Scientists Forge Harder Diamond From Graphite

New Material Could Revolutionize Electronics

Chinese researchers have achieved a significant breakthrough by successfully synthesizing a hexagonal diamond, a rare and exceptionally hard material previously found primarily in meteorites.

Unlocking Superhard Potential

This novel achievement, detailed in the journal Nature, pushes the boundaries of superhard materials. Unlike conventional Earth diamonds, which possess a tetrahedral lattice structure limiting their ultimate strength, hexagonal diamonds offer superior properties.

Innovative Synthesis Method

The research team developed an innovative process to convert graphite into hexagonal diamond. By applying precise high-temperature, high-pressure, and quasi-hydrostatic conditions, they compressed and heated graphite single crystals, yielding a high-purity hexagonal diamond.

Previous attempts faced considerable challenges due to the extreme conditions required for formation. Under typical high-pressure and high-temperature environments, cubic diamonds—not the desired hexagonal form—were usually produced.

The success is attributed to the use of high-purity natural graphite single crystals and advanced in-situ X-ray observation techniques. This allowed for real-time monitoring of sample transformations, according to **Yang Liuxiang**, a study co-author and researcher at the Center for High-Pressure Science & Technology Advanced Research in Beijing.

Future Applications on the Horizon

The creation of this robust hexagonal diamond is expected to open new avenues for developing advanced superhard materials and high-end electronic devices. It lays a crucial methodological groundwork for future investigations into diamond-like materials.

The development of such advanced materials is critical. For instance, synthetic diamond is already making inroads in quantum computing, with researchers at QuTech in the Netherlands achieving long-distance entanglement using diamond defects (Nature, 2021).

This scientific advancement promises to redefine the limits of material science, potentially impacting industries ranging from cutting tools to advanced computing.