The invention provides an integrated single-
fiber droplet
manipulator. The integrated single-
fiber droplet
manipulator is characterized in that the device is composed of a section of multi-
core optical fiber comprising a cladding and a
fiber core, the fiber end is ground to form a cone
frustum fiber end, the end face of the cone
frustum fiber end is provided with a layer of
liquid injection smoothporous
surface film doped with a photosensitive material, and the film is provided with an array groove structure filled with a lubricating agent; when light
waves transmitted by the fiber core are reflected by the cone
frustum fiber end and then gathered to the
liquid injection smooth porous
surface film on the end face, the light
waves are absorbed and converted into
heat energy by the photosensitive material, a
temperature gradient field is formed in an
irradiation area, droplets attached to the
liquid injection smooth porous
surface film generate
wetting gradient force under the influenceof the
temperature gradient field, the droplets are affected by force, the posture of the droplets changes to generatesdirectional sliding, and finally, the droplets are controlled under the action of different
temperature gradient fields by controlling the power of the light injected into the fiber core. The
manipulator can be applied to the fields of hydromechanics,
biology,
medicine and the like.