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A Visual Indication of Environmental Humidity Using a Colour Changing Hologram Recorded in a Self-developing Photopolymer
Naydenova, Izabela; Jallapuram, Raghavendra; Toal, Vincent; Martin, Suzanne
A reflection hologram for visual indication of environmental humidity has been studied. The hologram is recorded in a self-developing photopolymer and changes colour when exposed to a change in humidity and is fully reversible. The range of colour change, reversibility and the response time of the hologram have been studied in a controlled humidity environment. Fully reversible holograms with response times from few seconds to tens of minutes have been designed. Extremely sensitive bright visual humidity indicators, capable of dramatic colour change within a few seconds of breathing on them are demonstrated.
Keyword(s): photopolymers; holographic sensors; humidity sensors; acrylamide based photopolymers; holography; reflection holograms; Optics; Physical Sciences and Mathematics; Physics
Publication Date:
Type: Journal article
Peer-Reviewed: Unknown
Contributor(s): Enterprise Ireland Technology Commercialisation Fund.
Institution: Dublin Institute of Technology
Citation(s): Articles
Publisher(s): Dublin Institute of Technology
File Format(s): application/pdf
First Indexed: 2010-03-16 05:38:54 Last Updated: 2017-12-14 07:11:16