In recent years the consumer market for candles has grown dramatically, as candles of all shapes, sizes, colours and fragrances have been used increasingly in homes and restaurants to create atmosphere and enhance mood.
Now two researchers at the University of Southampton have taken the potential uses of fragranced candles one step further, by demonstrating that they can also have valuable and effective bactericidal properties.
The researchers, Dr Lindsey Gaunt and Sabrina Higgins, have discovered that adding essential oils to the candle can destroy bacteria such as Escherichia Coli and Staphylococcus aureus on surfaces. Working with Professor John Hughes in the Bioelectrostatics Research Centre, Lindsey and Sabrina have been testing different essential oils, such as orange, thyme, and eucalyptus, which when dispersed into the air and combined with the ions produced in the candle flame, all have a powerful bactericidal effect.
Joyce Lewis | alfa
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Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
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