EQUIPMENT FOR THE PREPARATION OF POLAR AND HETEROGENEOUS LANGMUIR-BLODGETT-FILMS

Equipment for the preparation of noncentrosymmetric and alternate heterogeneous LB films was designed. It consists of two independent troughs. The system hardware offers experimental flexibility. One can obtain noncentrosymmetric films of both X- and Z-type in each of the troughs. The two troughs are independent and the subphases in the troughs may be different. A special mechanism is used to transfer the substrate from one trough to the other. This mechanism also divides each of the troughs into two sections with a single subphase. One of the sections has a pure water surface. It is used to prepare noncentrosymmetric LB films. The equipment is controlled by a microprocessor system. All processes of the structure preparation can be monitored by an IBM XT/AT computer using an RS-232 C interface.