Langmuir-Blodgett double trough system

A Langmuir-Blodgett trough, comprising:

• a walled trough base, configured for holding a subphase liquid, the trough base comprising:
• a first side wall;
• a second side wall opposite to and parallel to the first side wall;
• a first transverse wall joined to the first side wall and to the second side wall;
• a second transverse wall opposing to and parallel to the first transverse wall and joined to the first side wall and to the second side wall;
• a middle barrier extending along a central axis thereof across the trough base from the first side wall to the second side wall and configured to contact a first material located on a surface of the subphase liquid on a first side of the middle barrier and to contact a second material located on the surface of the subphase liquid on a second side of the middle barrier, the middle barrier configured to prevent passage of the first material from the first side to the second side of the middle barrier and to prevent passage of the second material from the second side to the first side of the middle barrier;
• an adjustment apparatus which comprises:
• a first grooved edge joined to the first transverse wall and a second grooved edge joined to the second transverse wall, the first grooved edge and second grooved edges comprising respectively, a first groove and a second groove extending transversally and facing each other;
• a first side barrier and a second side barrier parallel to each other and extending between the first grooved edges, the first side barrier having a first tenon and a second tenon and the second side barrier having a third tenon and a fourth tenon, the first tenon being located at a first end of the first side barrier, the second tenon being located at a second end of the first side barrier, the third tenon being located at a first end of the second side barrier, the fourth tenon being located at a second end of the second side barrier, the first tenon and the third being configured to enter the first groove, and the second tenons and the fourth tenon being configured to enter the second groove, thereby restricting a motion of the first and second side barriers along an axis parallel to the first and second transverse walls;
• wherein:
• the middle barrier comprises a rotatable section configured to be rotated along a rotation axis parallel to the central axis, and a substrate holder joined to the rotatable section and configured to rotate with the rotatable section;
• the substrate holder is configured to hold a substrate, such that a rotation of the substrate holder is configured to dip the substrate into the subphase liquid via the first material and to cause the substrate to emerge from the subphase liquid via the second material, thereby enabling the substrate to be coated with the first material and the second material via a single rotational motion;
• the motion of the first and second side barriers is configured to adjust the surface areas of the first material and the second material floating on the subphase liquid, while enabling the subphase liquid to move under the first and second side barriers.