The metal catalyzes the breakdown of hydrogen peroxide into oxygen and water, propelling the balls at speeds up to five microns per second, half as fast as similarly sized bacteria move.

• 金属铂会将过氧化氢催化分解为氧和水，进而推动小球前进，速度高达每秒五微米，相当于同体积细菌移动速度的一半。