Piezoelectric effect in liquids observed for the first time

https://phys.org/news/2023-03-piezoelectric-effect-liquids.html

"applied pressure with piston to ionic liquid... release electricity proportional to pressure applied... optical properties of ionic liquids changed when released electricity... sometimes changing how liquid bent light... more environmentally friendly than solid materials. They also note that liquid piezoelectric materials could allow more variety in device shape, opening up wider design opportunities"

Related: Alternative to non-renewable power sources discovered in terms of energy generating materials

https://theprint.in/science/alternative-to-non-renewable-power-sources-discovered-in-terms-of-energy-generating-materials/1560463/