Accession Number:

AD1096515

Title:

Chiral-Selective Carbon Nanotube Growth New, Clear Horizons from Theory to Practice

Descriptive Note:

Technical Report,31 May 2014,01 Jun 2018

Corporate Author:

Rice University Houston United States

Personal Author(s):

Report Date:

2019-09-12

Pagination or Media Count:

9.0

Abstract:

The growth of nanotubes with specific chirality is essential for industrial applications and remains a great challenge. Using graphene as a for the representation of the CNT edge, we investigated effects of catalyst type and softness on preferred positioning of the edge as well as its growth shapes. Considering the energetics of the CNT-catalyst interface, we uncovered an edge-type segregated configuration that significantly lowers the energy of chiral nanotubes allowing preference towards mid-chirality CNTs on some catalysts, while combination of the thermodynamic preference towards armchair CNTs on Co and Ni catalysts and kinetic favoring of chiral tubes explained the next to-armchair chiral preference. Those findings provide rich theoretical base for the CNT synthesis with controlled chiral selectivity.

Subject Categories:

  • Miscellaneous Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE