Optics Department, University of Granada, 18071 Granada, Spain.
Indra Systems S.A., 28108 Madrid, Spain.
Sensors (Basel). 2022 Apr 26;22(9):3299. doi: 10.3390/s22093299.
Carbon monoxide (CO) is a highly toxic gas, which can cause death if it is inhaled in small quantities for a long time or in large quantities for a short time. Since this gas can be lethal, it is essential to detect it from minute to large concentrations. Our study consists of the design of a superficial plasmonic resonance (SPR) CO sensor of tiny dimensions which is capable of giving an immediate response at different concentrations. It is designed to work at different heights above sea level since the refractive index of this gas depends on a mixture with air and the air pressure. Due to its low weight and tiny dimensions, it is ideal for space travel or on airplanes. The results show a high resolution and sensitivity (~10 RIU of resolution and a sensitivity of 13.51-81.26 RIU).
一氧化碳（CO）是一种剧毒气体，如果长时间吸入少量或短时间内吸入大量，都会导致死亡。由于这种气体是致命的，因此从微量到大量浓度都必须对其进行检测。我们的研究包括设计一种微小尺寸的表面等离子体共振（SPR）CO 传感器，它能够在不同浓度下立即做出响应。它的设计可以在不同的海拔高度工作，因为这种气体的折射率取决于与空气的混合物和气压。由于其重量轻、尺寸小，因此非常适合太空旅行或飞机使用。结果表明，该传感器具有高分辨率和灵敏度（~10 RIU 的分辨率和 13.51-81.26 RIU 的灵敏度）。
