title: Electro-response of MoS2 Nanosheets-Based Smart Fluid with Tailorable Electrical Conductivity.
abstract: The correlation between electrical conductivity and electro-responsive behavior is identified by introducing few-layer molybdenum disulfide (MoS2) nanosheets to electrorheological (ER) fluid. Few-layer MoS2 nanosheets are successfully fabricated, with a high yield of above 60%, using a straightforward method, and applied to an electro-responsive smart fluid. The electrical conductivity of MoS2 is easily tunable by adjusting the annealing temperature because of its semiconducting behavior. From an in-depth study on the conductivity-dependent ER behavior of few-layer MoS2 nanosheets, it can be verified that an optimum value of the electrical conductivity exists for the electro-responsive material, corresponding to the Wagner model. To the best of our knowledge, this is the first report on the potential of a transition-metal dichalcogenide as a candidate material for an ER fluid. This study may provide promising approaches for the performance improvement of electro-responsive smart fluids.
authors.affiliation: School of Chemical and Biological Engineering, College of Engineering, Seoul National University (SNU) , Seoul 151-742, Korea.
authors.forename: Seungae
authors.initials: S
authors.lastname: Lee
authors.affiliation: School of Chemical and Biological Engineering, College of Engineering, Seoul National University (SNU) , Seoul 151-742, Korea.
authors.forename: Yun Ki
authors.initials: YK
authors.lastname: Kim
authors.affiliation: School of Chemical and Biological Engineering, College of Engineering, Seoul National University (SNU) , Seoul 151-742, Korea.
authors.forename: Jin-Yong
authors.initials: JY
authors.lastname: Hong
authors.affiliation: School of Chemical and Biological Engineering, College of Engineering, Seoul National University (SNU) , Seoul 151-742, Korea.
authors.forename: Jyongsik
authors.initials: J
authors.lastname: Jang
keywords: Stimuli-responsive materials; electro-responsive; electrorheological; molybdenum disulfide; smart fluid