The authors demonstrate that it is possible to transform a supercooled liquid metal at room temperature
into a variety of shapes in solids by combined liquid metal deformation and induced crystallization
from the supercooling state. The authors discover that both reversible deformation and irreversible
deformation can be achieved simultaneously for supercooled liquid gallium in alkaline or acid
electrolytes by using electrodes that are non-wetted or wetted with liquid gallium, respectively. Our
findings on the simultaneous deformation and solidification offer a novel approach to controlled
patterning and solidification of supercooled liquid gallium at room temperature.