The static yield stress of dielectric electrorheological(DER) fluids of infinite column state and chain state are calculated from the first principle method. The results indicate that the column surface contributions to ER effects is very small and both states will give correct results to the real DER fluids.
Cite
@article{arxiv.cond-mat/0102002,
title = {Column size effects of DER fluids},
author = {Tianyu Zhao and H. R. Ma},
journal= {arXiv preprint arXiv:cond-mat/0102002},
year = {2009}
}