Researchers at the University of Tokyo have unveiled a revolutionary method for creating synthetic diamonds, without the intense heat or pressure traditionally needed.
Led by Professor Eiichi Nakamura, the team used electron irradiation on a molecule called adamantane (C₁₀H₁₆) to transform it into nanodiamonds. By carefully exposing adamantane crystals to electron beams inside a transmission electron microscope (TEM), they observed the molecules gradually reorganizing into a three-dimensional diamond lattice.
This is HUGE: scientists have found a way to make diamonds without heat or pressure
Researchers have discovered a method to transform a carbon-based molecule called adamantane (C₁₀H₁₆) into nanodiamonds using only an electron beam at room temperature.
Traditionally,… pic.twitter.com/yEIckn4Wsf
— SciTech Era (@SciTechera) October 31, 2025
This approach not only produced high-quality nanodiamonds, with diameters up to 10 nanometers, but also prevented structural damage to fragile carbon compounds. Previous techniques relying on high pressure or single-electron ionization failed to yield stable solid products.
The finding opens new avenues for materials science, quantum computing, and even explanations for natural diamond formation in meteorites.
According to the researchers, this breakthrough shows that electrons can precisely drive chemical transformations instead of destroying molecular structures, a discovery that could redefine future diamond synthesis and nanotechnology.
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