WHEN a concentration gradient in a vertical column of solution, for example, an ultracentrifuge cell, is investigated by a refraction method, it is desirable to obtain a diagram relating the ...

THE scale method is still regarded as the most accurate and reliable method for measuring refractive index gradients and is extensively used in diffusion and sedimentation measurements. The ...

Nanoscale optical components, such as lenses and waveguides, are used in imaging and computing platforms. Yet it’s challenging to make these components with more than one refractive index—a property ...

Researchers at Lawrence Livermore National Laboratory (LLNL), Livermore, CA, have employed multi-material 3D printing to create tailored gradient refractive index glass optics that could make for ...