论文标题
通过光的可控阶段轮廓的实验表明新型光学布朗棘轮
Experimental demonstration of novel optical Brownian ratchet by controllable phase profile of light
论文作者
论文摘要
布朗棘轮已成为理解分子和蛋白质运动机制的有前途的工具，并在非平衡热力学状态下动态操纵颗粒。在这里，我们提出并在实验上展示了一种新型的光学布朗棘轮，该棘轮是通过在全息光学诱捕系统中使用可控的相位剖面生成的。通过LabView软件控制，势能配置文件在开关模式下动态切换。实验结果表明，在布朗棘轮中，不仅可以轻松地达到高速，而且很容易达到较大的步长，其中，正向运动的平均速度约为28μm/s，步进距离约为42μm。更重要的是，通过操纵全息图，它的运动路径，步进距离和速度可以轻松更改，该全息图具有很高的灵活性，易于控制和出色的能力。该技术为探索纳米级级别探索非平衡动力学的新机会，并开发了新型的纳米颗粒操作。
Brownian ratchet has emerged as a promising tool for understanding motion mechanism of molecules and proteins, and dynamically manipulating particles in non-equilibrium thermodynamics state. Here, we propose and experimentally demonstrate a new type of optical Brownian ratchets, which is generated by using controllable phase profiles in holographic optical trapping system. The potential energy profiles are dynamically switched in on-off mode, controlled by Labview software. Experimental results reveal that not only high speed but also large step distance can be easily achieved in Brownian ratchet, in which the average velocity of forward motion is about 28 μm/s and step distance is about 42 μm. More importantly, its motion path, step distance and velocity can be easily changed by manipulating its holograms, which exhibits high flexibility, easy control and excellent capability. This technique provides new opportunities for exploring non-equilibrium dynamics at the nanoscale level, and developing novel nanoparticle manipulation.
