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arXiv 2107.03528physics.optics
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利用光子晶体和介电微球单层的混合表面的Refractive index传感

Refractive index sensing with hybrid surfaces of photonic crystals and dielectric microsphere monolayers

Cheng Fang, Qingqing Shang, Fen Tang, Songlin Yang, Ran Ye

摘要:

在这项工作中,一个折射率(RI)传感器的比色检测和光学传感能力的有效整合已经开发出来。比色检测依赖于光子晶体(PC)衬底的结构色对背景RI变化的敏感性,而光学传感通过测量介电微球的放大能力来执行,这取决于光子纳米喷射的位置。基于这一概念,我们成功地将直径为35 μ m的钛酸钡玻璃微球、直径为4.9 μ m的聚苯乙烯和二氧化硅微球单层组装在一维或二维PC基底上,实现了在各种液体中的RI传感。此外,开发的RI传感器是高度兼容的商业光学显微镜和适用于RI传感的面积小到几十平方微米。

英文摘要:

In this work, a refractive index (RI) sensor with an effective integration of colorimetric detection and optical sensing capabilities has been developed. Colorimetric detection relies on the sensitivity of the structural color of photonic crystal (PC) substrates to the changes in background RI, while the optical sensing is performed by measuring the magnification abilities of the dielectric microspheres, which depends on the position of the photonic nanojet. Based on this concept, we have successfully assembled 35 μm-diameter barium titanate glass microspheres, 4.9 μm-diameter polystyrene and silica microsphere monolayers on 1D or 2D PC substrates to perform RI sensing in various liquids. In addition, the developed RI sensor is highly compatible with commercial optical microscopes and applicable for RI sensing in areas as small as tens of square microns.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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