Design of an Optical Thermal Sensor Based on Polydimethylsiloxane Polymers

The study employed polydimethylsiloxane polymers with the purpose of developing an optical temperature sensor. It will have practical uses in biosensing and temperature-sensing. The PDMS polymer will be applied onto the photonic crystal hole and subsequently filled with it. When the voids in the polymer are filled, a functional layer will form on the surface of the photonic crystal, despite the polymer's inherent liquid state and flexibility. In order to test bio-sensing capabilities, we subjected polymers to a controlled temperature variation environment, which resulted in a change in the reflective index as a result of temperature. Low temperatures result in a high reflecting index, whereas high temperatures lead to a low reflective index, causing transparency owing to light. The unit cell design will be subjected to experimental modifications to enhance the accuracy of the results, utilizing Meep Python, a simulation program