This innovative fan-on-a-chip could make active cooling a reality on phones

xMEMS just introduced the XMC-2400, an active cooling solution based on an all-silicon design that's aimed at phones. Basically, it's a fan that can be used inside a phone to manage thermals.

source https://www.androidcentral.com/phones/this-innovative-fan-on-a-chip-could-make-active-cooling-a-reality-on-phones