Holographic Sensor Based on Bayfol HX200 Commercial Photopolymer for Ethanol and Acetic Acid Detection

This paper presents a holographic sensor based on reflection holograms recorded in the commercial photopolymer Bayfol® HX 200. The recording geometry and index modulation of the hologram were optimised to improve accuracy for this specific application. The sensor was subjected to tests using various...

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Published inSensors (Basel, Switzerland) Vol. 23; no. 21; p. 8776
Main Authors Potărniche, Ioana-Adriana, Marín-Sáez, Julia, Collados, M. Victoria, Atencia, Jesús
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 27.10.2023
Subjects
Acetaldehyde
Acetic acid
acetic acid sensor
Acids
Alcohol
Alcohol, Denatured
Batch processing
Cocaine
Efficiency
Electric waves
Electromagnetic radiation
Electromagnetic waves
ethanol sensor
Geometry
holographic sensors
Hydrogels
Organic acids
photopolymer
Polymers
reflection holograms
Sensors
Simulation
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Summary:This paper presents a holographic sensor based on reflection holograms recorded in the commercial photopolymer Bayfol® HX 200. The recording geometry and index modulation of the hologram were optimised to improve accuracy for this specific application. The sensor was subjected to tests using various analytes, and it exhibited sensitivity to acetic acid and ethanol. The measurements revealed a correlation between the concentration of the analyte in contact with the sensor’s surface and the resulting wavelength shift of the diffracted light. The minimum detectable concentrations were determined to be above 0.09 mol/dm3 for acetic acid and 5% (v/v) for ethanol. Notably, the sensors demonstrated a rapid response time. Given that ethanol serves as a base for alcoholic beverages, and acetic acid is commonly found in commercial vinegar, these sensors hold promise for applications in food quality control.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s23218776