[10p-PB5-1~55] 17 Nanocarbon Technology (Poster)

[10p-PB5-10] Frictional Properties of Vertically-Aligned Single-Walled Carbon Nanotubes

Minori Fukuda¹, Emi Inou², Kota Shihommatsu², Maki Shimizu², 〇Yoshikazu Homma² (1.Senzoku High School, 2.Tokyo Univ. of Science)

Keywords:carbon nanotube, friction, coefficient of static friction

Vertically-aligned (VA)-CNTs, growing with a high density and vertically to the substrate, can yield great friction force because of a large true contact area. To elucidate the property of nanoscale friction, we measured the VA-CNT’s friction force. We used two types of VA-CNTs; grown with Fe and Co as the catalysts. In the small normal force range, coefficient of static friction was higher than that in the bigger force range. This result is different from the law of friction indicating that coefficient of static friction force is constant. The Fe-catalyzed-CNTs yielded greater friction force than the Co-catalyzed-CNTs did. This can be explained by the morphology and crystallinity of CNTs. Because the Fe-catalyzed-CNTs can contact the substrate surface closely, they can cause greater friction force.