13-01-2022 дата публикации
Номер: US20220011212A1
Принадлежит:
Aspects of the invention include determining, by a first AFM tip, a first snap-off force of a solid surface immersed in a first fluid, determining, by a second AFM tip, a second snap-off force, determining, by a third AFM tip, a third snap-off force, determining, by the first AFM tip, a fourth snap-off force of a droplet of the first fluid immersed in the second fluid on the solid surface, determining, by the second AFM tip, a fifth snap-off force, determining, by the third AFM tip, a sixth snap-off force, determining a first capillary force for first AFM tip and first droplet based on first snap-off force and fourth snap-off force, determining a second capillary force for second AFM tip and first droplet and a third capillary force for third AFM tip and first droplet, and determining interfacial tension between first fluid and second fluid based on the capillary forces. 1. A computer-implemented method comprising:using a processor to control an atomic force microscope (AFM) to make determinations; a first AFM tip having a first radius;', 'a second AFM tip having a second radius; and', 'a third AFM tip having a third radius; and, 'wherein the AFM comprises determining, by the processor operating the first AFM tip, a first snap-off force of a solid surface immersed in a first fluid;', 'determining, by the processor operating the second AFM tip, a second snap-off force of the solid surface immersed in the first fluid;', 'determining, by the processor operating the third AFM tip, a third snap-off force of the solid surface immersed in the first fluid;', 'determining, by the processor operating the first AFM tip, a fourth snap-off force of a first droplet of the first fluid deposited on the solid surface, wherein the first droplet, the first AFM tip, and the solid surface are immersed in a second fluid;', 'determining, by the processor operating the second AFM tip, a fifth snap-off force of the first droplet of the first fluid deposited on the solid surface, wherein the ...
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