title: Comment on "An enhanced polarization mechanism for the metal cations modified amorphous TiO2 based electrorheological materials" by Qing Wu, Bin Yuan Zhao, Chen Fang and Ke Ao Hu.
abstract: Comments on a recent article on an enhanced polarization mechanism for the metal cations modified amorphous TiO2 based electrorheological materials are presented, based upon an examination of the yield stress, which is a function of electric-field strength, of the materials. Using the deduced critical electric-field strengths, we find that the universal yield stress equation proposed collapses the data given by Qing Wu, Bin Yuan Zhao, Chen Fang, Ke Ao Hu, Eur. Phys. J. E 17, 63 (2005), onto a single curve.
authors.affiliation: Department of Polymer Science and Engineering, Inha University, 402-751 Incheon, Korea.
authors.forename: K-H
authors.initials: KH
authors.lastname: Lee
authors.forename: B J
authors.initials: BJ
authors.lastname: Park
authors.forename: H J
authors.initials: HJ
authors.lastname: Choi