Story Brief

This article has been reviewed according to Science X's editorial process and policies . Editors have highlighted the following attributes while ensuring the content's credibility: Add as preferred source Using 3D electron microscopy, researchers have captured direct evidence for a long‑debated electric field at air-water interfaces, opening a path to rationally designed clean‑energy materials. Credit: Qin-Yi Li / Kyushu University Bubbles are round, and we know surface tension does that. But squeeze that gas-liquid boundary into a space only a few tens of nanometers wide—could other forces be at work?

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