Abstract: Methods and devices are provided for the beam steering, focusing, display, and generation of light and images by electronically induced refractive index gradients and scattering fields formed by forces on particles in a colloid due to phoretic processes. The methods and devices provide control over multi-octave bandwidth and polarization diverse light having a large dynamic range in power handling. Embodiments of the technique are provided for large-angle beam steering, beam combining, focusing, and redirecting light electronically. Diverse applications for the technology include, but are not limited to: solar concentrators, LiDAR, robotic vision, smartphone zoom lenses, 3D-manufacturing, high-power laser machining, augmented & virtual reality displays, electronic paper displays, computer and television displays.

Abstract: A general method is provided for electronically reconfiguring the internal structure of a solid to allow precision control of the propagation of wave energy. The method allows digital or analog control of wave energy, such as but not limited to visible light, while maintaining low losses, a multi-octave bandwidth, polarization independence, large area and a large dynamic range in power handling. Embodiments of the technique are provided for large-angle beam steering, lenses and other devices to control wave energy.