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    • 9. 发明授权
    • Liquid reagent delivery system with constant thermal loading of vaporizer
    • 具有蒸发器恒定热负荷的液体试剂输送系统
    • US6099653A
    • 2000-08-08
    • US989873
    • 1997-12-12
    • Gautam BhandariThomas H. Baum
    • Gautam BhandariThomas H. Baum
    • C23C16/40C23C16/448C23C16/00
    • C23C16/4481C23C16/409
    • A liquid reagent delivery and vaporization system, including a housing defining a flow passage for flow of a process fluid therethrough. A vaporizer element is positioned within the housing and includes a heated vaporization surface. Liquid reagent is selectively delivered to the heated vaporization surface, to vaporize the liquid reagent and form reagent vapor for flow through the flow passage of the housing, e.g., to a chemical vapor deposition reactor for deposition of a film on a substrate. A thermal damping fluid source is arranged to selectively deliver a thermal damping fluid into the flow passage to maintain a predetermined thermal condition therein. For example, the system may be arranged to selectively terminate delivery of liquid reagent to the vaporization surface and to contemporaneously selectively initiate delivery of the thermal damping fluid into the flow passage to maintain a thermal condition thermally matches the vaporization conditions when the liquid reagent is vaporized. The use of a thermal damping fluid prevents the occurrence of undesired thermal gradients in the system when the system is cyclically operated to vaporize reagent liquid.
    • 一种液体试剂递送和蒸发系统,包括限定用于流过其中的流体流动的流动通道的壳体。 蒸发器元件位于壳体内并且包括加热的蒸发表面。 液体试剂被选择性地输送到加热的蒸发表面,以蒸发液体试剂并形成用于流过壳体的流动通道的试剂蒸气,例如到化学气相沉积反应器,用于在基底上沉积膜。 热阻尼流体源被布置成选择性地将热阻尼流体输送到流动通道中以在其中保持预定的热条件。 例如,该系统可以被布置成选择性地将液体试剂的输送终止于蒸发表面,并且同时选择性地启动热阻尼流体进入流动通道的传递,以保持热条件与液体试剂蒸发时的蒸发条件热匹配 。 当系统循环操作以蒸发试剂液体时,使用热阻尼流体防止系统中出现不期望的热梯度。
    • 10. 发明授权
    • Hydrogen sensor utilizing rare earth metal thin film detection element
    • 氢传感器利用稀土金属薄膜检测元件
    • US6006582A
    • 1999-12-28
    • US42698
    • 1998-03-17
    • Gautam BhandariThomas H. Baum
    • Gautam BhandariThomas H. Baum
    • G01N21/77H01L43/10G01N7/00G01N21/00G01N30/96H01L47/00
    • H01L43/10G01N21/783G02F2202/34
    • A hydrogen sensor for the detection of hydrogen, e.g., in an environment susceptible to the incursion or generation of hydrogen. The sensor includes a rare earth metal thin film arranged for exposure to the environment and exhibiting a detectable change of physical property, e.g., optical transmissivity, electrical resistivity, magneto-resistance, and/or photoconductivity, when the rare earth metal thin film is contacted with hydrogen gas. The sensor may include an output assembly for converting the physical property change to a perceivable output. The rare earth metal thin film may correspondingly be used for signal processing applications, in which the rare earth metal thin film is contacted with hydrogen gas, and a predetermined voltage signal is selectively imposed across the rare earth metal thin film, to selectively electrically switch the film between mirror and window states, with a response being generated according to which of the mirror and window states is present.
    • 用于检测氢的氢传感器,例如在易于入侵或产生氢的环境中。 该传感器包括稀土金属薄膜,该稀土金属薄膜布置成暴露于环境中,并且当稀土金属薄膜被接触时,其表现出可检测的物理性能变化,例如光透射率,电阻率,磁阻和/或光导电性 与氢气。 传感器可以包括用于将物理属性变化转换为可感知输出的输出组件。 稀土金属薄膜可以相应地用于信号处理应用,其中稀土金属薄膜与氢气接触,并且预定的电压信号选择性地施加在稀土金属薄膜上,以选择性地电开关 镜像和窗口状态之间的电影,根据哪个镜像和窗口状态存在响应。