论文标题
部分可观测时空混沌系统的无模型预测
Optically Modulated Propulsion of Electric Field Powered Photoconducting Janus Particles
论文作者
论文摘要
本文中，我们证明了电动调整电力的Janus颗粒（JP）的迁移率一半覆盖了各种氧化锌（ZnO）半导体层，即多晶，无定形和无定形，并具有SIO2频为频率。 ZnO半导体光电响应使其电导率增加，相对于半导体带隙具有足够的光子能量波长。该作用称为光学调制电动推进（OMEP），可以利用以增加介电和半导体半球之间极化性的对比度，从而导致电动迁移率增加。在电场中添加光学激活可以额外控制JP迁移率。我们还展示了对密集的半导体Janus粒子种群的集体行为和颗粒粒子相互作用的光学控制。
Herein we demonstrate the ability to optically tune the mobility of electrically powered Janus particles (JP) that are half coated with various Zinc Oxide (ZnO) semiconducting layers, i.e. polycrystalline, amorphous and amorphous with a SiO2 passivation layer. The ZnO semiconductor photo-response enables increase in its electrical conductivity with light having wavelengths of sufficient photon energy with respect to the semiconductor bandgap. This effect, termed optically modulated electrokinetic propulsion (OMEP), can be harnessed to increase the contrast in polarizability between the dielectric and semiconducting hemispheres, which in turn, results in an increased electrokinetic mobility. The addition of optical activation to the electrical field enables an additional degree of control of JP mobility. We also demonstrate optical control of collective behavior and particle-particle interactions for dense semi-conducting Janus particle populations.
