Liquid Crystal Types: Smectic Liquid Crystal And Nematic Liquid Crystal

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There are three types of liquid crystal: nematic, smectic and cholesteric. In the liquid crystalline phase, the vector about which the molecules are preferentially oriented, n, is known as the “director”. The long axes of the molecules will tend to align in this direction.     Nematic liquid crystals were first studied by Faraday in 1848. He observed that when he passed a current through a solution of copper sulfate, it caused some of the particles to line up in one direction. This alignment was reversible and depended on the strength of the electric field.

What is a liquid crystal?

Liquid crystals are a type of matter that have properties between those of a liquid and a solid. For example, like liquids, they flow and take the shape of their container. However, like solids, they have a definite structure and are not symmetrical. Liquid crystals are found in nature, but they can also be artificially created.

The most well-known artificial liquid crystal is LCD, or liquid crystal display. This is the type of screen used in digital watches and computers. Liquid crystals are also used in medical devices such as thermometers and in optical fibers. Researchers are also exploring the potential use of liquid crystals in solar cells and light-emitting diodes.

Liquid Crystal Types

What difference between the smectic liquid crystal and the nematic liquid crystal?

Smectic and nematic liquid crystals are both composed of long, rod-like molecules. The major difference between the two is the way in which these molecules are arranged. In a smectic liquid crystal, the molecules are arranged in layers, with each molecule aligning itself parallel to those in the adjacent layer.

This gives the smectic liquid crystal a layered structure. In contrast, the molecules in a nematic liquid crystal are not arranged in layers. Instead, they are aligned in a single direction, resulting in a non-layered structure. Because of this difference in structure, smectic and nematic liquid crystals have different properties.

For example, smectic liquid crystals are often used in displays because of their ability to diffract light, while nematic liquid crystals are commonly used in electro-optical devices due to their strong electrical properties.

What are the applications of Smectic and nematic liquid crystals?

Smectic and nematic liquid crystals are a state of matter that exhibits both fluid and solid properties. In a smectic liquid crystal, the molecules are aligned in layers, while in a nematic liquid crystal, the molecules are aligned in parallel chains. These materials have a wide range of applications, including display technologies, optical telecommunications, and electro-optical devices. Smectic and nematic liquid crystals are also finding increasing use in biomedical applications such as drug delivery and tissue engineering. The unique properties of these materials make them an ideal choice for a wide variety of applications.

Why you should choose Daken Chem for the liquid crystal polymer?

Daken Chem is the leading manufacturer of liquid crystal polymers. Our products are used in a variety of applications, including electronics, optoelectronics, and medical devices. We offer a wide range of products, including both standard and custom formulations. Our team of experts can help you choose the right product for your application. We also offer a comprehensive range of services, including custom synthesis and prototyping. Contact us today to learn more about our products and services.

Below are part of our main products: 

Product CAS NO.
4-tert-Butylthiophenol 2396-68-1
RM257 174063-87-7
R6M RM82 125248-71-7
RM23 83847-14-7
RM105 82200-53-1
LC242 187585-64-4
4-((6-(methacryloyloxy)hexyl)oxy)benzoic acid 91652-00-5 
2,5-Dihydroxybenzaldehyde 1194-98-5
6-(4-hydroxyphenoxy)hexyl acrylate 161841-12-9
4-((6-(acryloyloxy)hexyl)oxy)benzoic acid 83883-26-5
4-((11-(acryloyl oxy)undecyl)oxy)benzoic acid 106620-90-0
4-(6-Acryloyloxyhexyloxy)-benzoesure(4-(trans-4-propylcyclohexyl)-phenylester) 182311-45-1
Nafamostat mesylate  82956-11-4

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