Nanotech 2005 Vol. 2
Nanotech 2005 Vol. 2
Technical Proceedings of the 2005 NSTI Nanotechnology Conference and Trade Show, Volume 2

Surfaces and Films Chapter 5

Transition Mechanisms and Phases of Hexane Physisorbed on Graphite

Authors: C.L. Pint, M.W. Roth and C. Wexler

Affilation: University of Northern Iowa, United States

Pages: 365 - 368

Keywords: adsorption, n-alkanes

Abstract:
We study the transition mechanisms in submonolayer, monolayer, and supermonolayer hexane adsorbed onto graphite, and find that the driving mechanism for the nematic (liquid crystal) phase observed is out-of-plane tilting caused by molecular in-plane rolling, and that the mechanism for the nematic-to-fluid phase transition is a combition of primarily a "tilt-lock" mechanism accompanied by a small amount of intramolecular gauche defects. We find that in-plane room for this system is paramount to understanding these phases, and believe that our understanding of the effects of in-plane room can be applied to other nanoscale systems.

Transition Mechanisms and Phases of Hexane Physisorbed on Graphite

ISBN: 0-9767985-1-4
Pages: 808
Hardcopy: $109.95