Popigai is one of the largest and most well-preserved impact craters on Earth. About 36 million years ago, an asteroid slammed into northern Siberia and created one of the largest craters on Earth. Streaking in at an estimated speed of 20 kilometers (12 miles) per second, the asteroid made an impact that […]

Imperfections such as the inclusions (dark flecks) in this diamond reveal that tectonic slabs can carry water deep into Earth’s mantle. EVAN SMITH/© 2021 GIA Earthquakes shouldn’t occur more than 300 kilometers below Earth’s surface, according to most geophysical models. Yet they commonly do—a phenomenon that has mystified seismologists for […]

Electron beamlets as observed on YAG screens at varying distances from a cathode source. Credit: Argonne National Laboratory Beam-driven wakefield acceleration approaches are promising candidates for future large-scale machines, including X-ray free electron lasers and linear colliders, as they have the potential to improve efficiency and reduce operation cost. One […]

A photoconductive switch made from a synthetic, chemical vapor deposition diamond under test. Credit: LLNL When it comes to the semiconductor industry, silicon has reigned as king in the electronics field, but it is coming to the end of its physical limits. To more effectively power the electrical grid, locomotives, […]

The fluid inclusions inside the olivine contain nanodiamonds, apart from serpentine, magnetite, metallic silicon, and pure methane. Credit: University of Barcelona Natural diamonds can form through low pressure and temperature geological processes on Earth, as stated in an article published in the journal Geochemical Perspectives Letters. The now found mechanism, far […]

Diamond could conduct electricity like metals when it is deformed to strains at the nanoscale, according to predictions from a study by an international team of scientists led by Nanyang Technological University, Singapore (NTU Singapore) and the Massachusetts Institute of Technology (MIT), USA. Using computer simulations, the team, which also […]

Researchers have discovered a way to transform the electronic properties of nanoscale needles of diamond. Credit: MIT News Normally an insulator, diamond becomes a metallic conductor when subjected to large strain in a new theoretical model. Long known as the hardest of all natural materials, diamonds are also exceptional thermal […]

Diamonds from Kankan, Guinea, analyzed in this study The imperfections inside the diamond are small inclusions of a mineral called ferropericlase, which is from the lower mantle. Credit: Anetta Banas Uncovering New Understanding of Earth’s Carbon Cycle University of Alberta PhD student authors paper shedding new light on Earth’s deepest […]

Artist’s impression of the collision of two protoplanets. Credit: NASA/SOFIA/Lynette Cook International research team solves theory of how diamonds formed inside protoplanets. Geoscientists from Goethe University have found the largest extraterrestrial diamonds ever discovered – a few tenths of a millimeter in size nevertheless – inside meteorites. Together with an […]