2000
DOI: 10.1016/s0008-6223(99)00145-1
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Effect of external electromagnetic field and bias voltage on the vapor growth, morphology and properties of carbon micro coils

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Cited by 24 publications
(9 citation statements)
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“…These helical materials include helical carbon nanotubes [1], silicon carbon nanosprings [2], silica nanosprings [3][4][5], SiC-SiO 2 core-shell nanowires [6], and transition-metal oxide nanofibers such as TiO 2 [7,8]. Motojima et al reported the synthesis of micro-coiled carbon fibers by metal powder-activated pyrolysis of acetylene containing a small amount of H 2 S or thiophene as an impurity [9][10][11][12]. These coils were double-coiled forms in which two fibers entwined with each other such as double helix of a DNA.…”
Section: Introductionmentioning
confidence: 99%
“…These helical materials include helical carbon nanotubes [1], silicon carbon nanosprings [2], silica nanosprings [3][4][5], SiC-SiO 2 core-shell nanowires [6], and transition-metal oxide nanofibers such as TiO 2 [7,8]. Motojima et al reported the synthesis of micro-coiled carbon fibers by metal powder-activated pyrolysis of acetylene containing a small amount of H 2 S or thiophene as an impurity [9][10][11][12]. These coils were double-coiled forms in which two fibers entwined with each other such as double helix of a DNA.…”
Section: Introductionmentioning
confidence: 99%
“…The bottom parts of the branched CNTs are normally irregular and the diameter is much large than that produced at 800∼900℃. As we know that thiol is one of the molecules which can be usually used to adjust the growth activity and the structure of CNTs [25,26]. In this experiment, 2∼5% (wt%) thiol (e.g.…”
Section: Resultsmentioning
confidence: 99%
“…In-Hwang et al . examined the effect of external EM field and bias voltage on the growth of carbon coils [ 116 ]. EM field and bias voltage were applied to the reaction tube and substrate, respectively, and significantly affects the growth of carbon coils.…”
Section: Effect Of Experimental Parameters On the Growth Of Hcfsmentioning
confidence: 99%
“…EM field and bias voltage were applied to the reaction tube and substrate, respectively, and significantly affects the growth of carbon coils. Yield of carbon coils with an external EM field and bias voltage were 1.9‒2.0 times higher than that obtained without an EM field and bias voltage [ 116 ]. In addition to this, morphology of carbon coils was also changed using external EM field and bias voltage.…”
Section: Effect Of Experimental Parameters On the Growth Of Hcfsmentioning
confidence: 99%