"A UCLA-developed thermal transistor uses an electric field to control heat flow, as shown in this illustration." Uhhh, that doesn't look like an illustration

"A UCLA-developed thermal transistor uses an electric field to control heat flow, as shown in this illustration." Uhhh, that doesn't look like an illustration to me? It looks like AI-generated nonsense that has little to do with anything. The actual paper (linked in another comment here) does have some real illustrations.