::: LT-310 :::
Experimental device for monomolecular film deposition
according to the Langmuir—Blodgett (LB) and similar techniques
for film deposition LT-310
units and accessories.
LangmuirBlodgett trough LT-310 is experimental research apparatus intended for deposition of mono- and multimolecular films according to the LangmuirBlodgett (LB) and similar techniques. It is also suitable for deposition of thin layers of various nature on solid substrates. Additional units and accessories enable the monomolecular layer deposition for versatile substrate types: a winding unit realizes deposition of LB layers onto flexible substrates (tape) and onto flat rigid substrates attached to the winded tape; rig for horizontal precipitation allows to deposit monomolecular layers onto submerged substrate according to Langmuir-Schaefer (horizontal precipitation, HP) technique by the liquid level lowering (draining).
LT-310 can be applied for
- application of monomolecular films
on solid samples according to the Langmuir-Blodgett (LB) technique or to the horizontal
precipitation (HP) technique
- deposition of multimolecular
films using corresponding layer-by-layer technique
- formation of mono- and multimolecular composite coatings on solid surfaces
- modification of the surface properties (hydrophilic behavior, optical,
electrical properties etc. )
- fundamental research in ultrathin film fabrication and their use
as insulating and protective coatings, molecular electronic elements, in biology
for creation of bilayer lipid membranes etc.
unit (Substrate clamping holder for fast fixing of flat sample on the dipper lever)
||ADDITIONAL ACCESSORIES (OPTIONAL)
||A peristaltic pump for continuous feeding of the deposited film on the aqueous surface. Ready to be installed directly in the trough side wall. (Includes the case with rotor, stepper motor, silicone hose diam 2/4 mm, clamping rings)
||A microdoser (syringe pump) for feeding the deposited film on the aqueous surface
||A mounted unit for the tape substrate winding in set with guides. Two motors drive to wind and rewind the tape.
||A rotating barrier for the monomolecular film transfer into working (deposition) area
||Rig for film application by the horizontal precipitation method
1 Basic set also includes control software (for Win32) and operation manual.
Safety guides for LT-310 trough (pdf, 620 kB)
Examples of LT-310 configurations
* Host PC is not included in the delivery set
Depending on the installed units and accessories, LT-310 apparatus may be configured in such variants (for example)
Conventional LB trough configuration includes horizontal barrier, surface tension sensor and dipper unit.
Configuration of the trough for horizontal precipitation includes horizontal barrier, surface tension sensor and specialized rig two Z-shaped PTFE bars with adjusting screw on one end. Draining hose(s) are employed in the technique. (Silicon wafer is shown as example of substrate placement).
Configuration of the trough for deposition on tape substrate includes horizontal barrier, surface tension sensor and specialized rig for tape winding. In this example, the trough also includes peristaltic pump for automatic feeding of the deposited monolayer. Alternativelly, a syring pump (microdozing unit) may be also involved to automate replenishment of active substance in the liquid interface or operator may do it manually.
The trough configuration for deposition on tape substrate with additional options. It includes specialized rig for tape winding, two surface tension sensors, rotating barrier for precise replenishment of deposited monolayer, and a peristaltic pump for automatic feeding of the active substance to preparatory area. Alternativelly, a syring pump (microdozing unit) may be used instead of peristaltic pump. Default horizontal barrier is not engaded.
Software for LB trough control and data acquisition is a Win32
application running under OS Windows 95/98/Me/NT/2000/XP/Vista.
The software is built according to the modular scheme oriented to perform specific
application technique and provides all preliminary settings and calibration necessary
for the LB trough operation as well control over the systems (mechanisms of the
barrier movement and sample dipping/lifting) at the film application.
Acquired data can be saved in special format or text files and can be then
processed, visualized and analysed in the program itself or with third party software
(e.g. SurfaceXplorer package or Microsoft
Minimal configuration of host PC (not included in the delivery
set): Celeron® 1.7 GHz, RAM 512
MB, HDD 160 GB, VRAM 64 MB, monitor 1024x768x32 bit, MS Windows®
XP SP2, 1 free USB port.