Materials2026-04-011 minarXiv:2604.00483expressSeeing the Unseen: Electric Patterns Inside a CrystalOn the surface of a thin film of bismuth iron oxide, you can see neat stripes, like furrows in a plowed field. What lies beneath them has remained a mystery until now.Ting-Ran Liu·Koushik Jagadish·Xiangwei Guo·Maya Ramesh·Peter Meisenheimer·Harish Kumarasubramanian·Sajid Husain·Ann V. Ngo·Amir Avishai·Jayakanth Ravichandran·Darrell G. Schlom·Ramamoorthy Ramesh·Yu-Tsun ShaoAlbert EinsteinRainer WeissJames Clerk MaxwellConvolutional Neural Networksoptical microscopy👍👎☆SimplePopularAdvanced