Roman, C.García-Morales, M.Goswami, S.Marques, A. C.Cidade, M. T.2019-06-042019-06-042018-05-290964-1726PURE: 5593637PURE UUID: 6207c49b-f548-4ffd-88ce-604cfcd0deabScopus: 85049723642WOS: 000433515200001ORCID: /0000-0001-8261-6754/work/69845128http://www.scopus.com/inward/record.url?scp=85049723642&partnerID=8YFLogxKSFRH/BD/115173/2016.The potential of electrorheological (ER) suspensions based on polarizable particles in simple liquids relies on the particles arrangements which turn their quasi Newtonian behavior into gel-like. However, minor attention has been paid to the effect provoked by the liquid viscosity on the ease of orientation and assembly of the particles. With this aim, a study on the ER behavior, at 25 °C, of 1 wt% suspensions of polyaniline (PANI)-based hybrid particles ( - graphene or - tungstene oxide) in silicone oil with varying viscosities (20, 50 and 100 cSt) was carried out. The electric field effect was higher for the PANI-graphene particles suspension in the less viscous silicone oil. However, two drawbacks were observed: (a) higher leakage current flows; and (b) reduced reversibility upon the electric field was turned off. The use of silicone oil with higher viscosity solved these issues.1680542engelectrorheologygraphemepolyanilinesilicone oilsmart fluidstungsten oxideviscositySignal ProcessingCivil and Structural EngineeringAtomic and Molecular Physics, and OpticsGeneral Materials ScienceCondensed Matter PhysicsMechanics of MaterialsElectrical and Electronic Engineeringjournal article10.1088/1361-665X/aac245https://www.scopus.com/pages/publications/85049723642