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Understanding how materials can convert heat into electricity benefits from a view of those materials at the atomic scale. New research examined how the vibrational modes called phonons work in nanostructures and the interfaces between materials to more fully understand how heat transfers in those materials.
Chirality is the breaking of reflection and inversion symmetries.
To better understand how thermoelectric devices convert thermal energy into electricity at the atomic scale, researchers used neutrons to study single crystals of tin sulfide and tin selenide. The results revealed a strong correlation between changes in the structure at certain temperatures and the frequency of atomic vibrations (phonons). This allowed the researchers to identify temperatures ideal for energy conversion and provided basic scientific knowledge for designing new thermoelectric materials.
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