Researchers at Oak Ridge National Laboratory (ORNL) found a simpler way to measure adhesion between graphene sheets, compared to a sophisticated method used in a 2015 study: They measured how much graphene deflects when neon atoms poke it from below to create “bubbles.”   Each bubble’s curvature encodes properties such as sheet flexibility and adhesion. Stacking atomically thin materials opens a pathway toward new energy and electronic applications.   “We discovered a new method to measure a...