Advancements in 3D Printing Revolutionize Nanoscale Optical Devices

Researchers at Caltech have developed a new technique that combines 3D printing with optical metamaterials to create nanoscale optical devices. These devices, made of structures measured in nanometers, have the potential to detect and manipulate light properties at small scales, allowing for advancements in cameras and sensors. The devices can sort incoming light by wavelength and polarization, and could be used in visible light applications. The design process involves an algorithm that continuously evolves the device's structure until it meets the desired performance criteria. The researchers used two-photon polymerization (TPP) lithography to physically create the devices. While still a proof of concept, further research could lead to practical manufacturing techniques for these nanoscale optical devices.