Glycine needle crystals grown on a polymer coating. Glycine is the smallest building block of all biological materials, and can be crystallised in many shapes. Bending these needles generates electricity. Researchers at the University of Limerick study a variety of organic materials that generate electricity when a force is applied to them.
Image: Sarah Guerin, Postgraduate Researcher, The Bernal Institute, UL
You can read more about the Bernal Institute on their website bernalinstitute.com