Search results for phonons

Nanophysics Apr 21, 2023

Examining the flow of thermal energy in purified ribbons of graphite

Scientists from the Institute of Industrial Science at The University of Tokyo studied the flow of thermal energy in purified ribbons of graphite and showed that heat can move more like a liquid, rather than diffusing randomly, ...

Nanophysics Apr 20, 2023

A particular 'sandwich' of graphene and boron nitride may lead to next-gen microelectronics

Moiré patterns occur everywhere. They are created by layering two similar but not identical geometric designs. A common example is the pattern that sometimes emerges when viewing a chain-link fence through a second chain-link ...

Condensed Matter Apr 19, 2023

Researchers reveal acoustic topological corner anomaly

Topological acoustics provides a new approach for manipulating acoustic waves using the novel wave transport phenomenon. In less than a decade, it has provided a series of promising new ideas for the directional control of ...

Condensed Matter Apr 17, 2023

The comprehensive characterization of hydrogen at ultra-high pressures

Physicists and material scientists have been trying to metallize hydrogen for many decades, but they have not yet succeeded. In 1968, British physicist Neil Ashcroft predicted that atomic metallic hydrogen would be a high-temperature ...

Condensed Matter Apr 12, 2023

High-pressure structure of a unique 2D ferromagnet clarified in recent study

According to research published in The Journal of Physical Chemistry Letters, Prof. Ding Junfeng from Institute of Solid State Physics (ISSP), Hefei Institutes of Physical Science, together with Prof. Wang Weihua from Nankai ...

Nanophysics Apr 11, 2023

Manipulating hypersound in mesoporous materials

The rapidly advancing field of nanophononics focuses on the study of hypersound, which are acoustic waves in the gigahertz to terahertz range, at the nanoscale. These high-frequency acoustic vibrations, also known as acoustic ...

Optics & Photonics Apr 4, 2023

Hot electron electrochemistry with ultrafast laser pulses

Laser-induced electrochemical deposition of metals on metals relies possibly on thermal and defect generation effects. When semiconductor substrates are chosen, locally photogenerated electrons can reduce metal ions resulting ...

Nanomaterials Apr 4, 2023

Researchers develop novel nonwovens that are electrically conductive but thermally insulating

Researchers at the University of Bayreuth present novel electrospun nonwovens in Science Advances that exhibit an unusual combination of high electrical conductivity and extremely low thermal conductivity.

Analytical Chemistry Mar 30, 2023

Novel nano-optical technology tracks communications in living cells

Microbes may be among the smallest living things on Earth, but bioimaging to understand the chemistry that fuels these organisms could reveal important clues about the intricacies of gene function and the health of the planet. ...

Bio & Medicine Mar 23, 2023

Team develops 2D ultrasound-responsive antibacterial nano-sheets to effectively address bone tissue infection

A research team led by Professor Kelvin Yeung Wai-kwok from the Department of Orthopaedics and Traumatology, School of Clinical Medicine, LKS Faculty of Medicine, the University of Hong Kong (HKUMed) has invented a non-invasive ...

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