0000000000480042

AUTHOR

Sergio Calixto

showing 2 related works from this author

Water Vapor Sensors Based on the Swelling of Relief Gelatin Gratings: Recent Advances and Development

2021

We report on a novel device to measure relative humidity. Materials used in the measurement of relative humidity are of different kinds. The sensor is based on surface diffraction gratings made of gelatin. This material swells and shrinks according to the content of water vapor in air. By sending a light beam to the grating, diffracted orders appear. Due to the gelatin swelling or shrinking, first order intensity changes according to the relative humidity. Calibration curves relating intensity versus relative humidity have been found. The fabrication process of diffraction gratings and the testing of the prototype sensing devices are described.

DiffractionMaterials sciencefood.ingredientfoodLight beamRelative humidityGratingComposite materialDiffraction gratingGelatinIntensity (heat transfer)Water vapor
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Water vapor sensors based on the swelling of relief gelatin gratings

2015

We report on a novel device to measure relative humidity. The sensor is based on surface diffraction gratings made of gelatin. This material swells and shrinks according to the content of water vapor in air. By sending a light beam to the grating, diffracted orders appear. Due to the gelatin swelling or shrinking, first order intensity changes according to the relative humidity. Calibration curves relating intensity versus relative humidity have been found. The fabrication process of diffraction gratings and the testing of the prototype sensing devices are described.

DiffractionMaterials sciencefood.ingredientArticle SubjectGeneral EngineeringGratingÒpticaGelatinfoodlcsh:TA401-492Light beamGeneral Materials ScienceRelative humiditylcsh:Materials of engineering and construction. Mechanics of materialsComposite materialDiffraction gratingMaterialsWater vaporIntensity (heat transfer)
researchProduct