在微型反应器中使用多重CARS显微镜进行度概况的实地定量测量,分辨率为亚微米,使用多重CARS显微镜
Dawn Schafer1, Jeff A Squier, Jan van Maarseveen
1Department of Physics, Colorado School of Mines, 1523 Illinois Street, Golden, Colorado 80401, USA.
Journal of the American Chemical Society
|August 9, 2008
概括
这项研究证明了微流体反应器中化学反应的无标签,现场成像. 定量振动光谱技术实现了反应物和产品的高空间和时间分辨率.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 频谱学是一种光谱学.
- 微流体学 微流体学
背景情况:
- 了解微流体设备中的反应动态对于过程优化至关重要.
- 化学物种的实时,现场监测通常受分辨率和灵敏度的限制.
- 无标签的技术是可取的,以避免干扰反应通路.
研究的目的:
- 开发和演示一种无标签的方法,用于微流体反应器内的度概况的现场定量成像.
- 为了实现亚微米空间分辨率和毫秒时间分辨率来监测化学反应.
- 用一种已知的基本酸反应来验证该技术.
主要方法:
- 使用连贯抗斯托克斯拉曼散射 (CARS) 显微镜以光谱分辨的方式.
- 采用定量振动光谱技术进行无标签分析.
- 在微流体反应堆设置中进行现场测量.
主要成果:
- 实现了反应剂和产品度配置文件的定量成像,具有亚微米空间分辨率.
- 证明了在特定位置的毫秒时间尺度测量.
- 对检测到的化学物种获得的mM灵敏度.
- 成功地将该方法应用于一个基本的酸反应.
结论:
- 连贯抗Stokes拉曼散射显微镜使无标签的微流体反应在现场进行定量监测.
- 开发的技术为化学过程分析提供了高空间和时间分辨率.
- 这种方法为微观反应动力学和反应机制提供了宝贵的见解.
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