Scientists
have developed micro-scale, liquid-metal particles that can be used for
heat-free soldering and fabricating, repairing and processing of metals – all at
room temperature. The project started as a search for a way to stop liquid
metal from returning to a solid. This is called ‘undercooling’ and it has been
widely studied for insights into metal structure and metal processing. Researchers
from Iowa State University in the US thought if tiny droplets of liquid metal
could be covered with a thin, uniform coating, they could form stable particles
of undercooled liquid metal.
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