Liquid Crystal heating and cooling system

liquid crystal system

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Features and Benefits

This peltier controlled system provides a turnkey solution for liquid crystal research scientists looking for the unrivalled temperature stability and control within a smaller range than the Liquid Crystal Pro System. The system does not however require liquid nitrogen to cool and can reach temperatures as low as -40°C using circulated cooling water*.

Electrical connectors within the sample chamber of the LTSE120 enable the user to make electrical measurements on the sample while controlling the temperature inside a gas tight environment. The sample chamber can be further controlled in terms of humidity, slight vacuum or inert gas via the gas ports on the sides of the stage.

Liquid crystals can be loaded into a 5um gap capillary fill liquid crystal cell and studied at precisely controlled temperature while making electrical measurements or controlling electrical field across the sample.

The stage consists of a large area temperature controlled element with a platinum resistor sensor embedded close to the surface for accurate temperature measurements. The sample is simply mounted on a standard microscope slide in direct contact with the polished heating element and can be manipulated 15mm in X and Y direction.
To minimise the temperature gradient across the sample, the light aperture in the block is only 2.5mmØ.

Pol Table Clamp

There is also a clamp available so that the LTSE120 can be mounted to the polarizing table of the BX51 polarizing microscope. This clamp does not require any drilling of your microscope table as seen with other systems and is easily mounted with thumbscrews, you will still be able to use the rotation of the stage.(image shows LTS350)

Software

The intuitive Linksys temperature control software comes as part of the system and enables full PC programming of the temperature.

Turnkey Package

The system comes as a simple turn key solution easily operated with little or no experience with temperature controlled stages.

There are stage clamps available to attach the stage to the substage of the microscope.

*(requires circulating water at 5°C to reach -40°C . -25°C is possible when using ECP supplied with the system)

Specifications

• Temperature Range -40°C* to 120 °C
• Sample area of 40 mm x 40 mm
• 15mm by 15mm X, Y manipulation as standard
• Sample holder for standard 76 by 26mm microscope slides
• Liquid crystal cell carrier with electrical connections
• Gas tight chamber for atmospheric control
• Swing out lid for easy sample loading
• Can be used with transmitted or reflected light
• Mounts directly to microscope table or substage
• Stage body size - 160 x 80 x 24 mm
• 100 ohm platinum sensor
• Temperature stability & accuracy to 0.1°C
• Inner lid to increase temperature stability
• Highly conductive metal for improved heat transfer
• Maximum heating / cooling rate of 30°C/min
• Response time of <1 second at 5°C/min at 50°C
• Objective lens minimum working distance 6mm
• Condenser lens minimum working distance 13.2

Liquid Crystal System Includes:

LTSE 120 stage with electrical connections

LTS/LCC Liquid crystal cell carrier

5x LCC liquid crystal cells (5um gap, capillary fill)

PE94 temperature controller

Linksys temperature control software

ECP water circulator pump including tubes and valves

All necessary cables