Meta-surface corrects for chromatic aberrations across all kinds of lenses

Today’s optical systems — from smartphone cameras to cutting-edge microscopes — use technology that hasn’t changed much since the mid-1700s. Compound lenses, invented around 1730, correct the chromatic aberrations that cause lenses to focus different wavelengths of light in different spots. While effective, these multi-material lenses are bulky, expensive, and require precision polishing or molding […]

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Hungry ticks work harder to find you

Ticks are hardy little brutes that can go as long as a year without a meal. Now scientists at the University of Cincinnati say the hungrier ticks are, the harder they try to find you or other hosts. The findings could have implications for the spread of tick-borne disease such as Lyme or Rocky Mountain […]

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Electrical cable triggers lightweight, fire-resistant cladding discovery

A University of Melbourne researcher has led the successful development of an organic, non-combustible and lightweight cladding core — a product that was previously thought to be impossible to create. Typically, lightweight cladding is made from organic, carbon-based, composite materials like plastic, but these materials by their nature are combustible. Non-combustible materials like steel, ceramic […]

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The Trojan horse of Staphylococcus aureus

Staphylococcus aureus causes different types of infections in humans, some of which are lethal. One of its most powerful weapons is α-toxin, which destroys host cells by forming pores in their membranes. Researchers at the University of Geneva (UNIGE), Switzerland, have identified the mechanism that allows these pores to be particularly harmful, by being anchored […]

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Frogs breed young to beat virus

Frogs from groups exposed to a deadly virus are breeding at younger ages, new research suggests. Scientists studying European common frogs in the UK compared groups (“populations”) exposed to ranavirus and those free from the disease. While the youngest breeding frogs in disease-free populations are four years old, frogs in virus-exposed groups breed as young […]

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