Reversible shear thickening at low shear rates of electrorheological fluids under electric fields.
Reversible shear thickening at low shear rates of electrorheological fluids under electric fields.
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DOI：
10.1103/physreve.83.011401
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发表时间：
2010-08
期刊：
影响因子：
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通讯作者：
Yu Tian;Minliang Zhang;Jile Jiang;N. Pesika;Hongbo Zeng;J. Israelachvili;Y. Meng;S. Wen
中科院分区：
文献类型：
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作者：
Yu Tian;Minliang Zhang;Jile Jiang;N. Pesika;Hongbo Zeng;J. Israelachvili;Y. Meng;S. Wen
通过在两个同心圆柱体之间剪切电流变 (ER) 流体，我们展示了 ER 流体在低临界剪切速率 (100 V/mm) 之上的可逆剪切稠化，这可以通过临界表观粘度来表征。剪切增稠和静电颗粒相互作用引起的颗粒间摩擦力被认为在电流变流体的横向剪切阻力的起源中起着重要作用，而施加的电场控制剪切增稠的程度。电场控制的可逆剪切增稠对于高性能电流变-磁流变液设计、通过施加局部电场触发的具有高摩擦力的离合器液、其他场响应材料和智能系统具有重要意义。
By shearing electrorheological (ER) fluids between two concentric cylinders, we show a reversible shear thickening of ER fluids above a low critical shear rate (100 V/mm), which can be characterized by a critical apparent viscosity. Shear thickening and electrostatic particle interaction-induced interparticle friction forces are considered to play an important role in the origin of lateral shear resistance of ER fluids, while the applied electric field controls the extent of shear thickening. The electric-field-controlled reversible shear thickening has implications for high-performance electrorheological-magnetorheological fluid design, clutch fluids with high friction forces triggered by applying a local electric field, other field-responsive materials, and intelligent systems.