Âé¶¹ÒùÔº

See also stories tagged with Phonon

Search results for phonon

Condensed Matter Aug 23, 2023

Guiding the design of silicon devices with improved efficiency

Silicon is one of the most pervasive functional materials of the modern age, underpinning semiconductor technologies ranging from microelectronics to solar cells. Indeed, silicon transistors enable computing applications ...

Optics & Photonics Aug 21, 2023

Âé¶¹ÒùÔºicists employ synthetic complex frequency waves to overcome optical loss in superlenses

A collaborative research team led by Interim Head of Âé¶¹ÒùÔºics Professor Shuang Zhang from The University of Hong Kong (HKU), along with National Center for Nanoscience and Technology, Imperial College London and University ...

Nanomaterials Aug 15, 2023

Researchers attach electrodes to individual atomically precise graphene nanoribbons

Graphene nanoribbons have outstanding properties that can be precisely controlled. Researchers from Empa and ETH Zurich, in collaboration with partners from Peking University, the University of Warwick and the Max Planck ...

General Âé¶¹ÒùÔºics Aug 7, 2023

Uncovering the Auger-Meitner effect's crucial role in electron energy loss

Defects often limit the performance of devices such as light-emitting diodes (LEDs). The mechanisms by which defects annihilate charge carriers are well understood in materials that emit light at red or green wavelengths, ...

Condensed Matter Jul 27, 2023

Controlling the electro-optic response of a perovskite coupled to a phonon-resonant cavity

Electron-phonon scattering is often the primary mechanism limiting electron mobility in semiconductors. Thus, changing phonon properties can provide a way to control conductivity. Recently, there has been a growing interest ...

Condensed Matter Jul 27, 2023

Some alloys don't change size when heated, and we now know why

Nearly every material, whether it is solid, liquid, or gas, expands when its temperature goes up and contracts when its temperature goes down. This property, called thermal expansion, makes a hot air balloon float, and the ...

Condensed Matter Jul 24, 2023

'Quantum avalanche' explains how nonconductors turn into conductors

Looking only at their subatomic particles, most materials can be placed into one of two categories.

Condensed Matter Jul 21, 2023

Calculating thermal properties from phonon behaviors

A new study determines the thermal properties of advanced solid materials, based on first-principles calculations of quantum vibrations.

Condensed Matter Jul 20, 2023

Discovery may lead to terahertz technology for quantum sensing

Visible light is a mere fraction of the electromagnetic spectrum, and the manipulation of light waves at frequencies beyond human vision has enabled such technologies as cell phones and CT scans.

Condensed Matter Jul 20, 2023

New record set for highest elemental superconducting transition temperature

A research team led by Prof. Chen Xianhui from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS), collaborating with the team led by Prof. Sun Jian from Nanjing University, ...

page 23 from 40