Search results for x-ray

Analytical Chemistry 2 hours ago

Chemical rope trick at molecular level: Mechanism research helps when 'trial and error' fails

In most industrial chemical reactions, catalysts combine with the starting materials and accompany them through intermediate stages to the product. In chemistry, this pathway is known as the reaction mechanism, and it is ...

Astronomy 19 hours ago

NASA's Chandra releases timelapse movies of Crab Nebula and Cassiopeia A

New movies of two of the most famous objects in the sky—the Crab Nebula and Cassiopeia A—are being released from NASA's Chandra X-ray Observatory. Each includes X-ray data collected by Chandra over about two decades. ...

Astronomy Apr 24, 2024

International team detects eruption of mega-magnetic star in nearby galaxy

While ESA's satellite INTEGRAL was observing the sky, it spotted a burst of gamma-rays—high-energy photons—coming from the nearby galaxy M82. Only a few hours later, ESA's XMM-Newton X-ray space telescope searched for ...

Analytical Chemistry Apr 24, 2024

Scientists develop novel liquid metal alloy system to synthesize diamond under moderate conditions

Did you know that 99% of synthetic diamonds are currently produced using high-pressure and high-temperature (HPHT) methods? A prevailing paradigm is that diamonds can only be grown using liquid metal catalysts in the "gigapascal ...

General Physics Apr 24, 2024

Scientists at the MAJORANA Collaboration look for rule-violating electrons

In a new study published inNature Physics, scientists at the MAJORANA Collaboration have tested the stringency of charge conservation and Pauli's exclusion principles using underground detectors. Alessio Porcelli has published ...

Analytical Chemistry Apr 23, 2024

Synthesizing highly efficient carbohelicenes for circularly polarized luminescence emitters

Helicenes are organic molecules that gained widespread popularity due to their unique helical π-conjugated molecular structure, where the benzene rings are ortho-fused, resulting in excellent chiroptical properties such ...

Plants & Animals Apr 23, 2024

Advances in understanding the evolution of stomach loss in agastric fishes

Living beings can evolve to lose biological structures due to potential survival benefits from such losses. For example, certain groups of ray-finned fishes show such regressive evolution—medakas, minnows, puffera, and ...

Paleontology & Fossils Apr 23, 2024

Fossil frogs share their skincare secrets: Analysis of 45-million-year-old soft tissues

Paleontologists at University College Cork (UCC), Ireland, have solved a hundred-year-old mystery of how some fossil frogs preserve their fleshy parts—it's all down to their skin.

Condensed Matter Apr 23, 2024

Study shines light on properties and promise of hexagonal boron nitride, used in electronic and photonics technologies

Single-photon emitters (SPEs) are akin to microscopic lightbulbs that emit only one photon (a quantum of light) at a time. These tiny structures hold immense importance for the development of quantum technology, particularly ...

Analytical Chemistry Apr 22, 2024

Exploring the potential of single-atom catalysts

There is a high level of interest, even excitement, among chemists and materials scientists about the potential of single-atom catalysts (SACs), but their development relies on very specialized tools available only at synchrotrons ...

page 1 from 40