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Researchers create glow-in-the-dark succulents that recharge with sunlight

5 septembre 2025 à 14:17

“Picture the world of Avatar, where glowing plants light up an entire ecosystem,” describes Shuting Liu of South China Agricultural University in Guangzhou.

Well, that vision is now a step closer thanks to researchers in China who have created glow-in-the-dark succulents that recharge in sunlight.

Instead of coaxing cells to glow through genetic modification, the team instead used afterglow phosphor particles – materials similar to those found in glow-in-the-dark toys – that can absorb light and release it slowly over time.

The researchers then injected the particles into succulents, finding that they produced a strong glow, thanks to the narrow, uniform and evenly distributed channels within the leaf that helped to disperse the particles.

After a couple of minutes of exposure to sunlight or indoor LED light, the modified plants glowed for up to two hours. By using different types of phosphors, the researchers created plants that shine in various colours, including green, red and blue.

The team even built a glowing plant wall with 56 succulents, which was bright enough to illuminate nearby objects.

“I just find it incredible that an entirely human-made, micro-scale material can come together so seamlessly with the natural structure of a plant,” notes Liu. “The way they integrate is almost magical. It creates a special kind of functionality.”

The post Researchers create glow-in-the-dark succulents that recharge with sunlight appeared first on Physics World.

Physics meets fashion as bioluminescent dress debuts at Paris Haute Couture Week

11 juillet 2025 à 16:42

Fashion designer Iris van Herpen has unveiled a bioluminescent dress that features 125 million living algae. The garment involved Herpen collaborating with designer Chris Bellamy as well as biophysicists Nico Schramma and Mazi Jalaal from the University of Amsterdam.

bioluminescent dress
Dress to impress: the “living” garment was part of van Herpen’s new fashion collection – Sympoiesis (courtesy: Molly SJ Lowe, for Iris van Herpen)

Bioluminescence is the production of light by a living organism, caused by a chemical reaction such as the molecule luciferin reacting with oxygen to release light.

The bioluminescent dress is composed of a gel material that incorporates millions of single celled bioluminescent algae of the species Pyrocystis lunula, named after their moon-like shape.

In the wild, the bioluminescent algae emit light as a defence mechanism. The flash serves as a warning signal that attracts secondary predators, which hunt the main predator of the cells.

In 2019, Jalaal, Schramma and colleagues began to study how the cells respond to mechanical stresses. By combining microscopy and mechanical tests, they were able to measure the light-emission of the cells and how it depended on deformation, which led to a mathematical model that described the light-production mechanism (Phys. Rev. Lett. 125 028102).

The researchers then worked with Chenghai Li and Shengqiang Cai at the University of California San Diego and bioluminescence researcher Michael Latz from the Scripps Institution of Oceanography in San Diego.

They incorporated the cells in a gel matrix to create a flexible yet resistant substance that emits light upon deformation and movement while at the same time keeping the cells alive.

Bellamy and van Herpen developed and refined the bioluminescent material and incorporated it into a spectacular “living” garment, which on Monday was part of van Herpen’s new fashion collection – Sympoiesis – that was unveiled at Paris Haute Couture Week.

The post Physics meets fashion as bioluminescent dress debuts at Paris Haute Couture Week appeared first on Physics World.

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