光电子镊的研究进展

Advances of Optoelectronic Tweezers

光电子镊是在介电泳基础上发展出来的一种新型微粒操纵技术,利用投影原理将光图案投影于具有光电效应的光电导层,产生虚拟电极,以此来实现对微粒的。相对于传统的介电泳操纵,光电子镊最大的特点是具有可灵活操控的虚拟电极,通过软件控制可以在光电导层的任意位置形成需要的光学图案从而达成灵活的操纵效果。阐述了光电子镊的实验系统和工作原理,并详细介绍了其研究进展和在微纳操纵方面的应用。

Optoelectronic tweezers is a new kind of particle manipulation technology based on dielectrophoresis. Light pattern is projected onto a photoconductive layer with the photoelectric effect, and then virtual electrodes is generated on the layer, to manipulate particles. Compared with traditional dielectrophoresis manipulation, the most obvious feature of the optoelectronic tweezers is virtual electrode; it can be flexible controlled by graphics software. Through software, optical pattern can form on anywhere of the photoconductive layer, so as to achieve flexible control. Experimental system and working principle of optoelectronic tweezers are expounded, research progress and application in micro-nano manipulation are introduced.