Langmuir-Schaefer film (or LS film) can be defined as one or more monolayers of material deposited from a liquid surface onto a solid substrate. The deposition can be done by dipping the substrate horizontally through a floating monolayer at a constant molecular density or by placing the substrate in contact with the monolayer. LS deposition can be used for example to create nanoparticle coatings with controlled packing density.
Langmuir-Schaefer films formed of one or several Langmuir films deposited onto a solid surface by horizontally dipping (rather than vertically) the solid substrate from the gas phase toward the liquid phase or from the liquid phase through the gas phase. The films obtained can be highly organized ranging from ultrathin monolayer to multilayer structures built up of hundreds of monolayers.
The Langmuir-Schaefer technique is derived from the Langmuir-Blodgett technique, Langmuir-Schaefer films being very similar to Langmuir-Blodgett films.
Both of the methods can be used for creating highly organized nanoparticle coatings with controlled packing density and film thickness.