Photonic Crystal Biosensor for Blood Analysis

p {margin: 0; padding: 0;} .ft00{font-size:21px;font-family:NimbusSansBold;color:#000000;} .ft01{font-size:18px;font-family:NimbusSansBold;color:#000000;} .ft02{font-size:15px;font-family:OpenSymbol;color:#000000;} .ft03{font-size:18px;font-family:NimbusSans;color:#000000;} PHOTONIC CRYSTAL BIOSENSOR FOR BLOOD ANALYSIS Introduction  Blood analysis important for detecting hematological disorders  Diseases cause changes in blood composition and refractive index  Photonic crystal biosensors detect refractive index changes Design Structure  GaN substrate with air holes in photonic crystal configuration  Line defect waveguide introduced in photonic crystal  Elliptical sensing nodes in defect with blood component as analyte Simulation Results  Photonic bandgap from 1340-1570 nm  Resonance wavelength shifts from 1556 to 1528 nm for RI 1.33 to 1.45  Quality factor around 210  High sensitivity of 230 nm/RIU  Allows detection of small refractive index changes Conclusion  Compact photonic crystal sensor designed for blood analysis  Resonance peak shift allows detection of variations in blood composition  High sensitivity enables identifying minor refractive index changes  Can aid early diagnosis of hematological disorders Key Highlights  Photonic crystals allow creating integrated optical biosensors  Refractive index changes of blood composition detected by resonance shift  High Q-factor gives good confinement for sensitivity  Compact on-chip GaN photonic crystal sensor demonstrated