Previous studies have shown that individual carbon nanotubes can be positioned (10), bent (11), and even welded (12) with nanometer accuracy by using scanning probe instruments. This level of manipulation is limited to serial and therefore slow processes that span relatively short distances (100 m). Other assembly methods such as Langmuir-Blodgett techniques (13), external field assisted routes (14-19), electrospinning (20), transfer printing (21), and DNA templates (22, 23) also have been explored for nanotube assembly. These parallel methods address the speed limitation posed by conventional scanning probe techniques, but thus far are quite limited with respect to registration control and have demonstrated only coarse placement capabilities. One promising approach to overcoming these limitations i...

show abstract

“…The flow simultaneously spreads the drops, dries them and aligns the nanotubes along the flow direction [76,77]. The method is simple and can be automated to cover wide areas simply by shifting the substrate.…”

Section: Gas Flowmentioning

confidence: 99%

Techniques of aligning carbon nanotubes

Iakoubovskii

2009

Open Physics

View full text Add to dashboard Cite

Abstract:This paper reviews major techniques of aligning carbon nanotubes, either during the growth or by the post-growth processing. A number of post-processing alignment techniques are discussed, which employ mechanical stretching, fracture, compression, friction, filtration, fiber drawing, gas flow, liquid crystals, Langmuir-Blodgett technique, acoustic, magnetic and electric fields. The suitability of those techniques to industrial applications is analyzed.

show abstract

Directional Orientation of Carbon Nanotubes on Surfaces Using a Gas Flow Cell

Cited by 103 publications

References 19 publications

Recent Progress on Electrochemical Capacitors Based on Carbon Nanotubes

Recent Progress on Electrochemical Capacitors Based on Carbon Nanotubes

Controlling the shape, orientation, and linkage of carbon nanotube features with nano affinity templates

Techniques of aligning carbon nanotubes

Contact Info

Product

Resources

About