A robot able to 'smell' using a biological sensor

https://techxplore.com/news/2023-01-robot-biological-sensor.html

"sensor sends electrical signals as response to odor, which robot detects and interprets... machine learning to create library of smells... sensitivity 10,000X higher... ... prototype able to characterize 8 odors such as geranium, lemon and marzipan, and then later, to various types of Scotch whiskey.... principle we have demonstrated can be used and applied to other senses, such as sight and touch, and eventually identify explosives, drugs, diseases"

Related: Sensing odor molecules on a graphene surface layered with self-assembled peptides

https://phys.org/news/2023-01-odor-molecules-graphene-surface-layered.html