The plasmonic chip, which has wavelength‐size grating pattern coated with a thin silver or gold film, is applied to a sensitive biosensor because it can provide the enhanced fluorescence excited by the surface plasmon field. We have already reported on the sensitive immunodetection with the plasmonic sensor chip under the illumination system from top panel of a plasmonic chip. In this study, the structure of a biosensor chip was optimized for the illumination system from rear panel and the detection sensitivity of the system under the back illumination was compared with that for the other conditions, including the top illumination system.

中文翻译：

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背照明系统中的等离子芯片增强型荧光生物传感器

具有波长大小的光栅图案并涂有薄银或金膜的等离激元芯片被应用于灵敏的生物传感器，因为它可以提供由表面等离激元场激发的增强荧光。我们已经从等离子芯片顶板的照明系统上报道了用等离子传感器芯片进行灵敏免疫检测的报道。在这项研究中，从后面板为照明系统优化了生物传感器芯片的结构，并将系统在背面照明下的检测灵敏度与其他条件（包括顶部照明系统）的检测灵敏度进行了比较。