Vertically coupled polymer microracetrack resonators for Label-Free   Biochemical sensors
  We report on the efficient design and fabrication of polymeric microracetrack optical resonators for label-free biosensing purposes. Vertically-coupled microresonators immersed in deionised water display high Q-factors (>35000) and finesses up to 25. A surface sensing experiment performed with these microresonators using 5-TAMRA cadaverine as a test molecule demonstrated both the high sensitivity and low detection limit of our device. 
Camille Delezoide, Marion Salsac, Joseph Lautru, Herv\'e Leh, Claude   Nogu\`es, Joseph Zyss, Malcolm Buckle, Isabelle Ledou...
physics.optics