Category Physics

Scientists Trap Light inside a Magnet

Vinod_Florian magneto-optical research
Light trapped inside a magnetic crystal can strongly enhance its magneto-optical interactions. Image created by Rezlind Bushati.

A new study led by Vinod M. Menon and his group at the City College of New York shows that trapping light inside magnetic materials may dramatically enhance their intrinsic properties. Strong optical responses of magnets are important for the development of magnetic lasers and magneto-optical memory devices, as well as for emerging quantum transduction applications.

In their new article in Nature, Menon and his team report the properties of a layered magnet that hosts strongly bound excitons — quasiparticles with particularly strong optical interactions. Because of that, the material is capable of trapping light — all by itself...

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Researchers fabricate Phase-Heterojunction All-Inorganic Perovskite Solar Cells with an Efficiency Above 21.5%

Phase-heterojunction all-inorganic perovskite solar cells with an efficiency above 21.5%
Schematic representation of fabrication of phase-heterojunction perovskite solar cells. Credit: Mali et al.

Solar technologies have become increasingly advanced over the years, with the discovery of new photovoltaic materials and designs. While solar cells based on a mixture of organic and inorganic halide perovskite materials have been the topic of numerous research studies and achieved promising performances, these cells are often difficult to fabricate on a large-scale.

Researchers at Chonnam University in South Korea recently introduced an alternative solar cell design fully based on inorganic perovskites. Their solar cells, introduced in Nature Energy, could be easier to fabricate on a large-scale, while nonetheless achieving promising power conversion efficiencies (PCEs).

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A new Bio-inspired Solar Leaf design with Increased Harvesting Eficiency

Concept of a PV-branch of PV-leaves
Concept of a PV-branch of PV-leaves. Gan Huang

New research suggests a new solar energy design, inspired by nature, may pave the way for future renewable energy technologies.

Photovoltaic solar energy is obtained by converting sunshine into electricity—and researchers from Imperial have developed a new leaf-like design with increased efficiency.

The new photovoltaic leaf (PV-leaf) technology uses low-cost materials and could inspire the next generation of renewable energy technologies.

A series of experiments has demonstrated that a PV-leaf can generate over 10% more electricity compared to conventional solar panels, which lose up to 70% of the incoming solar energy to the environment...

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Scientists Discover Novel Way of Reading Data in Antiferromagnets, Unlocking their use as Computer Memory

A microscopic image of the tiny device containing antiferromagnetic manganese bismuth telluride (green) that the Nanyang Technological University, Singapore researchers did their experiments on. The lines (light yellow) radiating from the centre are electrodes from which current was passed through the manganese bismuth telluride. (Image: NTU Singapore)

Scientists led by Nanyang Technological University, Singapore (NTU Singapore) investigators have made a significant advance in developing alternative materials for the high-speed memory chips that let computers access information quickly and that bypass the limitations of existing materials.

They have discovered a way that allows them to make sense of previously hard-to-read data stored in these alternative materials, known as antifer...

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