Dynamic behavior of aerosol particles under laser irradiation and production of multi-component particles

1. 制作了悬浮悬浮的四极电池，并对其性能进行了理论和实验研究。单个直径约为10um的碳颗粒稳定悬浮数小时以上，在一定条件下，一组多颗粒也准稳定地保持在细胞中心附近。利用光子相关光谱测量粒子的布朗扩散系数，从理论上计算了粒子在不同粒子材料、介质气体、激光波长和强度条件下的温升，并进行了实验验证。利用与记忆系统相连的摄像机，实验获得了细胞内运动粒子在激光照射下的运动轨迹。根据这些数据，可以估计激光照射下作用在粒子上的声光力。制备了银的超细气溶胶颗粒，并开发了一种不团聚的浓缩方法。这些高浓度和分散颗粒的物理性质正在用几种方法进行研究。

1. A quadrupole cell was made for levitating a aerosol particle and its performance was examined both theoretically and experimentally. Single carbon particle having about 10um was levitated stably for more than several hours, and under a certain condition a group of many particles was also hold quasi-stably at near center of the cell.2. Temperature rises of particle in variety of conditions of particle materials, medium gas, wavelength and intensity of laser were calculated theoretically and confirmed experimentally by measuring Brownian diffusivity of particles with photon correlation spectroscopy.3. Trajectories of moving particles in the cell under laser light irradiation were obtained experimentally by using a video camera connected to memorizing system. Photophonetic forces acting on a particle under laser irradiation can be were estimated based on those data.4. Ultrafine aerosol particles of silver were produced and a method was developed to concentrate particles without agglomeration. Physical properties of those high concentrated and dispersed particles are being examined by several methods.