【科技日报】突破传统认知 我国科学家发现一维带电畴壁

Core Insights - A groundbreaking discovery by a team from the Chinese Academy of Sciences has redefined traditional understanding of domain walls in ferroelectric materials, observing one-dimensional charged domain walls in fluorite-structured zirconia films and achieving artificial control over them [1][2] Group 1: Research Breakthrough - The research team has demonstrated the existence of one-dimensional charged domain walls, with thickness and width at the atomic level, approximately tens of thousands of times smaller than a human hair [2] - This discovery challenges the conventional view that domain walls are two-dimensional structures, suggesting that they can be reduced to one-dimensional linear structures in specific layered crystal structures [1][2] Group 2: Implications for Technology - The presence of excess oxygen ions or vacancies at the domain wall acts as a "glue" for charge compensation, stabilizing these charged structures [2] - The ability to generate, move, and erase one-dimensional domain walls through artificial control using localized electric fields opens new avenues for designing novel functional structures at the atomic scale, potentially leading to high-density storage and enhanced performance in artificial intelligence devices [2]