Search results for optoelectronics

Condensed Matter Aug 21, 2025

Hidden symmetries unlock new ways to control light in quantum materials

A team of researchers has discovered how a little-known type of symmetry in quantum materials, called nonsymmorphic symmetry, governs the way these materials interact with intense laser light.

Condensed Matter Aug 21, 2025

Defect engineering accelerates carrier relaxation in GaN-based LEDs

A study conducted by researchers from the Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) of the Chinese Academy of Sciences has demonstrated how nitrogen vacancies (VN) resolve asymmetric carrier injection ...

Optics & Photonics Aug 20, 2025

Simple additive method leads to record-setting perovskite laser performance

For years, engineers have sought better ways to build tiny, efficient lasers that can be integrated directly onto silicon chips, a key step toward faster, more capable optical communications and computing.

Nanophysics Aug 18, 2025

X-ray flashes reveal how electron-hole pairs tug at atoms inside quantum dots

When light hits solar cells, so-called electron-hole pairs are created: the electrons are excited and can move almost freely in the material—i.e. to generate electricity. The electrons will leave 'positive gaps," so-called ...

Condensed Matter Aug 15, 2025

New co-assembly strategy unlocks robust circularly polarized luminescence across the color spectrum

Researchers at the College of Design and Engineering (CDE) at the National University of Singapore (NUS) have developed a supramolecular co-assembly platform that produces chiral soft materials with strong and stable full-color ...

Condensed Matter Aug 14, 2025

Researchers observe evidence of hyperbolic exciton polaritons

The ability to move electron-hole pairs—called excitons—in desired directions is important for generating electricity and creating fuels. This happens naturally in photosynthesis, making it a source of inspiration to researchers ...

Optics & Photonics Aug 14, 2025

Energy-efficient ultracompact laser reduces light loss in all directions

An international team of scientists led by Nanyang Technological University, Singapore (NTU Singapore) has developed a new type of ultracompact laser that is more energy efficient and consumes less power.

Optics & Photonics Aug 11, 2025

Wafer-scale nano-fabrication of multi-layer diffractive optical processors enables unidirectional visible imaging

Researchers at the UCLA Samueli School of Engineering, in collaboration with the Optical Systems Division at Broadcom Inc., report a broadband, polarization-insensitive unidirectional imager that operates in the visible spectrum, ...

Analytical Chemistry Aug 11, 2025

Rethinking imperfections: How defects are powering brighter perovskite emissions

In materials science, defects are usually seen as problems, unwanted microscopic features that degrade performance, reduce efficiency or shorten the lifespan of devices. But a recent breakthrough published in Advanced Materials ...

Analytical Chemistry Aug 7, 2025

Simple color-changing sensor quickly identifies poisonous gases

Not all poisonous gases have a smell or a color. But a tiny grid of pastel- and candy-colored squares that effectively "sniffs" out hazardous chemicals in the air such as chlorosarin—a highly toxic nerve agent—could help ...

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