액정
Liquid crystal polymers (LCPs) are polymers with the property of liquid crystal, usually containing aromatic rings as mesogens. Despite uncrosslinked LCPs, polymeric materials like LCEs (liquid crystal elastomers) and LCNs (liquid crystal networks) can exhibit liquid crystallinity as well. They are both crosslinked LCPs but have different cross link density. They are already widely used in the display market. In addition, LCPs have unique properties like thermal actuation, anisotropic swelling, and soft elasticity. Therefore, they can be good actuators and sensors. One of the most famous and classical applications for LCPs is Kevlar, a strong but light fiber with wide applications like a bulletproof vest.