在真空镀膜问题中, 对蒸发出的有机分子颗粒作粗粒化处理, 在假定其形貌为球体粒子条件下, 针对由一定数量的、 随机分布的蒸发微粒组成的多粒子体系, 利用电磁学广义 Lorenz-Mie 理论研究了该多粒子体系对光的消光特性. 计算结果表明, 随着主粒子粒径的增大和数量的增加, 消光系数呈现出先增大后减小的趋势, 体系消光系数存在极大值; 当平面波入射时, 入射光能量相对高斯光束具有更大的损耗. 另外, 讨论了不同主粒子尺寸参数下电磁场幅值的分布特性.
Assume that the vapor of organic polymers in a vacuum deposition process is composed of spherical particle by coarse graining to form a multiple particle system, and consider extinction properties of light for such a system consisting of up to 3 000 randomly distributed particles. The generalized Lorenz-Mie theory from electromagnetic theory is used. The results show that, with the increase of the size and number of primary particles, the extinction coefficients go up at the beginning and fall down afterwards, indicating the presence of maximum values in the extinction coefficients. The energy of a plane incident wave decays faster than that of a Gaussian wave. Properties of electromagnetic fields under different primary particle sizes are also studied.
[1] 吕斯骅, 朱印康. 近代物理实验技术 [M]. 北京: 高等教育出版社, 1991: 144-188.
[2] 尚世铉, 单锦安. 近代物理实验技术(Ⅱ) [M]. 北京: 高等教育出版社, 1993: 315-351．
[3] 杨辉, 王维洁, 季静佳, 等. 有机电致发光器件(OLED)的制备方法和工艺 [J]. 人工晶体学报, 2007, 36(1): 226-237.
[4] Suzuki K, Mori K, Ye R. Effect of magnetic field on polymerization of vapor deposited thin films of the triazine-dithiol derivatives [R]. [S.l.]: Iwatei Prefecture Technological Center Research Review, 2002.
[5] Ji Z G, Wong K W, Tse P K, et al. Copper phthalocyanine film grown by vacuum deposition under magnetic field [J]. Thin Solid Films, 2002, 402: 79-82.
[6] Ashkin A. Forces of a single-beam gradient laser trap on a dielectric sphere in the ray optics regime [J]. Biophysical Journal, 1992, 61(2): 569-582.
[7] Simpson S H, Hanna S. Numerical calculation of interparticle forces arising in association with holographic assembly [J]. JOSA A, 2006, 23(6): 1419-1431.
[8] 韩正甫, 郭光灿. 单束激光势阱中的瑞利粒子 [J]. 中国科学技术大学学报, 1991, 21(2): 146-151.
[9] Atkinson R. Light scattering by irregularly shapedparticles [J]. Journal of Modern Optics, 1980, 27(11): 1503-1503.
[10] 黄朝军, 刘亚锋, 吴振森. 烟尘簇团粒子光学截面和散射矩阵的数值计算 [J]. 物理学报, 2007, 56(7): 4068-4074.
[11] Witten T T, Sander L. Diffusion-limited aggregation [J]. Physical Review B, 1983, 27(9): 5686-5697.
[12] Meakin P. Formation of fractal clusters and networks by irreversible diffusion-limited aggregation [J]. Physical Review Letters, 1983, 51(13): 1119-1122.
[13] Liu F, Yang M. Influence of polydisperse distributions of both primary particle and aggregate size on soot temperature in low-fluence LII [J]. Applied Physics B: Lasers and Optics, 2006, 83(3): 383-395.
[14] Mackowski D W. Calculation of total cross sections of multiple-sphere clusters [J]. JOSA A, 1994, 11(11): 2851-2861.
[15] Mie G. Beitr¨age zur optik tr¨uber medien, speziell kolloidaler metall¨osungen [J]. Annalen der Physik, 1908, 330(3): 377-445.
[16] Gouesbet G, Maheu B. Light scattering from a sphere arbitrarily located in a Gaussian beam, using a Bromwich formulation [J]. JOSA A, 1988, 5(12): 1427-1443.
[17] Ren K, Gouesbet G. Prediction of reverse radiation pressure by generalized Lorenz-Mie theory [J]. Applied Optics, 1996, 35(15): 2702-2710.
[18] Ren K, Greha G. Radiation pressure forces exerted on a particle arbitrarily located in a Gaussian beam by using the generalized Lorenz-Mie theory, and associated resonance effects [J]. Optics Communications, 1994, 108(4): 343-354.
[19] Xu Y L. Electromagnetic scattering by an aggregate of spheres [J]. Applied Optics, 1995, 34(21): 4573-4588.
[20] Mackowski D W. Analysis of radiative scattering for multiple sphere configurations [J]. Proceedings of the Royal Society of London Series A: Mathematical and Physical Sciences, 1991, 433(1889): 599-614.
[21] Bohren C F, Huffman D R. Absorption and scattering of light by small particles [M]. Weinheim:Wiley-VCH, 2008.
[22] Mackowski D W, Mishchenko M I. Calculation of the T-matrix and the scattering matrix for ensembles of spheres [J]. JOSA A, 1996, 13(11): 2266-2278.
[23] 张伟, 路远, 杜石明, 等. 球体粒子Mie散射特性分析 [J]. 光学技术, 2010, 36(6): 936-939.
[24] 白璐, 吴振森, 陈辉, 等. 高斯波束入射下串粒子的散射问题 [J]. 物理学报, 2005, 54(5): 2025-2029.
[25] 王阳, 顾冬红, 干福熹. 亚酞菁薄膜的折射率和吸收特性 [J]. 光学学报, 2001, 21(5): 634-637.
[26] 魏斌, 吴谊群, 顾冬红, 等. 偶氮金属螯合物薄膜的光学常数和吸收光谱 [J]. 光学学报, 2004, 24(6): 739-742
