Photonic crystal resonator integrated in a microfluidic system
Photonic crystal resonator integrated in a microfluidic system
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DOI：
10.1364/ol.33.001623
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发表时间：
2008-07-15
期刊：
影响因子：
3.6
通讯作者：
Mogensen, K. B.
中科院分区：
文献类型：
--
作者：
Nunes, P. S.;Mortensen, N. A.;Mogensen, K. B.
我们报道了一种由硅基一维光子晶体、集成平面波导和电绝缘流体通道组成的新型光流体系统。一列柱在微流体通道设计的电色谱用作谐振器对柱上无标签的折射率检测。谐振器在氧氮化硅平台上制作，支持电渗透流，工作在λ = 1.55 μ m，将不同的折射率为n=1.3330 ~ 1.3616的乙醇水溶液泵入柱/谐振器中，记录透射光谱。共振波长的线性位移产生的最大灵敏度为Delta λ /Delta n=480 nm/RIU（折射率单位），最小差为Delta n= 0.007 RIU。(C) 2008美国光学学会。
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 = 1.55 mu m. Different aqueous solutions of ethanol with refractive indices ranging from n=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=480 nm/RIU (refractive index unit), and a minimum difference of Delta n = 0.007 RIU was measured. (C) 2008 Optical Society of America.