Abstract
We study block copolymers (BCPs) on patterned substrates, where the top polymer film surface is not constrained but is free and can adapt its shape self-consistently. In particular, we investigate the combined effect of free interface undulations with wetting of the BCP film as induced by nanopatterned substrates. Under wetting conditions and for a finite volume of BCP material, we find equilibrium droplets composed of coexisting perpendicular and parallel lamellar domains. The self-assembly of BCPs on topographic patterned substrates is also investigated and it is found that the free interface induces mixed morphologies of parallel and perpendicular domains coupled with a nonflat free interface. Our study has some interesting consequences for experimental setups of graphoepitaxy and nanoimprint lithography.
| Original language | English |
|---|---|
| Article number | 010801 |
| Journal | Physical Review E - Statistical, Nonlinear, and Soft Matter Physics |
| Volume | 86 |
| Issue number | 1 |
| DOIs | |
| State | Published - 12 Jul 2012 |
| Externally published | Yes |
Fingerprint
Dive into the research topics of 'Block copolymer films with free interfaces: Ordering by nanopatterned substrates'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver