Search results for phonons

Nanomaterials Sep 26, 2023

Thiol ligands modify metal nanocluster structures and optical properties

Metal nanoclusters are tiny, crystalline structures up to two nanometers (2 x 10-9 meters) in diameter that contain a few to hundreds of metal atoms. Understanding the precise assembly of metal nanoclusters is paramount ...

Quantum Physics Sep 26, 2023

New spin-squeezing techniques let atoms work together for better quantum measurements

Opening new possibilities for quantum sensors, atomic clocks and tests of fundamental physics, JILA researchers have developed new ways of "entangling" or interlinking the properties of large numbers of particles. In the ...

Condensed Matter Sep 18, 2023

New quasi-particle bridges microwave and optical domains

In a paper published today (Sept. 18) in Nature Communications, researchers from the Paul-Drude-Institut in Berlin, Germany, and the Instituto Balseiro in Bariloche, Argentina, demonstrated that the mixing of confined quantum ...

Condensed Matter Aug 31, 2023

Discovering enhanced lattice dynamics in a single-layered hybrid perovskite

Layered hybrid perovskites show diverse physical properties and exceptional functionality; however, from a materials science viewpoint, the co-existence of lattice order and structural disorder can hinder the understanding ...

Optics & Photonics Aug 28, 2023

Manipulating polaron transport via laser-induced coherent phonons

Polarons are quasiparticles composed of excess electrons dressed with virtual phonon clouds. They are ubiquitous in materials and play a key role in various physicochemical properties, including superconductivity, photocatalysis ...

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

Physicists employ synthetic complex frequency waves to overcome optical loss in superlenses

A collaborative research team led by Interim Head of Physics 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 Physics 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 ...

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