Applied Research and Product Development

 

 

 

We have developed bespoke tools for the fabrication and characterisation of liquid crystal cells and devices for research and development. Our standard, core modules can be customised further, depending on the requirements. We also offer a liquid crystal cell and device characterisation service in our lab for researchers in academia and industry.

The following short video presentation highlights our LC tools.

 

 

 

 

Optical Multi–parameter Analyser (OMPA)

 

 

 

 

 

Compact, all-in-one device measuring elastic and viscosity parameters of nematic liquid crystals (LCs)

Provides wide area optical quality and uniformity analysis of LC devices.

Using single optical assembly and one LC sample, it determines the following LC parameters:

•Splay and bend elastic constants (K1 and K3)
•Rotation viscosity (γ1)
•Combination of Leslie viscosity coefficients (α4+ α5)
•Wide area mapping of LC layer thickness and alignment

Sample holder with thermal control enables measuring LC properties in a wide temperature range.

Easy-to-operate graphical user interface controls the measuring apparatus and performs the data analysis.

Standard LC cells or unique already encapsulated LC hybrid samples can be characterised.

Operates with a fiber coupled laser so that a variety of laser wavelengths can be used – chosen depending on sample requirements.

Software and the associated code can also be ordered as a separate item. 

 

 

 

 

 

 

Microscope Hot stage with PC controlled temperature

We have developed a computer controlled microscope hot stage for liquid crystal research. The original software allows you to control the temperature of the samples with high accuracy. The hot stage has top and bottom dual pane windows for optical observation and imaging.

Technical specifications:
Temperature range: from room temperature to 250°C. Cooling below room temperature (down to -70°C) is possible for bespoke units;
Temperature Resolution: 0.01°C;
Temperature Stability: ±0.05°C at 100°C

 

 

 

 

 

 

 

Vacuum Filling Station

Vacuum chamber with integrated manipulators for filling of liquid crystal samples that require vacuum conditions; optional hot stage can be included.

 

 

 

 

 

Compact UV-VIS-NIR Lab spectrometer

Spectral Range: 380-950 nm or 200-790 nm
Resolution: ~1.0 nm (typically)
Focal Length: 75 mm
Aperture: f/5
Grating: 600 l/mm; 250, 300 or 400 nm Blaze Wavelength
Input: Direct or Fiber with SMA 905 Connector
Entrance slit: 10 µm
Detector: Linear CCD;
Pixels: 2048
Pixel Size: 14µm x 56µm
Antiblooming: yes
Acquisition Time: 1.5 ms – 10 sec
ADC: 12 bit, 400 ksps
CCD’s Dynamic Range: ~1000 (Max. Signal / Readout Noise)
CCD’s Dynamic Range: ~200 (Max. Signal / Signal Photon Noise)
Light Input Dynamic Range: ~1e6

Communications: USB 2.0 Compatible
Transfer Rate to PC: 500kB/s; ~9 ms for 2048 pixels CCD
Productivity: ~55 saved scans per sec
External Triggering: 2 SYNC_IN and 6 SYNC_OUT
Triggering Resolution: ~122 ns
Body: Black Anodyzed Aluminum

Software Specifications:
• Real-Time: Light Intensity, Transmittance, Absorbance
• Real-Time: AutoSave Spectra
• Tunable Period of Spectra Acquisition
• External Triggering: IN & OUT with Tunable Delay and Pulses Width