Fluorescent lamp tungsten filament thermionic emission gun as a novel humidity optical sensor
| Autor: | Mohammad Mahdi Doroodmand, Leila Sherafat, Hossein Torabi-Monfared, Fazlolah Eshghi |
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| Rok vydání: | 2021 |
| Předmět: |
Diffraction
Detection limit Multidisciplinary Materials science Infrared Science Analytical chemistry Imaging and sensing Thermionic emission Coupling (probability) Article law.invention Optics and photonics law Optical sensors Rise time Medicine Relative humidity Optical techniques Fluorescent lamp |
| Zdroj: | Scientific Reports Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021) |
| ISSN: | 2045-2322 |
| Popis: | Detecting humidity have been remained a continuing concern within some important areas such as structural health, food processing, industrial as well as agricultural products. In this study, a novel humidity optical sensor is introduced based on the thermionic emission of tungsten filament using the fluorescent lamp set-up. Estimated blue compliant using a charged coupling device camera in optical image of the tungsten filament was confirmed as an appropriate detection system for relative humidity (RH) sensing. The fabricated optical sensor has wide linear range (2.0–98% RH), improved detection limit ( 99.0% RH), improved percentage of relative standard deviation (4.18%, n = 2), adequate hysteresis (2O and tungsten filament during formation of W$${\mathrm{O}}_{3}$$ O 3 .x $${\mathrm{H}}_{2}$$ H 2 O (x = 1–2) in terms of some spectroscopic obtained evidences as well as Fourier transform infrared and X-ray diffraction spectrometries. |
| Databáze: | OpenAIRE |
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