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Progress in photovoltaic technology could soon mean grid parity for solar electricity. In this issue we highlight scientific as well as science-policy strategies aimed towards achieving this goal.
For decades, solar-cell efficiencies have remained below the thermodynamic limits. However, new approaches to light management that systematically minimize thermodynamic losses will enable ultrahigh efficiencies previously considered impossible.
The funding approach taken by the US Department of Energy's SunShot programme, which aims to develop competitive solar technology, has proved very successful. Its director, R. Ramesh, explains why.
Mast cells induce protective immune responses through secretion of stimulatory granules. Microparticles modelled after mast-cell granules are now shown to replicate and enhance the functions of their natural counterparts and to direct the character of the resulting immunity.
The contact angle of water drops on substrates for which the wettability is dominated by van der Waals forces remains unchanged when the substrates are coated with a monolayer of graphene. Such 'wetting transparency' could lead to superior conducting and hydrophobic graphene-coated surfaces with...
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