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

1. 制造了一个用于悬浮气溶胶颗粒的四极池，并通过理论和实验检验了其性能。约10um的单个碳粒子可以稳定悬浮几个小时以上，并且在一定条件下，许多粒子的集合也可以准稳定地保持在细胞的中心附近。 2．从理论上计算了不同颗粒材料、介质气体、激光波长和强度条件下颗粒的温升，并通过光子相关光谱测量颗粒的布朗扩散率进行了实验证实。 3．通过使用连接到存储系统的摄像机，实验获得了激光照射下细胞内运动粒子的轨迹。根据这些数据可以估计激光照射下作用在粒子上的光声力。 4．生产了超细银气溶胶颗粒，并开发了一种浓缩颗粒而不附聚的方法。正在通过多种方法检查这些高浓度和分散颗粒的物理性质。

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.