Category Chemistry/Nanotechnology

They reveal the origin of wine, the age of bones and fossils, and they serve as diagnostic tools in medicine. Isotopes and isotopologues—molecules that differ only in the composition of their isotopes—also play an increasingly important role in astronomy. For example, the ratio of carbon-12 (12C) to carbon-13 (13C) isotopes in the atmosphere of an exoplanet allows scientists to infer the distance at which the exoplanet orbits its central star.

Until now, 12C and 13C bound in carbon monoxide were the only isotopologues that could be measured in the atmosphere of an exoplanet. Now a team of researchers has succeeded in detecting ammonia isotopologues in the atmosphere of a cold brown dwarf.

As the team has just reported in the journal Nature, ammonia could be measured in the f...

MXene and MBene compounds hold promise for new technologies to combat climate change. Some of the thinnest materials known to humankind — MXene and MBene compounds — may provide solutions to scientists in their quest to curb the effects of global warming. These substances are only a few atoms thick, making them two-dimensional. Because of their large surface area, the materials have the potential to absorb CO2 molecules from the atmosphere, which could help reduce the harmful effects of climate change by safely sequestering carbon dioxide, according to a review study.

Some of the thinnest materials known to humankind may provide solutions to scientists in their quest to curb the effects of global warming.

Known as MXene and MBene compounds, these substances are only a few atoms ...

In research that could jumpstart interest into an enigmatic class of materials known as quasicrystals, MIT scientists and colleagues have discovered a relatively simple, flexible way to create new atomically thin versions that can be tuned for important phenomena. In work reported in Nature they describe doing just that to make the materials exhibit superconductivity and more.

The research introduces a new platform for not only learning more about quasicrystals, but also exploring exotic phenomena that can be hard to study but could lead to important applications and new physics...

UC Riverside chemical engineers have designed a fuel that ignites only with the application of electric current. Since it doesn’t react to flames and cannot start accidental fires during storage or transport, it is a “safe” liquid fuel.

“The fuel we’re normally using is not very safe. It evaporates and could ignite, and it’s difficult to stop that,” said Yujie Wang, UCR chemical engineering doctoral student and co-author of a new paper about the fuel. “It is much easier to control the flammability of our fuel and stop it from burning when we remove voltage.”

The Journal of the American Chemical Society paper describes how the team created the fuel, and additional technical details are also included i...