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Facile fabrication of microfluidic surface-enhanced Raman scattering devices via lift-up lithography

机译:通过提升光刻技术轻松制造微流体表面增强拉曼散射装置

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摘要

We describe a facile and low-cost approach for a flexibly integrated surface-enhanced Raman scattering (SERS) substrate in microfluidic chips. Briefly, a SERS substrate was fabricated by the electrostatic assembling of gold nanoparticles, and shaped into designed patterns by subsequent lift-up soft lithography. The SERS micro-pattern could be further integrated within microfluidic channels conveniently. The resulting microfluidic SERS chip allowed ultrasensitive in situ SERS monitoring from the transparent glass window. With its advantages in simplicity, functionality and cost-effectiveness, this method could be readily expanded into optical microfluidic fabrication for biochemical applications.
机译:我们描述了一种微流体芯片中灵活集成的表面增强拉曼散射(SERS)基板的简便且低成本的方法。简而言之,通过金纳米粒子的静电组装来制造SERS基板,并通过随后的提起软光刻将其成型为设计图案。 SERS微模式可以方便地进一步整合到微流体通道中。所得的微流体SERS芯片可从透明玻璃窗进行超灵敏的原位SERS监测。由于其在简单性,功能性和成本效益方面的优势,该方法可以很容易地扩展到用于生化应用的光学微流体制造。

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