Numerical Optimization of Metamaterial-Enhanced Infrared Emitters for Ultra-Low Power Consumption

作者：Bui Xuan Khuyen, Pham Duy Tan, Bui Son Tung, Nguyen Phon Hai, Pham Dinh Tuan, Do Xuan Phong, Do Khanh Tung, Hai Anh Nguyen, Ho Truong Giang, Nguyen Phuc Vinh, Nguyễn Thanh Tùng, Vũ Đình Lãm, Liang‐Yao Chen, YoungPak Lee · 发表于：Photonics · 年份：2025 · DOI：10.3390/photonics12060583 · 被引用次数：3 · 研究领域：GaN-based semiconductor devices and materials、Gas Sensing Nanomaterials and Sensors、Thermal Radiation and Cooling Technologies

This study addresses the challenges of high-power consumption and complexity in conventional infrared (IR) gas sensors by integrating metamaterials and gold coatings into IR radiation sources to reduce radiation loss. In addition, emitter design optimization and material selection were employed to minimize conduction loss. Our metasurface exhibited superior performance, achieving a narrower full width at half maximum at 4197 and 3950 nm, resulting in more confined emission spectral ranges. This focused emission reduced energy waste at unnecessary wavelengths, improving efficiency compared to traditional blackbody emitters. At 300 °C, the device consumed only 6.8 mW, while maintaining temperature uniformity and a fast response time. This enhancement is promising for the operation of such sensors in IoT networks with ultra-low power consumption and at suitably low costs for widespread demands in high-technology farming.