The invention discloses an atomic force
microscope colloid probe
surface modification method, and belongs to the technical field of atomic force
microscope probe modification. The invention provides ahigh-success-rate
colloid probe synthesis and
surface modification method, and the interaction force between
colloid and minerals can be measured more accurately. The method comprises the following steps: immersing colloidal microspheres in a FeOOH solution for a period of time, taking out the colloidal microspheres,
drying, putting the colloidal microspheres in a functional group modification solution for a certain period of time, and carrying out cold
drying; dipping a needle head of a 30G
injector in a minimum amount of
epoxy resin mixed liquid, transferring the
epoxy resin mixed liquid tothe front end of a
cantilever of the probe, sucking the modified colloidal microspheres by using a new needle head, transferring the colloidal microspheres to the
cantilever, and curing
epoxy resin to obtain the functional group modified colloidal probe. According to the invention, the yield of the colloid probe can be greatly improved, the
surface roughness of the functional group modified probeis reduced, and the experimental error is greatly reduced.