Air conditioner ‘in a patch’ provides portable cooling

Personal cooling could be one step closer to reality, thanks to the advent of a flexible cooling device that can be incorporated into clothing. Thermoelectric systems use semiconductors to pump heat from one side of a device to the other, creating a cool zone and a hot zone. Such systems can provide compact, easily adjustable cooling, but getting them to efficiently dissipate heat has proved challenging.
Read more: https://www.nature.com/articles/d41586-019-01576-x?source=Snapzu