Controlled filling of Permalloy into one-end-opened carbon nanotubes

Wang, Xiao Hui; Orikasa, Hironori; Inokuma, Nobuhiro; Yang, Quankui; Hou, Peng; Oshima, Hiroyuki; Itoh, Ken‐ichi; Kyotani, Takashi

doi:10.1039/b614300h

Cited by 39 publications

(24 citation statements)

References 38 publications

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“…The AAO-CNTs used can be either one-side open or both-side open. Foreign matters can be loaded into the carbon-deposited AAO template by using incipient wetness impregnation [40,42,[118][119][120][121], sublimation [122][123][124][125][126][127], or electrodeposition method [41,109,[128][129][130][131]. Since only the inner surface of the AAO-CNTs is exposed, the foreign matters would be selectively filled inside the hollow cores of CNTs.…”

Section: Filling Of Aao-cntsmentioning

confidence: 99%

“…When an electric field is applied, metal ions in the electrolyte solution migrate and are deposited onto an electrode by passing a current through an electrochemical cell. Therefore, metals can be filled into the cavity of AAOCNTs by using the electrodeposition method under a direct current [41,128,129] or alternating current [106]. In general, a layer of Au is first deposited on the surface of a both-side open AAO film using ion sputtering technique.…”

Section: Electrodepositionmentioning

confidence: 99%

“…Wang et al [41] first filled Permalloy into a one-endopened CNT embedded in an AAO film connected with Al substrate. In spite of the conductive outer carbon film, it was unambiguously demonstrated that the Permalloy filling started from the pore bottoms of CNTs.…”

Section: Electrodepositionmentioning

confidence: 99%

“…In addition, the AAO template synthesis method makes it possible to selectively dope or chemically functionalize the inner or outer surface of CNTs. Owing to these unique characteristics, the CNTs prepared by AAO template method may find applications in biomedical or drug delivery [39], small molecule delivery systems [40], high density magnetic recording [41], anode materials [42], etc.…”

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confidence: 99%

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Carbon nanotubes prepared by anodic aluminum oxide template method

et al. 2011

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One of the most unique structural characteristics of carbon nanotubes (CNTs) differentiating from other carbon materials is their hollow nanochannles, which can be utilized for encapsulating and loading foreign matters. The anodic aluminum oxide (AAO) template technique enables the diameter, length, and cap structure control of the replicated CNTs, and thus shows advantages in pore structure control over the traditional CNT growth approaches. This review details the synthesis of CNTs with tunable diameter, length, wall thickness, and crystalline by using the AAO template method. The doping of heteroatoms and filling of foreign matters into AAO-CNTs are also addressed. Moreover, the main challenges and developing trends of the AAO template method are discussed.carbon nanotubes (CNTs), anodic aluminum oxide (AAO) template method, controllability Citation:Hou P X, Liu C, Shi C, et al. Carbon nanotubes prepared by anodic aluminum oxide template method.

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Section: Filling Of Aao-cntsmentioning

confidence: 99%

Section: Electrodepositionmentioning

confidence: 99%

Section: Electrodepositionmentioning

confidence: 99%

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confidence: 99%

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Carbon nanotubes prepared by anodic aluminum oxide template method

et al. 2011

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“…For example, using electrodeposition and a porous anodic alumina template, permalloy (an alloy of Ni and Fe) nanocrystals have been filled inside one-end open CNTs with a uniform diameter of 40 nm and a length of 900 nm [35]. Interestingly, even isolated permalloy nanoparticles inside CNTs displayed prominent magnetic anisotropy with an easy magnetization direction along the CNT axis.…”

Section: Cnts Filled With Metals and Alloysmentioning

confidence: 99%

Recent developments in inorganically filled carbon nanotubes: successes and challenges

Gautam

Costa²,

Bando

et al. 2010

Science and Technology of Advanced Materials

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Carbon nanotubes (CNTs) are a unique class of nanomaterials that can be imagined as rolled graphene sheets. The inner hollow of a CNT provides an extremely small, one-dimensional space for storage of materials. In the last decade, enormous effort has been spent to produce filled CNTs that combine the properties of both the host CNT and the guest filling material. CNTs filled with various inorganic materials such as metals, alloys, semiconductors and insulators have been obtained using different synthesis approaches including capillary filling and chemical vapor deposition. Recently, several potential applications have emerged for these materials, such as the measurement of temperature at the nanoscale, nano-spot welding, and the storage and delivery of extremely small quantities of materials. A clear distinction between this class of materials and other nanostructures is the existence of an enormous interfacial area between the CNT and the filling matter. Theoretical investigations have shown that the lattice mismatch and strong exchange interaction of CNTs with the guest material across the interface should result in reordering of the guest crystal structure and passivation of the surface dangling bonds and thus yielding new and interesting physical properties. Despite preliminary successes, there remain many challenges in realizing applications of CNTs filled with inorganic materials, such as a comprehensive understanding of their growth and physical properties and control of their structural parameters. In this article, we overview research on filled CNT nanomaterials with special emphasis on recent progress and key achievements. We also discuss the future scope and the key challenges emerging out of a decade of intensive research on these fascinating materials.

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Carbon Nanotubes for Catalytic Applications

Castillejos

Serp

2010

Carbon Nanotubes and Related Structures

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Controlled filling of Permalloy into one-end-opened carbon nanotubes

Cited by 39 publications

References 38 publications

Carbon nanotubes prepared by anodic aluminum oxide template method

Carbon nanotubes prepared by anodic aluminum oxide template method

Recent developments in inorganically filled carbon nanotubes: successes and challenges

Carbon Nanotubes for Catalytic Applications

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