中国激光, 2010, 37 (5): 1245, 网络出版: 2010-05-11
利用光镊系统制作微型器件
Fabrication of Micro Devices by Use of Optical Tweezers
摘要
光镊作为操纵微小物体的有力工具,通常用来捕获微小物体并控制其运动。利用光镊激光焦点处高度集中的热能量以及光镊的搬运作用,可以精确控制溶液中析出晶体的形状及控制沉淀反应中沉淀颗粒的排列方式,以此可作为制作微型器件的一种手段。分别采用激光诱导快速结晶法和激光辅助沉淀法,制作了以硫酸铜和碳酸钙为基质材料的微型器件。研究了影响晶体析出速度的不同因素,探讨了适于辅助沉淀法生长器件的沉淀反应的类型。相比之下,结晶法生长器件效率高,而沉淀法制作的器件稳定性高。所建立的实验装置和方法拓宽了光镊的应用领域,提供了精细制作微型器件的一种新方法。
Abstract
Optical tweezers,as a powerful tool of manipulation of micro-objects,is commonly used for trapping micro-objects and controlling their movement. Making use of the highly focused heat energy at the laser focus and the transportation ability of the optical tweezers,the process of crystallization,the shape of crystal separating out from solution,and the arrangement mode of the deposition from precipitation reaction can be controlled precisely,which may be used as a means of making micro devices. The laser-induced crystallization method and the laser-assisted precipitation method are used to make micro devices with the copper sulfate and the calcium carbonate as the based materials,respectively. Different factors influencing grow speed of crystals are investigated. The condition of precipitation reaction fitting to the laser-assisted precipitation method is discussed. By comparing,the method of laser-induced crystallization works more efficiently,while the method of laser-assisted precipitation can produce more stable devices. The experimental equipment and the proposed methods not only spread the application domain of optical tweezers but also provide a new way for fabrication of micro devices.
彭飞, 姚保利, 雷铭, 严绍辉, 赵卫. 利用光镊系统制作微型器件[J]. 中国激光, 2010, 37(5): 1245. Peng Fei, Yao Baoli, Lei Ming, Yan Shaohui, Zhao Wei. Fabrication of Micro Devices by Use of Optical Tweezers[J]. Chinese Journal of Lasers, 2010, 37(5): 1245.