Physics General News

How equal charges in enzymes control biochemical reactions

 Physics General News
 25 April 2022
It is well known in physics and chemistry that equal charges repel each other, while opposite charges attract. It was long assumed that this principle also applies when enzymes -- the biological catalysts in all living organisms -- form or break chemical bonds. ...

Scientists turn a hydrogen molecule into a quantum sensor

 Physics General News
 22 April 2022
Using a scanning tunneling microscope equipped with a femtosecond terahertz laser, scientists have exploited the quantum properties of a two-atom hydrogen molecule to observe changes in the electrostatic field of a target sample, turning the hydrogen molecule into a quantum sensor. ...

The physics of a singing saw

 Physics General News
 22 April 2022
Researchers have used the singing saw to demonstrate how the geometry of a curved sheet, like curved metal, could be tuned to create high-quality, long-lasting oscillations for applications in sensing, nanoelectronics, photonics and more. ...

New production method promises to end medical radioisotope shortages

 Physics General News
 21 April 2022
Technetium-99m is the world's most commonly used medical radioisotope, but regularly suffers from supply chain shortages, threatening the ability of doctors to diagnose a raft of ailments. But an alternative production technique looks set to make the radioisotope much more easily produced. ...

Lasers trigger magnetism in atomically thin quantum materials

 Physics General News
 20 April 2022
Researchers have discovered that light -- from a laser -- can trigger a form of magnetism in a normally nonmagnetic material. This magnetism centers on the behavior of electrons 'spins,' which have a potential applications in quantum computing. Scientists discovered that electrons within the...

'Dative epitaxy': A new way to stack crystal films

 Physics General News
 20 April 2022
Scientists have grown thin films of two different crystalline materials on top of each other using an innovative technique called 'dative epitaxy.' The researchers discovered the method by surprise. As a physicist explains, dative epitaxy holds layers of different materials together via a weak...

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