METHOD AND APPARATUS FOR DETERMINING COVERAGE OF INTERFACE BETWEEN FIRST LIQUID PHASE AND SECOND LIQUID OR GASEOUS PHASE BY AT LEAST ONE MOLECULAR SPECIES

摘要

PROBLEM TO BE SOLVED: To observe dynamic interface development by generating droplet flow containing a first liquid phase, moving the droplets in a specified track, and measuring the coverage of the interface coated with at least one of molecular species at a plurality of points in the track in non-contact manner. ;SOLUTION: A dropletor 1 generates and releases uniform droplets 2 at regular intervals. The liquid drops 2 move along a droplet trajectory shown by an arrow 3. A laser 4 radiates laser beam to the droplets in the track through a semisilvered mirror 5 and a lens 6. The light rays reflected by the droplets 2, especially the surface of the molecules, enter a detector 7 through the lens 6 and the semi-transparent mirror 5. The detector 7 enables the droplets to move in the track in the direction shown by an arrow 8 to observe the droplets 2 having the coverage in different generation steps. The detection signals are analyzed by an analysis unit. By this method, the interfacial adsorption of a substance can quickly and continuously be measured in non-contact manner.;COPYRIGHT: (C)1999,JPO