Presidential Young Investigators Award: Combustion Synthesisof Diamond

一种低压平焰燃烧器将用于生长金刚石 在高度受控和良好表征的条件下。 低压多孔塞稳定火焰的原理很简单 三维结构，使其能够准确地 建模和诊断探测，提供了一个重要的 与其他类型的钻石相比， 生长反应堆 稳定的物种浓度将是 在温度控制的 将基板放置在流动中。 激进分子和 温度将使用激光诱导 荧光，共振增强多光子电离，和 拉曼散射技术。 IR/可见光和生成将 可用于检测吸附在基底上的分子， 金刚石生长 反应流数值模型将 已开发和预测的物种、温度和生长速率 将与实验测量值进行比较。 金刚石薄膜在摩擦学、光学、 和电子应用，但目前的质量- 生长的膜不足以用于大多数用途。 实验 计划将是第一个研究钻石生长在一个 彻底特征化的环境，并应产生 关于负责以下事项的过程的重要信息： 最大化增长率和控制质量。

A low pressure, flat flame burner will be used to grow diamond under highly controlled and well characterized conditions. Low pressure, porous plug-stabilized flames have a simple one- dimensional structure which lend themselves to accurate modeling and diagnostic probing, providing a significant advantage for fundamental studies over other types of diamond growth reactors. Stable species concentrations will be measured in the boundary layer of a temperature-controlled substrate placed in the flow. Radical species and temperatures will be measured using laser-induced fluorescence, resonantly-enhanced multiphoton ionization, and Raman scattering techniques. IR/visible sum generation will be used to detect molecules adsorbed on the substrate during diamond growth. A reacting flow numerical model will be developed and predicted species, temperature, and growth rates will be compared to experimentally measured values. Diamond films appear very promising for tribological, optical, and electronic applications, but the quality of currently- grown films is insufficient for most uses. The experiments planned will be the first to study diamond growth in a thoroughly characterized environment, and should yield significant information on the processes responsible for maximizing growth rate and controlling quality.