Density gradient ultracentrifugation (DGUC) is commonly regarded as the gold standard for consistent separation of difficult ...

Gradient elution involves a programmed change in mobile-phase composition over time, transitioning from weak to strong during a separation. Linear gradients, characterized by a constant change in ...

In conventional optical components, such as lenses or gratings, the propagation of light is usually manipulated by reflection, refraction or diffraction. For example, a wavefront can be modified using ...