Ling-Fang Wang

Ultrahigh-Sensitivity RI Sensor via Cascaded Microcavities With Direct Liquid Core Interaction

Refractive index (RI) sensors are indispensable for label-free biochemical analysis, environmental monitoring, and food safety. However, conventional optical sensors fundamentally rely on weak evanescent fields for analyte interaction, creating a persistent sensitivity bottleneck. Here, we overcome this limitation by i...