Controlling heat flow in a solid by switching crystal structure dimensionality

In their study, the researchers were able to obtain different κ values in a Se alloy by changing the crystal structure dimensionality owing to the different arrangements of atoms and band gaps in each crystal structure relative to the other."The material we chose for our study is bulk polycrystals of Se, which shows a direct phase boundary between the 3D and 2D crystal structures.

This new approach to altering κ could pave the way for the design of more such materials with potential applications in thermal management.

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