CAREER: Determination of Particle Composition in Combustion Synthesis Flames via Laser Spark Spectroscopy

摘要-Wooldridge这是一项关于气相燃烧合成中的颗粒形成和生长的研究，用于生产各种材料。利用激光火花光谱技术研究了燃烧合成火焰中颗粒组成的演化过程。参数实验研究详细描述了影响颗粒组成和形态的燃烧器条件。气溶胶动力学方程被用作模拟粒子生长的基础，并根据需要对其进行改进以模拟单组分和多组分粒子合成。激光散射实验提供了颗粒大小和数密度的数据，以便与模型进行比较。在气相燃烧合成中，颗粒组成的评价和控制是很重要的，特别是当火焰中存在几个凝聚相物种时。由这些体系产生的纳米复合粒子可以表现出不同的形貌和化学组成。

Abstract - Wooldridge This is an investigation of particle formation and growth in gas-phase combustion synthesis as used for the production of various materials. The evolution of particle composition in combustion synthesis flames is characterized using laser spark spectroscopy. Parametric experimental studies detail the burner conditions that affect particle composition and morphology. The aerosol dynamic equation is used as the basis modeling particle growth and in refined as necessary to model single component and multicomponent particle synthesis. Laser scattering experiments provide data on particle size and number density for comparison with the models. Evaluation and control of particle composition in gas-phase combustion synthesis is important, particularly when several condensed-phase species are present in the flame. The nanocomposite particles created by these systems can exhibit a variety of morphologies and chemical compositions.