04/05/2018

Towards sustainable blockchains

As blockchains become ever more popular and widespread, a growing concern is their sustainability. Current designs, most notably the blockchain underlying the Bitcoin cryptocurrency, are secured using so-called "proofs of ...

Viral infection a matter of simple physics

The manner in which some viruses inject their DNA into bacteria or other types of cells appears to be much simpler than scientists had previously thought. Rather than using molecular engines or complicated mechanisms, viruses ...

Plants get a brace to precisely shed flowers and leaves

In the spring, pink cherry blossom petals are borne by the wind. Each of the falling petals leaves behind a little open cut on the plant, which might be prone to infection. The same happens when plants shed leaves, fruits ...

Researchers subtract a single quantum of light from a laser beam

In a collaboration between Aarhus University and the University of Southern Denmark, researchers have discovered a way to subtract a single quantum of light from a laser beam. This work has recently been published in Physical ...

Electron-hole pairs in two-dimensional crystals

When light of specific frequency hits a semiconductor crystal, it is absorbed and produces excitation, a state of higher energy. In solar cells, this energy is converted into electricity. In two-dimensional crystals, which ...

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