Packaged Droplet Microresonator for Thermal Sensing with High Sensitivity.
Packaged Droplet Microresonator for Thermal Sensing with High Sensitivity.
复制标题
用于高灵敏度热传感的封装液滴微谐振器
DOI：
10.3390/s18113881
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发表时间：
2018-11-11
期刊：
影响因子：
--
通讯作者：
Xie S
中科院分区：
文献类型：
--
作者：
Chen X;Fu L;Lu Q;Wu X;Xie S
液滴和准液滴回音壁模式（WGM）微腔由于其增强了液体和WGM场之间的空间重叠，特别是在传感应用中，近年来得到了广泛的研究。但其腔体结构的脆弱性和液体的易蒸发性限制了其实际应用。在这里，稳定的，封装，准液滴和液滴微腔的建议和制造的高灵敏度的热传感。利用米氏理论分析了传感器的灵敏度和电磁场强度分布，并首次提出了准液滴的定量定义。通过将染料材料直接掺杂到液体中，实验证明了具有高达205.3 pm/°C的高热灵敏度的激光封装液滴和准液滴微腔传感器。高灵敏度，易于制造，和机械鲁棒性的光流体，封装液滴微谐振器使其成为未来集成光子器件的一个有前途的候选人。
Liquid droplet and quasi-droplet whispering gallery mode (WGM) microcavities have been widely studied recently for the enhanced spatial overlap between the liquid and WGM field, especially in sensing applications. However, the fragile cavity structure and the evaporation of liquid limit its practical applications. Here, stable, packaged, quasi-droplet and droplet microcavities are proposed and fabricated for thermal sensing with high sensitivity. The sensitivity and electromagnetic field intensity distribution are analyzed by Mie theory, and a quantified definition of the quasi-droplet is presented for the first time to the best of our knowledge. By doping dye material directly into the liquid, lasing packaged droplet and quasi-droplet microcavity sensors with a high thermal sensitivity of up to 205.3 pm/°C are experimentally demonstrated. The high sensitivity, facile fabrication, and mechanically robust properties of the optofluidic, packaged droplet microresonator make it a promising candidate for future integrated photonic devices.
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