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Compact plasmonic fiber tip for sensitive and fast humidity and human breath monitoring

机译:紧凑型等离子体纤维尖端,用于敏感和快速湿度和人类呼吸监测

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We demonstrate a plasmonic fiber tip for relative humidity (RH) detection by integrating a gold nanomembrane onto the end-face of a multimode optical fiber via a flexible and high-efficiency transfer method. Fast water condensation/evaporation is responsible for the high performance of the fiber tip in response to RH. A high sensitivity of 279 pm/%RH is obtained in the range of 11% similar to 92%RH. Taking advantage of the fast dynamics (response and recovery times of 156 ms and 277 ms), the plasmonic fiber tip offers an excellent detection capability to human breaths at varied frequencies and depths. The compact, easy-fabrication, and fast-dynamics plasmonic platform has versatile potential for practical applications, including environmental and healthcare monitoring, as well as biochemical sensing. (C) 2020 Optical Society of America
机译:我们通过柔性和高效转移方法将金纳米膜与多模光纤的端面集成到多模光纤的端面上,证明了具有相对湿度(RH)检测的等离子体纤维尖端。 快水冷凝/蒸发负责响应RH的纤维尖端的高性能。 高灵敏度为279μm/%RH的11%与92%RH相似。 利用快速动态(响应和156ms和277毫秒的恢复时间),等离子体纤维尖端为人类呼吸和深度提供了出色的检测能力。 紧凑,易于制造,快速动态的等离子体平台具有多功能的实际应用,包括环境和医疗保健监测,以及生物化学传感。 (c)2020美国光学学会

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