超硬材料重大突破 我国科学家成功合成百微米级六方金刚石

Core Viewpoint - The research team successfully converted high-quality graphite single crystal precursors into hexagonal diamond, demonstrating comparable mechanical properties to cubic diamond, which opens new avenues for high-performance functional materials development [1] Group 1: Research Achievements - The study published in the journal "Nature" confirms the existence of hexagonal diamond, resolving a 60-year debate regarding its macroscopic existence [1] - Hexagonal diamond exhibits two different bond length distributions, unlike cubic diamond which has a single carbon-carbon bond length, and shows significantly reduced interlayer spacing [1] Group 2: Implications for Material Science - The unique stacking arrangement of carbon atoms in hexagonal diamond effectively overcomes the weakness of cubic diamond's close-packed planes, which are prone to slip [1] - This systematic research lays a solid foundation for the future development of hexagonal diamond as a new generation of high-performance functional materials [1]