KEY FEATURES Convenient, stand-alone bench-top operation Versatile – compatible with all standard...
DetailsLiquid crystal (LC) is a unique substance that shares properties of both liquids and solid crystals. It can flow like a liquid, but its molecules can be organized like a crystal. There are many kinds of LC phases, which we can tell apart by their optical properties. The differences in these properties are due to the orientation of the molecules within the material.
Not all LC materials will always be in an LC state, just like water can be in the form of ice or vapor. There are three main types of liquid crystals: thermotropic, lyotropic, and metallotropic. The simplest kind of liquid crystal phase is the nematic phase. In this phase, the molecules align parallel to each other but are free to flow and their positions are randomly distributed, similar to a liquid.
The chiral nematic phase is another type of LC phase that shows chirality, or handedness. This was first seen in cholesterol derivatives, so it’s often called the cholesteric phase. Only chiral molecules can create such a phase. In this phase, the molecules twist in a direction perpendicular to the director, which results in a longer-range chiral order.
In the smectic C* phase, the molecules are ordered in layers and are tilted at a certain angle. This tilt creates a spiral twist of the molecular axis, so they are also known as twisted nematics.
Chiral liquid-crystal molecules usually create chiral mesophases, meaning the molecule must have some form of asymmetry. But the system can’t be racemic, meaning it can’t be a mix of right- and left-handed molecules, because that would cancel out the chiral effect. However, adding a small amount of chiral dopant to an achiral mesophase can make the system overall chiral.
Chiral phases usually have a helical twist of the molecules. If the twist is about the same size as the wavelength of visible light, it can create interesting optical interference effects. The twist in chiral LC phases also makes the system react differently to right- and left-handed circularly polarized light, meaning they can be used as polarization filters.
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KEY FEATURES Convenient, stand-alone bench-top operation Versatile – compatible with all standard...
DetailsKEY FEATURES High polarization purity Silent, vibration-free Low-voltage operation Broad thermal range...
DetailsFEATURES Broadband performance Extremely fast switching speeds Silent, vibration‐free Low‐voltage operation OEM...
DetailsFEATURES Broadband performance Extremely fast switching speeds Silent, vibration‐free Low‐voltage operation OEM...
DetailsFEATURES Broadband performance Extremely fast switching speeds Silent, vibration‐free Low‐voltage operation OEM...
DetailsKEY FEATURES High contrast No mechanical motion Computer control capacity No vibration
DetailsKEY FEATURES Sub-millisecond speeds Standard LC Drive Schemes Includes heated housing Precision...
DetailsKEY FEATURES Two channels of voltage and temperature sensing & control (TSC)...
DetailsKEY FEATURES Two channels of voltage and temperature sensing & control (TSC)...
DetailsKEY FEATURES Two channels of voltage and temperature sensing & control (TSC)...
DetailsKEY FEATURES High power capability High polarization purity Computer control capability 180...
DetailsKEY FEATURES High contrast ratio Computer control capabilities Continuous control of light...
DetailsKEY FEATURES Computer control capability Temperature control options Usable from 450 to...
DetailsKEY FEATURES Precision control at lower cost Scalable quantities (minimum order of...
DetailsKEY FEATURES Stand Alone LED Display 1 Channel Temperature Control
DetailsKEY FEATURES Phase of Amplitude modulation of UV spectrum Analog modulation Non-mechanical...
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