Abstract
We have investigated the flow properties of a nanofluid (NF) suspension (oleic acid-coated Fe3O4 in kerosene) under a sheared system. A distinct cooperative flow mediated by the gelation temperature (Tg) leading to an order-disorder transition state is evidenced within a definite and short range of temperatures, around 86 °C. Further, the particle size and concentration-dependent viscosity vs. temperature studies have moderated the phase transition phenomena of the NFs dispersion. The findings provide a unique visco-elastic behavior of the nanofluid to gel state follows first-order –type phase transition, which has technological applications as heat engines.
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