Humidity sensors by exploiting transition metal dichalcogenides have attracted enormous attention in various applications. Here, we demonstrate a high-sensitivity fiber-optic humidity sensor based on microfibers overlaid with niobium disulfide (NbS2). Our experimental results show that this type of humidity sensor has high sensitivity, and good repeatability and reversibility. In the RH range of 72–97%, a sensitivity of up to 1.05 dB/RH% and an excellent linearity correlation of 99.5% were achieved. The transmission spectrum of the humidity sensor indicates that this sensor has a wide wavelength detection range from 1530 to 1565 nm. We applied the sensor to monitor human breath with a fast response. We anticipate that the humidity sensor will be useful for the environmental monitoring, food production, and semiconductor industries.

中文翻译：

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基于二硫化铌超细纤维的高灵敏度光纤湿度传感器

利用过渡金属二硫属化物的湿度传感器在各种应用中引起了极大的关注。在这里，我们展示了一种基于覆盖有二硫化铌 (NbS2) 的微纤维的高灵敏度光纤湿度传感器。我们的实验结果表明，该类型的湿度传感器具有较高的灵敏度、良好的重复性和可逆性。在 72-97% 的 RH 范围内，实现了高达 1.05 dB/RH% 的灵敏度和 99.5% 的出色线性相关性。湿度传感器的透射光谱表明该传感器具有从 1530 到 1565 nm 的宽波长检测范围。我们应用传感器以快速响应监测人体呼吸。我们预计湿度传感器将用于环境监测、食品生产和半导体行业。