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Published on: April 16, 2017
One-dimensional topological photonic crystal-based thermal sensor
Abstract:
This study presents a thermal sensor based on a one-dimensional topological photonic crystal, utilizing topologically protected edge states for high-precision temperature detection. The sensor integrates temperature-sensitive lead telluride with thermally stable gallium nitride layers, achieving a sensitivity of 1.62 nm/°C due to the thermo-optic effect of lead telluride. Topological resilience ensures stable performance under structural imperfections, with a high-quality factor (∼19899) and signal-to-noise ratio (∼34.5). The compact design supports integration into wearable devices, implantable systems, and chip-scale technologies, making it ideal for biomedical diagnostics, aerospace, and industrial automation.
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