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Optics & Photonics Dec 12, 2023

Fine-tuning gold nanoparticles in tellurite glass for unique photonics

Silicate glass is a commonly-used glass found in most households, in drinking glasses or windowpanes for example. The integration of gold nanoparticles (NPs) in silicate glass has been used in art and decoration for centuries. ...

Condensed Matter Dec 7, 2023

Polaritons open up a new lane on the semiconductor highway

On the highway of heat transfer, thermal energy is moved by way of quantum particles called phonons. But at the nanoscale of today's most cutting-edge semiconductors, those phonons don't remove enough heat. That's why Purdue ...

Nanophysics Dec 4, 2023

Researchers show excited electrons straightening the skewed lattice of perovskite nanocrystals

Researchers from ETH Zurich, Empa and Stanford have taken snapshots of the crystal structure of perovskite nanocrystals as it was deformed by excited electrons. To their surprise, the deformation straightened out the skewed ...

General Physics Nov 30, 2023

Researchers show an old law still holds for quirky quantum materials

Long before researchers discovered the electron and its role in generating electrical current, they knew about electricity and were exploring its potential. One thing they learned early on was that metals were great conductors ...

Nanophysics Nov 28, 2023

Is graphene the best heat conductor? Researchers investigate with four-phonon scattering

Graphene, a material which consists of a single layer of carbon atoms, has been celebrated by many as the "next big thing" in material science. But according to Purdue University researchers, its thermal properties may not ...

Condensed Matter Nov 28, 2023

The secret life of an electromagnon: Research takes a step toward ultrafast control of magnetism with light

Scientists have revealed how lattice vibrations and spins talk to each other in a hybrid excitation known as an electromagnon. To achieve this, they used a unique combination of experiments at the X-ray free electron laser ...

Nanophysics Nov 13, 2023

Researchers' breakthrough in thermal transport could enable novel cooling strategies

Vanderbilt mechanical engineering professors Deyu Li and Josh Caldwell are part of a team of researchers who have discovered a new heat dissipation channel using phonon polaritons that could have extensive implications for ...

Condensed Matter Nov 9, 2023

Study leverages chiral phonons for transformative quantum effect

Quantum materials hold the key to a future of lightning-speed, energy-efficient information systems. The problem with tapping their transformative potential is that in solids, the vast number of atoms often drowns out the ...

Optics & Photonics Nov 7, 2023

'Hot' new form of microscopy examines materials using evanescent waves

Microscopes usually use backscattered radiation to create images, but a research group from the Institute of Industrial Science at the University of Tokyo is developing a new method to study materials using the faint light ...

Optics & Photonics Nov 3, 2023

Surface-specific nonlinear optical spectroscopy comes into terahertz range

Second order surface-specific nonlinear optical spectroscopy, e.g. sum-frequency spectroscopy, has made significant and continuous success in revealing the microscopic structures at surfaces/interfaces since the 1990s.

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