Search results for phonons

Condensed Matter Nov 18, 2021

Researchers observe localized phonon modes at a heterointerface

Phonons—the quasiparticle describing lattice vibrations in solids—directly dictates various properties of solid state systems, such as the thermal conductivity, electron mobility, structural stability and conventional ...

Condensed Matter Nov 18, 2021

Ultrafast exciton dissociation mechanism in 2D perovskites

A research group led by Prof. Jin Shengye from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences revealed an ultrafast and high-yield polaronic exciton dissociation mechanism in two-dimensional ...

Optics & Photonics Nov 10, 2021

Adding sound to quantum simulations

When sound was first incorporated into movies in the 1920s, it opened up new possibilities for filmmakers such as music and spoken dialogue. Physicists may be on the verge of a similar revolution, thanks to a new device developed ...

Condensed Matter Nov 10, 2021

New phonon-based and magneto-tunable monochromatic terahertz source

Terahertz (THz, 1,011~1,013 Hz) related technology, with its superior spectral performance, has wide application potential in fields like communication, security, sensing, etc.

Nanophysics Nov 4, 2021

Graphene research sounds out new possibilities for electronic technologies

A team of researchers has revealed that sonic boom and Doppler-shifted sound waves can be created in a graphene transistor, giving new insights into this world-famous material and its potential for use in nanoscale electronic ...

Nanomaterials Oct 28, 2021

Researchers demonstrate graphene-based nanoelectromechanical periodic array with tunable frequency

Phononic crystals (PnCs) are artificial structural composites with periodic modulation of elastic parameters, and they are capable of regulating the propagation of sound waves. Devices with different geometric parameters ...

Optics & Photonics Oct 21, 2021

New photonic chip for isolating light may be key to miniaturizing quantum devices

Light offers an irreplaceable way to interact with our universe. It can travel across galactic distances and collide with our atmosphere, creating a shower of particles that tell a story of past astronomical events. Here ...

Nanophysics Oct 19, 2021

Graphene's magic act relies on a small twist

Carbon is not the shiniest element, nor the most reactive, nor the rarest. But it is one of the most versatile.

General Physics Oct 18, 2021

Ultrafast magnetism: Heating magnets, freezing time

Magnetic solids can be demagnetized quickly with a short laser pulse, and there are already so-called HAMR (Heat Assisted Magnetic Recording) memories on the market that function according to this principle. However, the ...

Quantum Physics Oct 12, 2021

Ultrafast and coupled: Atomic vibrations in the quantum material boron nitride

Materials consisting of a few atomic layers display properties determined by quantum physics. In a stack of such layers, vibrations of the atoms can be triggered by infrared light. New experimental and theoretical work shows ...

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