Retroreflection of Nanostructures

New surfaces covered by a metamaterial consisting of millions of silicon pillars

First Flat Lens for Immersion Microscope

Metalenses can be tailored for any immersion liquid

Stretchable Holograms Switch Between Multiple Images

Metasurfaces on stretchable substrates can serve as reconfigurable optical devices

Waveguides for Better Optical Chips

Most efficient way to control light in waveguides with optical nano-antenna

Metasurface Controls Laser Polarization

Without waveplates the laser’s polarization state can be tuned purely electronically

Holograms in a Metasurface

This advancement could be used for anti-fraud protection and entertainment

Lossless Metamaterial Developed

First material that behaves simultaneously as a metal and a semiconductor

Optical Metamaterial without Metal

Prototype consists of hundreds of boron-doped silicon cylinders

Metasurfaces for Flat Lenses

Flat sheets with silicon nanoposts adjust the path of light

Light Changes Properties of Metamaterials

Dielectric phase-change material for a reconfigurable metasurface