6533b7dafe1ef96bd126e0a2
RESEARCH PRODUCT
Development of optical WGM resonators for biosensors
Janis AlnisRoman ViterKārlis GrundšteinsA. UbeleA. PirktinaAigars AtvarsInga Bricesubject
Optical fiberMaterials sciencebusiness.industryResonancePhysical opticslaw.inventionResonatorSurface coatinglawOptoelectronicsNanorodWhispering-gallery wavebusinessBiosensordescription
Whispering Gallery Mode (WGM) resonators are very sensitive to nanoparticles attaching to the surface. We simulate this process using COMSOL Wave Optics module. Our spherical WGM resonators are produced by melting a tip of an optical fiber and we measure optical Q factors in the 105 range. Molecular oxygen lines of the air in the 760 nm region are used as reference markers when looking for the shifts of the WGM resonance lines. We demonstrate WGM microresonator surface coating with a layer of ZnO nanorods as well as with polystyrene microspheres. Coatings produce increased contact surface. Additional layer of antigens/antibodies will be coated to make high-specificity biosensors.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-12-07 | Biophotonics—Riga 2017 |