The photonic biochip, which is based on TripleX waveguide technology developed by our partner Lionix, International consists of silicon nitride and silicon oxide as waveguide and cladding materials, respectively. Binding of analyte molecules to the waveguide causes a change in the light output of the sensor. The cladding, on the other hand, does not contribute to the sensor signal. Read more about the structure of our photonic biochip.
As the waveguide makes up less than 1% of the sensor surface, using a uniform nanocoating for biofunctionalization (left image) results in the bioreceptor being immobilized on the whole sensor surface. That means 99% of the bound analyte remains undetected.