Chinese researchers have designed a type of wireless olfactory interface for virtual reality applications, according to a recently published research article in the journal Nature Communications.
The soft and miniature fragrance interface can make users smell different fragrances, such as rosemary, mojito, pancakes and durian (a type of fruit).
Previously, human-computer interface systems that simulate sight, sound and touch in virtual reality were developed, while those with olfactory feedback did not exist.
Researchers from Beihang University and the City University of Hong Kong optimized material selection, design and power management, according to the article. Odor generators have shown outstanding performance in various aspects, including response speed, odor concentration control, long-term continuous operation, high mechanical or electrical stability, and low energy consumption.
There are two choices for the fragrance interface. One is equipped with a millimeter-scale scent generator that attaches directly to the skin under the nose and has two scent options, while the other is a soft mask that produces nine different scents.
The researchers demonstrated its adaptability to 30 different scents including pineapple, ginger, green tea, caramel and candy.
Soft scent interfaces are considered to have great potential in practical applications such as entertainment, education, and human-machine interfaces.
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