Sun Xiaodong, Sun Yuyang, Bu Jing, Zhu Siwei, Yuan X-C
Institute of Modern Optics, Key Laboratory of Optoelectronic Information Science & Technology, Ministry of Education of China, Nankai University, Tianjin, 300071, China.
Appl Opt. 2010 Oct 1;49(28):5437-43. doi: 10.1364/AO.49.005437.
We report a method for microfluidic multiple trapping and continuous sorting of microparticles using an optical potential landscape projected by a Dammann grating, enabling a high power-efficient approach to forming a composite two-dimensional spots array with high uniformity. The Dammann grating is fabricated in a photoresist by optical lithography. It is employed to create an optical lattice for multiple optical trapping and sorting in a mixture of polymer particles (n = 1.59) and silica particles (n = 1.42) with the same diameters of 3.1 μm. In addition to the exponential selectivity by the projected optical landscapes, the proposed microfluidic sorting system has advantages in terms of high power efficiency and high uniformity due to the Dammann grating.
我们报道了一种利用达曼光栅投射的光势场对微粒进行微流控多重捕获和连续分选的方法，该方法能以高功率效率形成具有高均匀性的复合二维斑点阵列。达曼光栅通过光刻技术在光刻胶中制造。它被用于在直径均为3.1μm的聚合物颗粒（n = 1.59）和二氧化硅颗粒（n = 1.42）的混合物中创建用于多重光捕获和分选的光晶格。除了由投射光场产生的指数选择性外，由于达曼光栅，所提出的微流控分选系统在高功率效率和高均匀性方面具有优势。
