The SFA 2000 combined with the FECO (Fringes of Equal Chromatic Order) multiple-beam interferometry technique measures forces (static- equilibrium or dynamic- non-equilibrium) between two surfaces in vapors or liquids with a sensitivity of a few nN and a distance resolution of 1Å (0.1 nm).
The figures show the SFA2000 (a) Basic Unit with optional attachments and (b) a schematic figure shows a section through the center of the apparatus. Four different distance control mechanisms are shown: coarse micrometer, medium micrometer, fine micrometer and extra-fine (piezoelectric tube) control.
The system utilizes a ‘universal disk mount’ for both the upper and lower disks. These new disks supports can accommodate both cylindrical disks and a new type of rectangular dove-tailed disk, shown here (schematic figure). The dove-tail disks can be mounted in the SFA 2000 with the main chamber filled with solution, making them ideal for the transfer of surfactant / lipid bilayer, polymer- or protein-coated surfaces into the apparatus without exposure to air.
Link to SFA 2000 Brochure (ENGLISH)
Link to SFA 2000 Brochure (MANDARIN)
Click here to see list of research references (PDF) (EXCEL)
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