Materials A graphene window on liquids
Abstract
By using graphene membranes as viewing 'windows', researchers have filmed nanocrystals growing in liquids at atomic resolution. Studying structures in liquids at the atomic level is challenging because the imaging technique of choice, transmission electron microscopy, requires that samples be in a vacuum to maximize their interactions with the electron beam. Air-tight capsules can be used to enclose liquids, but are thick and made of materials that interfere with passing electrons,...