Easy orientation of diblock copolymers on self-assembled monolayers using UV irradiation
Soft Condensed Matter
2015-05-13 v1
Abstract
A simple method based on UV/ozone treatment is proposed to control the surface energy of dense grafted silane layers for orientating block copolymer mesophases. Our method allows one to tune the surface energy down to a fraction of a mN/m. We show that related to the surface, perpendicular orientation of a lamellar phase of a PS-PMMA diblock copolymer (neutral surface) is obtained for a critical surface energy of 23.9-25.7 mN/m. Perpendicular cylinders are obtained for 24.6 mN/m and parallel cylinders for 26.8 mN/m.
Cite
@article{arxiv.0902.2575,
title = {Easy orientation of diblock copolymers on self-assembled monolayers using UV irradiation},
author = {Pang-Hung Liu and Patrick Guenoun and Jean Daillant},
journal= {arXiv preprint arXiv:0902.2575},
year = {2015}
}
Comments
3 figures, 1 table