Nanotube Surface Arrays: Weaving, Bending, and Assembling on Patterned Silicon

Tsukruk, Vladimir V.; Ko, Hyunhyub; Peleshanko, Sergiy

doi:10.1103/physrevlett.92.065502

Cited by 115 publications

(109 citation statements)

References 35 publications

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“…3 d-f ). Surprisingly, although NH 2 -SAMs were the focus of previous studies (24)(25)(26), MHA shows a higher tendency than AUT to assemble and surfaceconfine SWNTs.…”

Section: C)mentioning

confidence: 99%

“…One promising approach to overcoming these limitations is to use patterned chemical templates to assemble SWNTs from solutions. For example, SWNTs have been successfully positioned along straight line features comprised of amine-terminated self-assembled monolayers (SAMs) (9,(24)(25)(26)(27). Thus far, however, no one has demonstrated the ability to simultaneously control the position, shape, and linkage of SWNTs on the sub-m scale.…”

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confidence: 99%

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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.

212

193

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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...

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“…3 d-f ). Surprisingly, although NH 2 -SAMs were the focus of previous studies (24)(25)(26), MHA shows a higher tendency than AUT to assemble and surfaceconfine SWNTs.…”

Section: C)mentioning

confidence: 99%

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.

212

193

View full text Add to dashboard Cite

show abstract

“…Solid particle clustering was further quantified by alternative mechanisms dictated by hydrodynamics of the liquid phase (Kondic and Murisic, 2008). Capillary-induced convection provides a mechanism to organize suspended particles that range from nanometers to micrometers (Maillard et al, 2001;Small et al, 2006) and has been used to optimize ink jet printing and to create self-assembling micro and nanostructures (Dufresne et al, 2003;Tsukruk et al, 2004), and in understanding the crystalline patterns that form following drying droplets of DNA which are stretched and subsequently deposited for gene expression profiling (Smalyukh et al, 2006). Additionally, the impact of Marangoni (surface tension) gradients at the drop interface has been shown to reverse the formation of the "coffee-ring" deposits (Hu and Larson, 2006).…”

Section: Microcapsule Clusteringmentioning

confidence: 99%

Efficacious Considerations for the Design of Diffusion Controlled Pesticide Release Formulations

Cryer¹

2011

Pesticides - Formulations, Effects, Fate

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“…A critical step to obtain these practical devices is to deposit well-organized and highly aligned CNTs in desired locations. Recently, researchers have developed a number of methods to align CNTs: using moving fluids to organize nanotubes (S. Li et al, 2007), introducing gas flows in reactors or channels (Liu et al, 2009), withdrawing microfluidic channels from solutions (Tsukruk et al, 2004), spin coating nanotube dispersions with controlled speeds (LeMieux et al, 2008;Roberts et al, 2009), and magnetic capturing of nanotubes (Shim et al, 2009). However, many of these techniques have limitations and restrictions because they require either intensive preparation processes or assisting materials with special properties.…”

Section: Introductionmentioning

confidence: 99%