用于呼吸周期监测和非接触式传感应用的超快速湿度传感器

IF 27.4 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Suman Mandal, Harold Mazo Mantilla, Kalaivanan Loganathan, Hendrik Faber, Abhinav Sharma, Murali Gedda, Emre Yengel, Dipak Kumar Goswami, Martin Heeney, Thomas D. Anthopoulos
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引用次数: 0

摘要

随着人机界面硬件的进步,需要更好的传感器来检测来自不同刺激的信号。在众多技术中,湿度传感器对于环境监测、食品生产、农业和医疗保健等不同领域的应用至关重要。目前的湿度传感器依赖于吸收水分的材料,这可能需要一些时间来与周围环境平衡,从而减慢了它们的时间响应并限制了它们的应用。在这里,通过将纳米间隙电极(NGE)结构与鸡蛋蛋白作为吸湿成分结合起来,解决了这一挑战。该传感器提供廉价的制造,高响应,超快的响应,以及在10-70% RH的相对湿度范围内对湿度的选择性。具体而言,基于鸡蛋蛋白的传感器对相关干扰物质的响应可以忽略不计,对水湿度的响应保持特异性,室温响应率为1.15 × 104。NGE结构的极间距(约20nm)极短,可以实现快速的时间响应,上升/下降时间分别为10/28 ms,使该设备成为迄今为止基于生物材料报道的最快的湿度传感器。通过利用这些功能,非接触式湿度传感和实时呼吸周期监测适用于诊断慢性疾病,如睡眠呼吸暂停,哮喘和肺部疾病。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Ultra-Fast Moisture Sensor for Respiratory Cycle Monitoring and Non-Contact Sensing Applications

Ultra-Fast Moisture Sensor for Respiratory Cycle Monitoring and Non-Contact Sensing Applications

Ultra-Fast Moisture Sensor for Respiratory Cycle Monitoring and Non-Contact Sensing Applications

As human-machine interface hardware advances, better sensors are required to detect signals from different stimuli. Among numerous technologies, humidity sensors are critical for applications across different sectors, including environmental monitoring, food production, agriculture, and healthcare. Current humidity sensors rely on materials that absorb moisture, which can take some time to equilibrate with the surrounding environment, thus slowing their temporal response and limiting their applications. Here, this challenge is tackled by combining a nanogap electrode (NGE) architecture with chicked egg-derived albumen as the moisture-absorbing component. The sensors offer inexpensive manufacturing, high responsivity, ultra-fast response, and selectivity to humidity within a relative humidity range of 10–70% RH. Specifically, the egg albumen-based sensor showed negligible response to relevant interfering species and remained specific to water moisture with a room-temperature responsivity of 1.15 × 104. The nm-short interelectrode distance (circa 20 nm) of the NGE architecture enables fast temporal response, with rise/fall times of 10/28 ms, respectively, making the devices the fastest humidity sensors reported to date based on a biomaterial. By leveraging these features, non-contact moisture sensing and real-time respiratory cycle monitoring suitable for diagnosing chronic diseases such as sleep apnea, asthma, and pulmonary disease are demonstrated.

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来源期刊
Advanced Materials
Advanced Materials 工程技术-材料科学:综合
CiteScore
43.00
自引率
4.10%
发文量
2182
审稿时长
2 months
期刊介绍: Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.
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