Scientists discover two species of few-electron bubbles in
superfluid helium

In a new study, scientists at the Indian Institute of
Science (IISc) have experimentally shown the existence of two
species of few electron bubbles (FEBs) in superfluid helium for the
first time. These FEBs can serve as a useful model to study how the
energy states of electrons and interactions between them in a
material influence its properties.