Liquid Crystal Phonon Lenses

Liquid crystals are substances that have some form of crystalline structure and exhibit some characteristics of crystals but flow like a liquid. They form long thin molecules that have either some electromagnetic component or an optical component such as light polarization. Liquid Crystal Displays (LCD) use these electrical and optical qualities of liquid crystals to control light reflection in a display unit.

When the science of colloidal crystals was merged with liquid crystals, it became possible to create liquid crystal lenses to focus waves of sound vibrations, known as phonons, as well as control their two way interaction with light. Liquid Crystal Phonon Lenses (LCPL) use controlled sound waves, standing wave patterns and interference patterns to control light and have created a whole new range of optical switching devices.

Photonic Colloidal Crystals
Crystal-like Structure

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