Twist-bend nematic liquid crystal (LC) dimer-based material and use thereof, and LC-based cholesteric heliconical (CH) material and use thereof

An ambient-temperature stable non-crystalline LC cholesteric heliconical (CH) material, consisting of the following components by mass percentage:

• 45% to 55% of an ambient-temperature stable non-crystalline NTB LC material, 40% to 52% of a nematic LC monomer material, and 0.1% to 10% of a chiral molecule;
• wherein
• the ambient-temperature stable non-crystalline NTB LC material consists of the following components by mass percentage:
• 30% to 60% of CB7CB, 15% to 45% of CB9CB, and 15% to 25% of CB11CB;
• wherein
• the CB7CB has a structure as follows:
• the CB9CB has a structure as follows:
• and
• the CB11CB has a structure as follows: