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首页> 外文期刊>The European physical journal, E. Soft matter >A submicron device to rectify a square-wave angular velocity
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A submicron device to rectify a square-wave angular velocity

机译:亚微米器件,用于校正方波角速度

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摘要

We study a system composed of two thick dielectric disks separated by a thin layer of an electrolyte solution. Initially both plates have the same surface charge distribution. The surface charge distribution has no rotational symmetry. We show that the top plate experiences a torque τ(θ) if it rotates about its axis by an angle θ. The torque can be controlled by varying the electrolyte concentration, the separation and the surface charge density of the plates. For a specific example of charged rods attached to the plates, we find τ(θ) ∝ sin(4θ). We also study the dynamics of the system. We consider the case where the angular velocity of the bottom disk is a square-wave signal. We find that the average angular velocity of the top disk is not zero.
机译:我们研究了一个由两个厚的绝缘盘组成的系统,该绝缘盘由一层薄薄的电解质溶液隔开。最初,两个板具有相同的表面电荷分布。表面电荷分布没有旋转对称性。我们显示,如果顶板绕其轴旋转角度θ,则会遇到扭矩τ(θ)。可以通过改变板的电解质浓度,间距和表面电荷密度来控制扭矩。对于连接到板上的带电杆的特定示例,我们发现τ(θ)∝ sin(4θ)。我们还研究了系统的动力学。我们考虑底盘的角速度是方波信号的情况。我们发现顶盘的平均角速度不为零。

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