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

摘要

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.