A paint that gets its colour from aluminium nanoparticles rather than pigment is also incredibly lightweight and reflective
Pablo Cencillo-Abad, Daniel Franis so lightweight that using it on a Boeing 747 could cut the plane’s mass by half a tonne.
To make the paint, Chanda and his team used a beam of electrons to deposit aluminium nanoparticles on a mirror of the same material. The distance between these particles, which is set by how quickly the particles are deposited, determines the wavelengths of light that they “absorb”, with the leftover wavelengths being the colour of the paint. This means Chanda and his team can easily choose the paint’s colour.
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