Size engineering of metal nanoparticles to diameter-specified growth of single-walled carbon nanotubes with horizontal alignment on quartz

Nanotechnology
Jin-Ju KimGoo-Hwan Jeong

Abstract

The electronic, physical and optical properties of single-walled carbon nanotubes (SWNTs) are governed by their diameter and chirality, and thus much research has been focused on controlling the diameter and chirality of SWNTs. To date, control of the catalyst particle size has been thought to be one of the most promising approaches to control the diameter or chirality of SWNTs owing to the correlation between catalyst particle size and tube diameter.In this study, we demonstrate the size engineering of catalytic nanoparticles for the controlled growth of diameter-specified and horizontally aligned SWNTs on quartz substrates. Uniformly sized iron nanoparticles derived from ferritin molecules were used as a catalyst, and their size was intentionally decreased via thermal heat treatment at 900 °C under atmospheric Ar ambient. ST-cut quartz wafers were used as growth substrates in order to elucidate the effect of the size of the nanoparticles on the tube diameter and the effect of catalyst size on the degree of parallel alignment on the quartz substrates. SWNTs grown by chemical vapor deposition using methane as feedstock exhibited a high degree of horizontal alignment when the particle density was low enough to produce individual...Continue Reading

References

Jan 22, 2002·Physical Review Letters·J GavilletJ C Charlier
Jun 9, 2005·Journal of the American Chemical Society·Goo-Hwan JeongYoshikazu Homma
Aug 25, 2005·Journal of the American Chemical Society·Ali Javey, Hongjie Dai
Dec 31, 2005·Physical Review Letters·Jannik C MeyerJean-Louis Sauvajol
Nov 10, 2006·The Journal of Physical Chemistry. B·Qingkai YuShin-Shem Pei
Nov 11, 2009·Nano Letters·Jianliang XiaoJohn A Rogers

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Citations

Nov 20, 2015·Scientific Reports·Daniel HedmanJ Andreas Larsson

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