Dear all,

We will have a luncheon seminar by Prof. Yoshihiro Kobayashion July 7, 2009. The seminar will start at 12:10 in a meeting room (# 503) on 5F of the GSE Common EAST (U1E) building (Kohso-toh).
Title and abstract of his lecture are shown below,

Topic: Carbon nanotube synthesis from gold, silver, copper and crystalline nanoparticles
Growth mechanism and possibility for chirality control

Abstract: Carbon nanotubes (CNTs) are a tubular one-dimensional nanomaterial with the structure rolling a graphene sheet. They have various unique characteristics derived from their low dimensionality and are expected to be a promising candidate as the key material for future nanodevices. Their properties, however, strongly depend on their structures such as diameter and chirality, and accordingly, precise control of CNT structures has been essential issues for technological applications of CNTs to nanoelectronics.
In this seminar, I will talk about our recent results on CNT synthesis from novel growth seeds: nanoparticles of Au, Ag, Cu and crystalline solids such as SiC and diamonds, which have never been considered to have activities for CNT growth. Based on this research, we will discuss the essential role of the growth seeds. In addition, we will debate the growth mechanism from solid nanoparticle seeds, which should not be dominated by usual bulk diffusion in the particles but by surface diffusion on the particles, and will discuss future perspectives of the possibility for structural control via epitaxial relations between CNTs and crystalline growth seeds.

Regards,
Nishizawa and Suenobu