How to Convert a Smartphone to a Microscope

Brightfield and darkfield imaging modes enable microscopic visualisation of plant samples and mammalian cells

Metasurfaces for Apochromatic Lenses

One layered lens can perfectly focus all three colors and do the work of three conventional lenses

Metasurface Converts Colors of Light

Structures of phased array antennas are able to circumvent the phase-matching requirement

Single Metalens Focuses White Light

Ground-breaking lens opens new possibilities in virtual and augmented reality

UV-Light for Rapid Data Transfer

A high-speed near-solar-blind communication link with a data rate of 71 Mbit/s was achieved

X-Ray Microscopy With Record Resolution

First X-ray focus below 10 nanometres diameter at Hamburg achieved

Metalenses With Tunable Features

New devices, made of graphene and a punctured gold surface, could be used for amplitude tunable lenses

Microlenses From Spray Cans

Optic switch elements can be constructed from droplets of cyanine dye

Solar Glasses Generate Solar Power

Semitransparent organic solar cells power a microprocessor

Artificial Iris Reacts Like the Human Eye

New photonic device for micro-robots is based on a light-actuated liquid crystal elastomer