研究目的
To propose a ternary photonic crystal as a temperature sensor and study its transmission spectra for different temperatures.
研究成果
The temperature-sensitive transmission peak shift is considerably enhanced due to the insertion of the polymer layer between Si and SiO2 to constitute a ternary photonic crystal. A transmission peak shift of 0.368 nm per degree rise in temperature was obtained with polycarbonate, and 0.380 nm with polystyrene, indicating a higher sensitivity compared to previous studies using different materials.
研究不足
The proposed sensor cannot be used for temperatures higher than 100°C, especially for the structure consisting of Si/polystyrene/SiO2, due to the glass transition and melting points of the polymers.
1：Experimental Design and Method Selection:
The study uses a ternary photonic crystal structure (Si/polymer/SiO2) and investigates its transmission spectra at different temperatures. The transfer matrix method is employed to calculate the transmission coefficient.
2：Sample Selection and Data Sources:
The samples are theoretical models of ternary photonic crystals with specific materials (Si, polymer, SiO2) and thicknesses.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned in the paper.
4：Experimental Procedures and Operational Workflow:
The transmission profile is investigated at different temperatures, considering the thermo-optic and thermal expansion effects on the refractive indices and thicknesses of the layers.
5：Data Analysis Methods:
The transmission coefficient is deduced using the transfer matrix method, and the transmission profile is analyzed for shifts in wavelength with temperature changes.
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