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Physics

Tiniest 'ruler' ever measures distances as small as an atom's width

A new technique uses glowing molecules, laser light and microscopes to measure distances as minuscule as 0.1 nanometres – the width of a typical atom

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Light effects

Physics

Quantum holograms can send messages that disappear

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Liquid crystals could improve quantum communication devices

Physics

Liquid crystals could improve quantum communication devices

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How materials that rewind light can test physics' most extreme ideas

Physics

How materials that rewind light can test physics' most extreme ideas

Features

Physics

Doughnut-shaped swirls of laser light can be used to transmit images

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light-trapping device

Physics

Quantum forces used to automatically assemble tiny device

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Chemistry

Gold flecks make super-transparent glass fully opaque from one side

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Schematic image of GaN hollow nanowires on a sapphire substrate.

Technology

Lasers smaller than a human hair emit doughnut-shaped light

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abstract image of light

Physics

Einstein may be wrong about how mirrors travelling at light speed work

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The new design could be used on contact lenses

Technology

Spiral scratches on contact lenses can turn them into multifocals

Inscribing a spiral in the centre of a contact lens seems to create optical vortices that interact so that the lens provides a clear image of objects at all distances

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Chemistry

Light-sensitive molecules could make carbon capture more efficient

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Space

Galaxy smash-ups may explain strange light from early universe

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Technology

‘Insect-eye’ compass can navigate by the sun even on a cloudy day

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Physics

Nobel prize for physics goes to trio who sliced up time with light

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