

Scientists at the University of Glasgow have created what they call an artificial tongue that is meant to help cut down on the trade of counterfeit alcohol.
The artificial tongue is specifically designed to taste the subtle differences between types of whiskey.
The design of the device exploits the optical properties of gold and aluminum to test the whiskey.
The artificial tongue uses sub-microscopic slices of aluminum and gold arranged in a checkerboard pattern to act as the tastebuds.
The team poured samples of whiskey over the tastebuds, which are about 500,000 times smaller than human tastebuds, and measured how they absorbed light while submerged in the alcohol.
Statistical analysis of the subtle differences in how the metals in the artificial tongue absorb light, called plasmonic resonance, allows the team to identify different types of whiskey.





