Quick and Sensitive Detection of Water Using Galvanic-Coupled Arrays with a Submicron Gap for the Advanced Prediction of Dew Condensation

We have demonstrated a highly sensitive moisture sensor that can detect water molecules, in addition to water droplets, and therefore, can predict dew condensation with high accuracy and high speed before the formation of water droplets, showing a better performance than a commercial hygrometer. Add...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2020-06, Vol.20 (11), p.3314
Main Authors: Shrestha, Rekha Goswami, Kubota, Yusuke, Sakamoto, Yukihiro, Kawakita, Jin
Format: Article
Language:English
Subjects:
Accuracy
Condensation
Cooling
Cooling rate
Dependence
Dew
Droplets
Electrodes
galvanic current
Humidity
Medical equipment
Metals
Moisture
Parameter sensitivity
Physical properties
Process controls
Semiconductors
sensitivity and accuracy
Sensors
thin film of water molecules
Vapor pressure
Water chemistry
Water drops
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Summary:We have demonstrated a highly sensitive moisture sensor that can detect water molecules, in addition to water droplets, and therefore, can predict dew condensation with high accuracy and high speed before the formation of water droplets, showing a better performance than a commercial hygrometer. Additionally, the dependence of the output response from the sensor on factors, such as the cooling rate of the sensor's surface and the vapor pressure in the chamber, that affect the performance of the moisture sensor has been clarified. The output response showed a clear dependence on the variation in cooling rate, as well as the vapor pressure. The higher the cooling rate and vapor pressure, the higher the output response. The output response showed a linear response to the change in the above-mentioned parameters. The higher sensitivity and accuracy of the moisture sensor, as a function of the physical parameters, such as cooling rates, vapor pressure, enables the sensor to perform in advanced detection applications. The sensor can be modified to the actual target regarding the surface nature and the heat capacity of the target object, making it more suitable for wide applications.
ISSN:1424-8220
1424-8220
DOI:10.3390/s20113314