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Designing an Ag/Au Multilayer SPR Stack: Quarter-Wave Basics for Newbies

Introduction Surface Plasmon Resonance (SPR) is a resonant optical phenomenon arising at the interface between a dielectric and a metal, enabling the detection of minute changes in refractive index. Over the past few decades, SPR has become foundational to numerous sensing technologies, particularly in biosensing and chemical detection. The sensitivity and specificity of SPR sensors […]

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Photonic crystals sensor using TMM

Photonic crystals (PhCs) are periodic dielectric structures that affect the motion of photons in much the same way that the periodic potential in a semiconductor crystal affects electrons. The ability of photonic crystals to create photonic band gaps (PBGs) has led to numerous applications, including optical filters, waveguides, and more recently, sensors. Among the various […]