Synthesis and growth kinetics of carbon nanocoils using Sn-Fe-O xerogel film catalyst

Hikita, Muneaki; Lafdi, Khalid

doi:10.1088/2053-1591/1/3/035027

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Growth Mechanism Of Single Helical and Twisted Carbon Filaments1

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2014

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“…Therefore, Sn within Fe matrix increased growth rate of carbon filaments [47]. Hikita et al [48] ) because Sn-Fe-O catalyst was reduced by carbon and defects were created during the reaction [48]. Duan et al [49] proposed that an asymmetric catalyst shape causes a helical structure as illustrated in Figure 15.…”

Section: Growth Mechanism Of Single Helical and Twisted Carbon Filamentsmentioning

confidence: 99%

Growth and Properties of Carbon Microcoils and Nanocoils

2014

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Abstract:Various types of coiled carbon filaments have been synthesized using chemical vapor deposition and other methods. These carbon filaments exhibit unique electrical and mechanical properties due to their versatile shapes and structures. To form coiled shapes, different types of catalyst compositions and reactive gases have been explored. Generally, coiled carbon filaments are classified by coil diameter and shape (e.g., microcoil and nanocoil). In this review, coiled carbon filaments are classified into three growth mechanism categories: (1) bidirectional double helical growth; (2) bidirectional twisted growth; and (3) tip single helical or twisted growth. Next, their synthesis methods and hypothetical growth mechanisms are discussed. Then, their electrical and mechanical properties are listed. Finally, potential applications and uses of coiled carbon filament are mentioned.

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