On-chip cavity-enhanced absorption spectroscopy using a white light-emitting diode and polymer mirrors
On-chip cavity-enhanced absorption spectroscopy using a white light-emitting diode and polymer mirrors
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DOI：
10.1039/c4lc01264j
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发表时间：
2015-01-01
期刊：
影响因子：
6.1
通讯作者：
Morgan, Hywel
中科院分区：
文献类型：
--
作者：
Rushworth, Cathy M.;Jones, Gareth;Morgan, Hywel
我们已经开发了一种一次性的微流控芯片与集成腔镜组成的两片3M Vikuiti（TM）增强镜面反射器II（ESRII）的薄膜，用于执行腔增强吸收光谱与白色发光二极管（LED）。与用没有腔镜的芯片进行的测量相比，吸收路径长度在544 nm处增强了28倍，灵敏度增强了约5倍，使得微摩尔范围的检测极限仅在50 μ m的光路长度中实现。
We have developed a disposable microfluidic chip with integrated cavity mirrors comprised of two pieces of 3M Vikuiti (TM) enhanced specular reflector II (ESRII) film, for performing cavity-enhanced absorption spectroscopy with a white light-emitting diode (LED). Compared to measurements made with a chip without cavity mirrors, the absorption path length is enhanced by a maximum factor of 28 at 544 nm, and the sensitivity is enhanced by approximately 5 times, enabling micromolar range detection limits to be achieved in an optical path length of only 50 mu m.