TY - JOUR
T1 - Selective synthesis of double helices of carbon nanotube bundles grown on treated metallic substrates
AU - Cervantes-Sodi, Felipe
AU - Íñiguez-Rábago, Agustín
AU - Rosas-Meléndez, Samuel
AU - Ballesteros-Villarreal, Mónica
AU - Vilatela, Juan J.
AU - Reyes-Gutiérrez, Lucio G.
AU - Palacios, Eduardo
AU - Terrones, Mauricio
AU - Jiménez-Rodríguez, José A.
PY - 2012/12
Y1 - 2012/12
N2 - Double-helix microstructures consisting of two parallel strands of hundreds of multi-walled carbon nanotubes (MWCNTs) have been synthesized by chemical vapour deposition of ferrocene/toluene vapours on metal substrates. Growth of coiled carbon nanostructures with site selectivity is achieved by varying the duration of thermochemical pretreatment to deposit a layer of SiOx on the metallic substrate. Production of multibranched structures of MWCNTs converging in SiOx microstructure is also reported. In the abstract figure, panel (a) shows a coloured micrograph of a typical double-helix coiled microstructure of MWCNTs grown on SiOx covered steel substrate. Green and blue show each of the two individual strands of MWCNTs. Panel (b) is an amplification of a SiOx microparticle (white) on the tip of the double-stranded coil (green and blue). The microparticle guides the collective growth of hundreds of MWCNTs to form the coiled structure.
AB - Double-helix microstructures consisting of two parallel strands of hundreds of multi-walled carbon nanotubes (MWCNTs) have been synthesized by chemical vapour deposition of ferrocene/toluene vapours on metal substrates. Growth of coiled carbon nanostructures with site selectivity is achieved by varying the duration of thermochemical pretreatment to deposit a layer of SiOx on the metallic substrate. Production of multibranched structures of MWCNTs converging in SiOx microstructure is also reported. In the abstract figure, panel (a) shows a coloured micrograph of a typical double-helix coiled microstructure of MWCNTs grown on SiOx covered steel substrate. Green and blue show each of the two individual strands of MWCNTs. Panel (b) is an amplification of a SiOx microparticle (white) on the tip of the double-stranded coil (green and blue). The microparticle guides the collective growth of hundreds of MWCNTs to form the coiled structure.
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U2 - 10.1002/pssb.201200116
DO - 10.1002/pssb.201200116
M3 - Article
AN - SCOPUS:84872580165
SN - 0370-1972
VL - 249
SP - 2382
EP - 2385
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
IS - 12
ER -