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Simultaneous separation of polydisperse particles using an asymmetric nonperiodic optical stripe pattern

机译:使用非对称非周期性光学条纹图案同时分离多分散颗粒

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摘要

We present simultaneous separation of polydisperse particles driven by an optical gradient force in the absence of microfluidic flow. The separation mechanism involves particle-size dependence of the potential landscape generated by a one-dimensional asymmetric optical stripe pattern. The outcome is that the particles align in different stacks according to their sizes. The dynamics of Brownian particles inside the optical potential landscapes are investigated theoretically and experimentally for various optical intensities and particle sizes. By introducing sequential changes in the optical profile, we also show that this technique allows semipassive arrangement of particles in arbitrary configurations.
机译:我们目前在没有微流体流的情况下,由光学梯度力驱动的多分散颗粒的同时分离。分离机制涉及一维非对称光学条纹图案所产生的潜在景观的粒度依赖性。结果是,粒子根据其大小排列在不同的堆栈中。从理论上和实验上研究了各种光强度和粒径下布朗势粒子在光学势态图中的动力学。通过在光学轮廓中引入顺序变化,我们还显示出该技术允许以任意配置对粒子进行半被动排列。

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