Potential energy profile of colloidal nanoparticles in optical confinement
文献类型：期刊论文
| 作者 | Fu, JX ; Zhan, QW ; Lim, MY ; Li, ZY ; Ou-Yang, HD |
| 刊名 | OPTICS LETTERS
 |
| 出版日期 | 2013 |
| 卷号 | 38期号:20页码:3995 |
| ISSN号 | 0146-9592 |
| 通讯作者 | Ou-Yang, HD (reprint author), Lehigh Univ, Dept Phys, Bldg 16, Bethlehem, PA 18015 USA. |
| 中文摘要 | An optical bottle method is developed to determine the potential-energy profile of colloidal Rayleigh nanoparticles in an optical trap. The three-dimensional distribution of fluorescent particles in the trap is measured by laser scanning confocal fluorescence microscopy. At sufficiently low concentrations at which interactions between the particles are negligible, the single-particle trapping potential-energy profile is determined from the equilibrium number-density profile by use of the Boltzmann distribution. Fluorescence imaging as well as calculations based on a discrete dipole approximation show that effects due to scattering forces are negligible for polystyrene particles of size less than 10% of the wavelength of the trapping laser, thus justifying the assumption of conservative forces in the equilibrium potential-energy determinations. The new optical bottle method measures the entire two-dimensional trapping-potential profile for an individual nanoparticle without the restriction that only one particle be contained in the trap, thus obviating the need for high laser power. (C) 2013 Optical Society of America |
| 资助信息 | National Science Foundation (NSF) [DMR-0923299] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57345]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Fu, JX,Zhan, QW,Lim, MY,et al. Potential energy profile of colloidal nanoparticles in optical confinement[J]. OPTICS LETTERS,2013,38(20):3995. |
| APA | Fu, JX,Zhan, QW,Lim, MY,Li, ZY,&Ou-Yang, HD.(2013).Potential energy profile of colloidal nanoparticles in optical confinement.OPTICS LETTERS,38(20),3995. |
| MLA | Fu, JX,et al."Potential energy profile of colloidal nanoparticles in optical confinement".OPTICS LETTERS 38.20(2013):3995. |
入库方式： OAI收割
来源：物理研究所
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