| abstract |
PROBLEM TO BE SOLVED: To provide an electrorheological fluid composition and a cylinder device capable of obtaining a large ER effect while suppressing a current density. SOLUTION: The electroviscosity fluid composition (8) of the present invention contains a fluid (32) and particles (28) having ionic conductivity, and the particles (28) having ionic conductivity cover the surface of the particles (28). It has a first layer (29) that constitutes, and a second layer (30) that constitutes the inside of the particles (28) from the first layer (29), and the ions of the first layer (29). It is characterized in that the conductivity is lower than the ionic conductivity of the second layer (30). [Selection diagram] Fig. 1 |