中心出站博士后Rahul Kumar Gangwar（现为University of Delhi助理教授）在硅基片上传感相关工作发表在Frontiers in Physics期刊。该工作得到了国家重点研发计划(2021YFB2800400)、国家自然科学基金(62001010)，北京市自然科学基金(Z210004)的部分资助。

本文提出了一种基于多孔硅（porous silicon）的微环谐振腔传感器，可同时用于温度和癌细胞检测。porous silicon由于内部表面积大，可以使外部材料直接与光场相互作用。微环谐振器的透射光谱中的谐振波长对外界环境变化非常敏感，基于此特性本文通过全矢量有限元分析对不同参数对传输谱特性的影响进行了详细分析，通过优化参数取得的最大灵敏度为150 pm/°C（在20 ~ 100°C的工作温度范围内），针对肿瘤细胞的检测灵敏度为284.0306 nm/RIU。

摘要: In this article, a microring resonator sensor based on porous silicon is proposed for temperature and cancer cell detection, simultaneously. The porous behavior of silicon with a large internal surface area allows external materials to interact directly with the guided modes. The resonance wavelength in the transmission spectrum of the microring resonator is very sensitive to external environmental properties such as refractive index and temperature. The transmission characteristics of the proposed sensor were numerically determined by full vectorial finite element analysis. The achieved maximum sensitivity of the proposed sensor with optimized parameters was 150 pm/°C for an operational temperature range of 20–100°C and 284.0306 nm/RIU for operational cancer cell detection, respectively. The results presented here suggest the microring resonator sensor can be used in the fields of environment sensing, temperature sensing, chemical sensing, and biosensing.

文章链接：

https://www.frontiersin.org/articles/10.3389/fphy.2022.929033/full?utm_source=dlvr.it&utm_medium=twitter

文章链接：

https://doi.org/10.1364/OL.459876