In this week’s AIP Advances, researchers at the University of Tabriz created organic materials for brain and heart pacemakers, which rely on uninterrupted signal delivery to be effective. Using a plastic base known as polypropylene, the researchers added a specially formulated clay called Montmorillonite and different ratios of graphene, one of the strongest lightweight materials. They created five different materials that could be performance-tested and took detailed measurements of the structure of the composite materials using scanning electron microscopy.