Nanodiamonds Created From Graphene Triangles

Researchers have developed a novel single-step process to synthesize nanodiamonds with unprecedented uniformity and crystalline structure, measuring only 3–4 nanometers in size. This breakthrough overcomes previous difficulties in producing such small and consistent nanodiamonds, which are crucial for applications in quantum sensing and imaging due to their ability to host atom-sized light emitters. The new method utilizes planar carbon molecules, specifically graphene triangles with hydrogen atoms at their edges, as precursors.

The process involves treating these nanographene molecules under specific conditions that induce their transformation into nanodiamonds. This approach offers a significant advantage by producing the desired nanodiamonds in a single step, streamlining production and potentially reducing costs. Furthermore, the technique is adaptable, allowing for the generation of fluorescent nanodiamonds, which are particularly valuable for advanced imaging and sensing technologies.

Previous methods for creating nanodiamonds often resulted in larger, less uniform particles or required multiple complex steps. The ability to produce consistently sized, crystalline nanodiamonds at the 3–4 nanometer scale opens up new possibilities for developing highly sensitive quantum sensors and advanced imaging systems. These tiny diamonds can precisely control and emit light at the atomic level, making them ideal for detecting minute changes in magnetic fields or for biological imaging with high resolution.

The research, published online in Nature on July 1, 2026, details the chemical and physical transformations involved in converting the graphene triangles into nanodiamonds. The precise control over the size and crystalline quality achieved through this method is expected to accelerate the development of next-generation quantum technologies. The adaptability of the process to create fluorescent nanodiamonds further broadens its potential impact across scientific and technological fields.