B. Elzein

Ultra-sensitive hybrid metamaterial–plasmonic sensor based on a split-ring resonator metasurface for refractive index biosensing

Optical biosensors have become essential tools for rapid and label-free detection of biological analytes in medical diagnostics and environmental monitoring. However, conventional plasmonic sensors often suffer from broad resonance linewidths and limited light–matter interaction, which constrain their sensing resolutio...