(a) Side view of the liquid crystal cell with in-plane electrodes. The distance between electrodes is 100 μm, the thickness of the NLC layer is 20 μm. (b) Micrograph of the microcolloid accompanied with the quadrupolar defect between crossed polarizers.
The dependence of the E amplitude on the microparticle distance between electrodes. The output power of the laser is 31 mW, the electric field frequency is 1 Hz, the waveform is rectangular. Temperature is C.
(a) The marked points indicate amplitude and frequency of the AC electric field when the particle leaves the optical trap. (b) The graph depicts the dependence of the mean E amplitude for a half-period of an oscillation on the frequency. In both panels, the squares ( ) show rectangular, the circles (○) show sinusoidal, and triangulares ( ) show triangular waveforms. The output laser power is 18 mW and the temperature is 40 °C.
(a) A schematic diagram showing the electric field distribution in thecell with in-plane electrodes. α is the angle between and x axis. (b) The dependence of on the distance x between electrodes. The inserted panel shows the dependence of Ex on x-coordinate.
The simulation results of the director field distribution in the cell with in-plane electrodes. Panel (a) illustrates the initial state. Panels (b)–(d) show the director reorientation at the electric field strength , respectively.
A schematic drawing of forces acting on microparticle in the NLC cell with in-plane electrodes. (a) In the center of the gap, a particle is driven by the EPH and Stokes drag forces. (b) In the vicinity of the electrodes, microparticle dynamics is influenced by the DEP and ET forces. (c) A diagram of the focused laser beam interaction with a spherical dielectric particle. Here, are the unit vectors, which determine the change of the momentum flux at refraction and reflection. The defines the unit forces acting on the dielectric particle, caused by the reflection and refraction of the light on the outer and inner sphere surface.
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