| Theoretical study of the trapping efficiency of an optical tweezers array system |
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| 引用本文： | 李 勤,冯万力,胡晓明,曹 群,沙定国,林家明. Theoretical study of the trapping efficiency of an optical tweezers array system[J]. 中国物理 B, 2008, 17(2): 726-735 |
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| 作者姓名： | 李 勤 冯万力 胡晓明 曹 群 沙定国 林家明 |
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| 作者单位： | Department of Biomedical Engineering, Beijing Institute of Technology, Beijing 100081, China;Department of Opto-electronic Engineering, Beijing Institute of Technology, Beijing 100081, China;Department of Biomedical Engineering, Beijing Institute of Technology, Beijing 100081, China;Department of Biomedical Engineering, Beijing Institute of Technology, Beijing 100081, China;Department of Opto-electronic Engineering, Beijing Institute of Technology, Beijing 100081, China;Department of Opto-electronic Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| 基金项目： | Project supported by the NationalNatural Science Foundation of China (Grant No 20505002), theExcellent Young Scholars ResearchFund of Beijing Institute of Technology (Grant No 000Y06-23), and theExcellent Scholars Research Fund of Beijing (Grant No 20071D1600300394). |
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| 摘 要： | 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.
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| 关 键 词： | 梯度力 捕获频率 空间调制 光学 |
| 收稿时间： | 2007-05-11 |
| 修稿时间： | 2007-08-23 |
Theoretical study of the trapping efficiency of an optical tweezers array system |
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| Li Qin,Feng Wan-Li,Hu Xiao-Ming,Cao Qun,Sha Ding-Guo and Lin Jia-Ming. Theoretical study of the trapping efficiency of an optical tweezers array system[J]. Chinese Physics B, 2008, 17(2): 726-735 |
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| Authors: | Li Qin Feng Wan-Li Hu Xiao-Ming Cao Qun Sha Ding-Guo Lin Jia-Ming |
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| Affiliation: | [1]Department of Biomedical Engineering, Beijing Institute of Technology, Beijing 100081, China; [2]Department of Opto-electronic Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | Optical tweezers have been a valuable research tool since theirinvention in the 1980s. One of the most important developments inoptical tweezers in recent years is the creation of two-dimensionalarrays of optical traps. In this paper, a method based oninterference is discussed to form gradient laser fields, which maycause the spatial modulation of particle concentration. Theparameters related to the optical tweezers array are discussed indetail and simulated by the Matlab software to show the influence ofimportant parameters on the distribution of particle concentration.The spatial redistribution of particles in a laser interferencefield can also be predicted according to the theoretical analysis. |
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| Keywords: | optical tweezers array gradient force trapping efficiency spatial modulation |
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