Theoretical study of the trapping efficiency of an optical tweezers array system
Li Qin(李勤)a)† , Feng Wan-Li(冯万力)b), Hu Xiao-Ming(胡晓明)a), Cao Qun(曹群)a), Sha Ding-Guo(沙定国)b), and Lin Jia-Ming(林家明)b)
a Department of Biomedical Engineering, Beijing Institute of Technology, Beijing 100081, China; b Department of Opto-electronic Engineering, Beijing Institute of Technology, Beijing 100081, China
Abstract Optical tweezers have been a valuable research tool since their invention in the 1980s. One of the most important developments in optical tweezers in recent years is the creation of two-dimensional arrays of optical traps. In this paper, a method based on interference is discussed to form gradient laser fields, which may cause the spatial modulation of particle concentration. The parameters related to the optical tweezers array are discussed in detail and simulated by the Matlab software to show the influence of important parameters on the distribution of particle concentration. The spatial redistribution of particles in a laser interference field can also be predicted according to the theoretical analysis.
Received: 11 May 2007
Revised: 23 August 2007
Accepted manuscript online:
(Mechanical effects of light on atoms, molecules, and ions)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 20505002), the
Excellent Young Scholars Research
Fund of Beijing Institute of Technology (Grant No 000Y06-23), and the
Excellent Scholars Research Fund of Beijing (Grant No 20071D1600300394).
Cite this article:
Li Qin(李勤), Feng Wan-Li(冯万力), Hu Xiao-Ming(胡晓明), Cao Qun(曹群), Sha Ding-Guo(沙定国), and Lin Jia-Ming(林家明) Theoretical study of the trapping efficiency of an optical tweezers array system 2008 Chin. Phys. B 17 726
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
