多涡旋波束对复杂粒子系散射与微操控及旋转多普勒效应解析解研究

研究涡旋波束与复杂介质粒子系相互作用物理过程，对获得多维度时空结构新型波场，新型波场对原子、分子及微纳结构等体系调控，发现新现象和揭示新机理等具有重要应用价值。本项目重点针对多涡旋波束合成场矢量描述和收敛展开式，建立多涡旋波束对单/多个、均匀/非均匀、手征/各向异性介质粒子系散射与微操控模型，突破多粒子相干散射理论和非均匀粒子迭代算法尺寸限制关键技术；理论结合实验研究散射、辐射力、扭矩及结合力随波束极化、模态、入射角、介电参数、尺寸和空间取向变化规律。分析入射频率、轨道角动量、速度和角速度、介质结构等对运动粒子散射特性影响，阐述旋转和几何多普勒效应机理。通过电磁/光散射理论，结合动量和角动量定理及实验，阐释散射、操控力及多普勒频移物理过程，揭示微宏观物理机理。研究成果为涡旋波束散射在粒度分析与诊断、细胞融合与基因重组、目标识别与微运动探测等领域应用提供理论依据和技术支撑。

Research on the physical process of the interactions between the vortex beams and the complex particles has a significant applied value at the acquisition of multiple dimensions time-space structural wave field, modulation of new wave field on atom, molecule and micro and nano structure, and discovery of new phenomenon and mechanism. Focusing on the description and convergent expansion of multiple vortex beams, the scattering and micro-manipulation model of single/multiple, homogeneous /inhomogeneous, chiral/anisotropic particles system by multiple vortex beams are built. Breakthrough to key technology such as coherent scattering and multilayered size limitations is brought forward. In addition, the distributions of scattering, radiation force, torque and binding force with variations of polarization, topological charge, incident angle, dielectric parameters, size and distribution are investigated combing theoretical simulation and experiment measurement. The influence of the frequency, orbital angular momentum, motion and spinning velocity, material structure on the scattering properties of motional particles are analyzed. The rotational Doppler and geometric phase Doppler shift are further illustrated. Utilizing the electromagnetic/light scattering theory, combined with the momentum and angular momentum theorem, as well as experimental verification, the physical process and macro and micro physical mechanism are interpreted in detail. The theory will provide theoretical basis and technical support for the research fields of particle sizing and diagnosis, cell fusion and genetic recombination, target recognition and micromotion detection.