Hijacking edit : The article in this post is trash look at this one : https://spectrum.ieee.org/thermal-transistor

I'm not sure if I understand this very well, and how small these could be built.

But let's look at the computer cpus. It maybe would allow for a better heat management in these chips.

When a cpu is designed, the engineers have no idea where the hot-spot is. After plenty of testing, a general spot for a termal probe would be found. However that spot may not be the real hot spot, due to limitations in the design and other factors, like the uneven dissipation of heat in the chip. So there is a tollererance used to prevent the chip from burning itself.

Maybe these thermal transistors could transfer the heat where it really matters and even out how the head gets out of the cpu, which would possibly enhance that heat management and get better results.

I don't remember exactly where this cpu temperature probe limitation was discussed. It would be in one of these 2 videos from Der8auer :

https://youtu.be/ljZt_TQegHE?si=gMbcvfkznG-scZh0

https://youtu.be/h9TjJviotnI?si=lzt057vUjGb6YIPa