Photonic Crystals - Rewritable Photonic Paper


Product

Photonic crystals allow light photons to be controlled as electrons are controlled through semiconductors.

Process
UFe3O4@SiO2 colloids exposed to a magnetic field and cured with a UV process to fix the photonic structures inside the PEGDA matrix. A hydro-scopic salt solution reacts with the hotonic crystals, diffracting colors onto the paper. Rinsing the paper with water returns removes all trace of the reaction.


Applications
Graphic printing is looking to this proces because of its rewritability, low toxicity of the manufacturing materials and inks, it is inexpensive. Structurally, photonic paper is sturdier and brighter than traditional papers. This paper is actually brighter than liquid crystal.