A Q-switched sensing mechanism that converts refractive index changes into peak intensity changes via loss modulation in a 3D BIC metasurface achieves 928%/RIU sensitivity, 10^-5 RIU LOD, and 129 aM exosome detection in a compact LED-driven system.
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Loss-driven miniaturized bound state in continuum biosensing system
A Q-switched sensing mechanism that converts refractive index changes into peak intensity changes via loss modulation in a 3D BIC metasurface achieves 928%/RIU sensitivity, 10^-5 RIU LOD, and 129 aM exosome detection in a compact LED-driven system.