Engineers make clear droplets produce iridescent colors

Engineers at MIT and Penn State University have found that under the right conditions, ordinary clear water droplets on a transparent surface can produce brilliant colors, without the addition of inks or dyes.

'Meta-mirror' reflects sound waves in any direction

Researchers at Duke University and Aalto University (Finland) have constructed a "meta-mirror" device capable of perfectly reflecting sound waves in any direction. The proof-of-principle demonstration is analogous to looking ...

Western-led team may unlock rocky secrets of Mars

Humankind may be able to reach further back into the history of its nearest planetary neighbour, unlocking the secrets to the evolution, climate, and habitability of Mars, thanks to the efforts of a Western-led team tapped ...

Iron-rich lamellae in a semiconductor

There is often a pronounced symmetry when you look at the lattice of crystals: It doesn't matter where you look—the atoms are uniformly arranged in every direction. This behavior would also be expected of a crystal, which ...

Mycoplasma genitalium's cell adhesion mechanism revealed

Researchers from the Molecular Biology Institute of Barcelona (IBMB-CSIC) and the Institute of Biotechnology and Biomedicine (IBB-UAB) have discovered the mechanism by which the bacterium Mycoplasma genitalium (Mgen) adheres ...

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