Synthesis and characterization of metal-doped humidity sensors based on hematite for environmental monitoring applications
| dc.contributor.author | Afify, Ahmed S. | |
| dc.date.accessioned | 2018-01-24T10:57:00Z | |
| dc.date.available | 2018-01-24T10:57:00Z | |
| dc.date.issued | 2016-03-23 | |
| dc.description.abstract | Humidity sensors have several applications in both industrial processing and environmental control. Pure and doped hematite have proved to exhibit a remarkable humidity sensing properties. The aim of this investigation is to study the effect of doping of some metal ions (Li+, Mg+2, Ba+2, Sr+2, and Na+) onto the crystalline hematite and to determine their sensitivity towards relative humidity (RH). The obtained crystalline samples were characterized by particle size distribution, X-Ray Diffraction (XRD) combined with Field Emission Scanning Electron Microscopy (FESEM). Sensors were screen printed onto an α- alumina substrates with platinum electrode followed by Screen printing of doped α-Fe2O3 powders and a binder for the appropriate rheological properties to the paste. After deposition samples were dried in air at room temperature prior to be heat treated at 800°C for 1h. Humidity sensors were tested in a laboratory apparatus made of a thermostated chamber, operated at 25°C, in which relative humidity (RH) could be varied between 0 and 96%. The doped sodium metal ions (Na+) hematite sample showed a significant response towards relative humidity at room temperature. | en_US |
| dc.identifier.uri | https://hdl.handle.net/20.500.11888/13024 | |
| dc.language.iso | en | en_US |
| dc.title | Synthesis and characterization of metal-doped humidity sensors based on hematite for environmental monitoring applications | en_US |
| dc.type | Article | en_US |
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