Thermo-optic effect in an integrated hybrid photonic system. The temperature-dependent modification in the optical and dielectric properties of 1 indicates a temperature dependent change in refractive index. To study such changes in refractive index, we integrate 1 with a slot waveguide silicon micro-ring resonator (MRR) to develop the hybrid materials; the details of device fabrication can be found in the supplementary information (Figure ). The silicon slot waveguide has a propagating optical mode as shown in Figure . The optical mode has a large volume that interacts with 1 and responds to changes in the refractive index of 1. The changes in the optical mode are observed as changes in the refractive Index (𝑛 𝑒𝑓𝑓 ). The MRR is used to convert the change in 𝑛 𝑒𝑓𝑓 and 𝑛 𝑔 into an observable quantity. The typical Lorentzian resonance spectrum of the MRR, with a dip in the transmitted power at the resonant wavelength (0), is given by 𝑚 0 = 𝑛 𝑒𝑓𝑓 𝐿