Articles from Science Daily Physics News

Shape matters for light-activated nanocatalysts

Points matter when designing nanoparticles that drive important chemical reactions using the power of light, according to recent research.

New design principles for spin-based quantum materials

A new design criteria for enhancing the spin lifetime of a class of quantum materials could support Internet of Things devices and other resource-intensive technologies.

Promising computer simulations for stellarator plasmas

The turbulence code GENE (Gyrokinetic Electromagnetic Numerical Experiment), has proven to be very useful for the theoretical description of turbulence in the plasma of tokamak-type fusion devices. Extended for the more complex geometry of stellarator-type devices, computer simulations with GENE now indicate a new method to reduce plasma turbulence in stellarator plasmas. This could significantly increase the efficiency of a future fusion power plant.

Nano-microscope gives first direct observation of the magnetic properties of 2D materials

Widefield nitrogen-vacancy microscope solves problem of there being no way to tell exactly how strongly magnetic a 2D material was.

New calculation refines comparison of matter with antimatter

An international collaboration of theoretical physicists has published a new calculation relevant to the search for an explanation of the predominance of matter over antimatter in our universe. The new calculation gives a more accurate prediction for the likelihood with which kaons decay into a pair of electrically charged pions vs. a pair of neutral pions.

Self-imaging of a molecule by its own electrons

Researchers have shown that high-resolution movies of molecular dynamics can be recorded using electrons ejected from the molecule by an intense laser field.

Novel photoresist enables 3D printing of smallest porous structures

Researchers have developed a photoresist for two-photon microprinting. It has now been used for the first time to produce three-dimensional polymer microstructures with cavities in the nano range. The scientists report how porosity can be controlled during printing and how this affects light scattering properties of the microstructures.

Engineers improve signal processing for small fiber optic cables

Tiny circuits can go the distance. Researchers have mapped a noise-reducing magneto-optical response that occurs in fiber-optic communications, opening the door for new materials technologies.

A quantum thermometer for measuring ultra-cold temperatures

In everyday life, measuring temperature is pretty straightforward. But in the quantum world, which deals with the super small and the ultra-cold, determining how hot or cold something is starts to get more challenging. Now researchers have described a quantum process that uses a single atom as a thermometer to sensitively measure the temperature of an ultra-cold gas.

Reviewing the quantum material 'engine room'

An Australian collaboration reviews the quantum anomalous Hall effect (QAHE), one of the most fascinating and important recent discoveries in condensed-matter physics. QAHE allows zero-resistance electrical 'edge paths' in emerging quantum materials such as topological insulators, opening great potential for ultra-low energy electronics.