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Photonic crystal resonator integrated in a microfluidic system

机译:集成在微流体系统中的光子晶体谐振器

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We report on a novel optofluidic system consisting of a silica-based 1D photonic crystal, integrated planar waveguides, and electrically insulated fluidic channels. An array of pillars in a microfluidic channel designed for electrochromatography is used as a resonator for on-column label-free refractive index detection. The resonator was fabricated in a silicon oxynitride platform, to support electro-osmotic flow, and operated at lambda velence 1.55 (mu)m. Different aqueous solutions of ethanol with refractive indices ranging from n velence 1.3330 to 1.3616 were pumped into the column/resonator, and the transmission spectra were recorded. Linear shifts of the resonant wavelengths yielded a maximum sensitivity of (DELTA)(lambda)/(DELTA)n velence 480 nm/RIU (refractive index unit), and a minimum difference of (DELTA)n velence 0.007 RIU was measured.
机译:我们报告了一种新型的光流体系统,该系统由基于二氧化硅的一维光子晶体,集成的平面波导和电绝缘的流体通道组成。设计用于电色谱的微流体通道中的柱阵列用作共振器,用于无柱上标记的折射率检测。该谐振器在氮氧化硅平台上制造,以支持电渗流,并以λ速度1.55μm运行。将折射率范围为1.3330至1.3616的不同乙醇水溶液泵入色谱柱/谐振器,并记录透射光谱。共振波长的线性位移产生最大灵敏度Δλ/Δnvelence 480nm / RIU(折射率单位),并且测量了Δnvelence的最小差为0.007RIU。

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