Multilayer and functional coatings on carbon nanotubes using atomic layer deposition

Herrmann, Cari F.; Fabreguette, F.; Finch, Dudley S.; Geiss, R.; George, Steven M.

doi:10.1063/1.2053358

Cited by 94 publications

(68 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ALD has been used by a few research groups to coat CNTs and CNFs. [99][100][101] ALD is particularly suited for coating large area and high aspect ratio structures because it allows atomic layer thickness control over an entire surface by a sequence of self-limiting reactions. Lee et al was first to report coating CNFs via ALD as they successfully coated bamboo-type nanofibers with Al 2 O 3 using trimethylaluminum and distilled water.…”

Section: Atomic Layer Depositionmentioning

confidence: 99%

Surface characterization and functionalization of carbon nanofibers

Klein¹,

Melechko²,

McKnight³

et al. 2008

Journal of Applied Physics

166

View full text Add to dashboard Cite

Carbon nanofibers are high-aspect ratio graphitic materials that have been investigated for numerous applications due to their unique physical properties such as high strength, low density, metallic conductivity, tunable morphology, chemical and environmental stabilities, as well as compatibility with organochemical modification. Surface studies are extremely important for nanomaterials because not only is the surface structurally and chemically quite different from the bulk, but its properties tend to dominate at the nanoscale due to the drastically increased surface-to-volume ratio. This review surveys recent developments in surface analysis techniques used to characterize the surface structure and chemistry of carbon nanofibers and related carbon materials. These techniques include scanning probe microscopy, infrared and electron spectroscopies, electron microscopy, ion spectrometry, temperature-programed desorption, and atom probe analysis. In addition, this article evaluates the methods used to modify the surface of carbon nanofibers in order to enhance their functionality to perform across an exceedingly diverse application space.

show abstract

Section: Atomic Layer Depositionmentioning

confidence: 99%

Surface characterization and functionalization of carbon nanofibers

Klein¹,

Melechko²,

McKnight³

et al. 2008

Journal of Applied Physics

166

View full text Add to dashboard Cite

show abstract

“…Therefore, even though coaxial, nanostructured oxides such as ZnO, TiO 2, and other metal oxide mixtures have been demonstrated using nanotemplates [1], three-dimensional control of physical parameters has not been fully realized with highly precise resolution and needs to be optimized in order to achieve a wider range of potential applications. Furthermore, the combination of insulating oxides, semiconducting materials, and metals can provide the genesis for various types of novel applications and eventually provide unique and advanced levels of multifunctional nanoscale devices [2]. Recently, metal nanotubes employing platinum (Pt) have been attracting intensive interest due to their excellent electrical properties, chemical stability, and suitability for many applications in microelectronics and catalysis.…”

mentioning

confidence: 99%

Precise control of highly ordered arrays of nested semiconductor/metal nanotubes

Baumgart

Tapily

et al. 2010

Nano Res.

View full text Add to dashboard Cite

Lithographically defined microporous templates in conjunction with the atomic layer deposition (ALD) technique enable remarkable control of complex novel nested nanotube structures. So far three-dimensional control of physical process parameters has not been fully realized with high precision resolution, and requires optimization in order to achieve a wider range of potential applications. Furthermore, the combination of composite insulating oxide layers alternating with semiconducting layers and metals can provide various types of novel applications and eventually provide unique and advanced levels of multifunctional nanoscale devices. Semiconducting TiO 2 nanotubes have potential applications in photovoltaic devices. The combination of nanostructured semiconducting materials with nested metal nanotubes has the potential to produce novel multifunctional vertically-ordered three-dimensional nanodevices. Platinum growth by ALD has been explored, covering the initial stages of the thin film nucleation process and the synthesis of high aspect ratio nanotube structures. The penetration depth of the Pt into porous templates having various pore sizes and aspect ratios has been investigated. Several multi-walled nested TiO 2 -Pt nanotubes in series have been successfully fabricated using microporous Si templates. These innovative nested nanostructures have the potential to produce novel multifunctional vertically-ordered three-dimensional nanodevices in photovoltaic and sensing technologies. KEYWORDSAtomic layer deposition (ALD) platinum nanotubes, semiconductor/metal nanotubes, microporous Si templates, nanoporous alumina templates, multilayer nested nanotubes For several decades, the fabrication of nanostructures having highly-ordered, complex architectures has been one of the most interesting research topics. These structures have the potential to advance current technologies and enable the development of newer and more innovative applications of all kinds. In the past few years, vertically-ordered, self-organized nanotubes and nanorods have been synthesized using anodic aluminum oxide (AAO) or silicon (Si) nano/micropore templates. Most coaxial nanotubes currently produced with nanotemplates maintain three-dimensional scales close to those of the original Nano

show abstract

“…[24][25][26][27] The defective nature of MWCNTs being synthesized in a plasma environment was reported to enhance the nucleation of ALD processes. 28 In addition, it has been demonstrated that the O 3 -based process for Al 2 O 3 using trimethylaluminum (TMA) yields a better conformality on similar CNT arrays than the TMA/H 2 O ALD process.…”

Section: Resultsmentioning

confidence: 99%

Atomic layer deposition-based synthesis of photoactive TiO2 nanoparticle chains by using carbon nanotubes as sacrificial templates

Deng

Verbruggen

et al. 2014

RSC Adv.

View full text Add to dashboard Cite

Highly ordered and self supported anatase TiO 2 nanoparticle chains were fabricated by calcining conformally TiO 2 coated multi-walled carbon nanotubes (MWCNTs). During annealing, the thin tubular TiO 2 coating that was deposited onto the MWCNTs by atomic layer deposition (ALD) was transformed into chains of TiO 2 nanoparticles (~12 nm diameter) with an ultrahigh surface area (137 cm 2 per cm 2 of substrate), while at the same time the carbon from the MWCNTs was removed. Photocatalytic tests on the degradation of acetaldehyde proved that these forests of TiO 2 nanoparticle chains are highly photo active under UV light because of their well crystallized anatase phase.

show abstract

Multilayer and functional coatings on carbon nanotubes using atomic layer deposition

Cited by 94 publications

References 17 publications

Surface characterization and functionalization of carbon nanofibers

Surface characterization and functionalization of carbon nanofibers

Precise control of highly ordered arrays of nested semiconductor/metal nanotubes

Atomic layer deposition-based synthesis of photoactive TiO2 nanoparticle chains by using carbon nanotubes as sacrificial templates

Contact Info

Product

Resources

About