在乙醇浸泡的聚胺上激光制造湿度传感器,用于完全无接触的呼吸系统监测
Rui Chen1,2, Sirui Liu1, Chen Zhang1
1Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361102, China.
ACS applied materials & interfaces
|August 14, 2024
概括
研究人员开发了一种简单的方法,用于制造高灵敏度的湿度传感器,使用在乙醇浸泡的聚胺薄膜上激光诱导的石墨烯. 这些传感器使得有效的,完全无接触的远程呼吸监测.
科学领域:
- 材料科学 材料科学 材料科学
- 传感器技术 传感器技术
- 生物医学工程 生物医学工程
背景情况:
- 用于呼吸监测的可穿戴设备带来了舒适性和感染风险.
- 为敏感的湿度传感器开发简单的制造方法对于无接触式监测至关重要.
研究的目的:
- 为高度敏感的湿度传感器引入一种简单的制造方法.
- 为了实现完全无接触的呼吸监测,提高性能.
主要方法:
- 在以乙醇浸泡的聚胺 (PI) 薄膜上使用激光诱导的石墨烯 (LIG) 作为湿度传感器电极.
- 使用浸泡在乙醇中的PI作为离子导电传感材料.
- 在经过处理和未经处理的PI薄膜上制造LIG湿度传感器以进行比较.
主要成果:
- 浸泡在乙醇PI上的LIG传感器显示出优异的线性 (R2 = 0.9936),降低了歇斯底里 (ΔH = 5.1% RH) 和增加了灵敏度 (0.65%/RH).
- 开发的传感器成功检测到30厘米的呼吸,超过未经处理的PI上的传感器.
- 这些传感器的阵列进一步提高了呼吸监测的检测距离和灵敏度.
结论:
- 拟议的LIG湿度传感器制造方法简单,并产生高度敏感的设备.
- 这些传感器为医疗和体育应用中完全无接触的呼吸监测提供了有希望的解决方案.
- 这项技术使得在运动期间能够有效地在床上监测和持续跟踪呼吸速率.
相关概念视频
01:21Gas Chromatography: Types of Detectors-I
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
01:19Gas Chromatography: Types of Detectors-II
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
01:17Microbial Biosensors
Microbial biosensors are analytical devices that utilize living microbes to detect specific substances through measurable signals. These devices consist of two main components: biosensing organisms and signal-transducing elements. Biosensing organisms, such as Escherichia coli or Saccharomyces cerevisiae, are typically housed in multiwell plates connected to transducers, enabling rapid, real-time detection of target analytes.Signal Generation MechanismWhen a target analyte—such as...