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Tiny pieces of plastic are an increasingly big problem. Known as microplastics, they originate from clothing, kitchen utensils, personal care products, and countless other everyday objects. Their durability makes them persistent in the environment – including in human bodies.

Not only are many people on Earth already contaminated by microplastics, but we’re also still being exposed every day, as there is minimal regulation of these insidious specks.

According to a new literature review, a significant portion of our microplastic exposure may come from drinking water, as wastewater treatment plants are still not effectively removing microplastics.

Converting sunlight into electricity is the task of photovoltaic solar cells, but nearly half the light that reaches a flat silicon solar cell surface is lost to reflection. While traditional antireflective coatings help, they only work within a narrow range of light frequency and incidence angles. A new study may have overcome this limit.

As reported in Advanced Photonics Nexus, researchers have proposed a new type of antireflective coating using a single, ultrathin layer of polycrystalline silicon nanostructures (a.k.a. a metasurface). Achieving minimal reflection across certain wavelengths and angles, the metasurface was reportedly developed by combining forward and inverse design techniques, enhanced by (AI).

The result is a coating that sharply reduces reflection across a wide range of wavelengths and angles, setting a new benchmark for performance with minimal material complexity.

A team led by Rice University bioscientist Caroline Ajo-Franklin has discovered how certain bacteria breathe by generating electricity, using a natural process that pushes electrons into their surroundings instead of breathing on oxygen.

The findings, published in Cell, could enable in clean energy and industrial biotechnology.

By identifying how these bacteria expel electrons externally, the researchers offer a glimpse into a previously hidden strategy of bacterial life. This work, which merges biology with electrochemistry, lays the groundwork for future technologies that harness the unique capabilities of these microscopic organisms.