What role do gold and aluminium play in the artificial tongue?

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Gold and Aluminium Serve as "Tastebuds" in the Artificial Tongue

In the developed artificial tongue, gold and aluminium play a crucial role as the primary sensory components, functioning akin to "tastebuds." These materials are arranged in a specific pattern, and their interaction with the liquid being tested allows for detailed analysis of subtle differences. The technology leverages the optical properties of these metals to differentiate complex chemical mixtures, demonstrating a high degree of accuracy.
Materials Act as Sensory Receptors

The artificial tongue is constructed with a chequerboard pattern of minute gold and aluminium pieces. These metallic elements are designed to absorb light when submerged in a liquid, such as whisky. By precisely measuring how light is absorbed by these "tastebuds," the system can detect minute variations.
Light Absorption Measures Chemical Differences

When whisky is introduced to the gold and aluminium surfaces, researchers monitor the absorption of light. Even slight alterations in the colour of these metallic pieces are measured. These colour changes are then used to construct a statistical profile for each sample, enabling the differentiation between various types and ages of whisky.
High Accuracy in Distinguishing Complex Mixtures

This method has proven exceptionally accurate, achieving over 99 per cent accuracy in distinguishing between subtle differences, including whiskies of the same brand aged in different barrels. The technology is capable of identifying a wide range of chemicals within complex mixtures, extending its utility beyond whisky tasting to other quality control applications.

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What role do gold and aluminium play in the artificial tongue?

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