  Micro/nanoliter droplet is capable of achieving versatile applications with
tiny volume and substantial surface energy, which is a big plus over bulk
liquid. Yet, the contradiction of elaborate manipulation and enough power is
still a challenge. Here, we unleash the potential of our miniwatt aspirators
pumping up liquid and creating droplets with the help of acoustic vortex beams,
inspired by the power mechanism that spirals are significant for most mollusks
that live in water. These droplet aspirators produce very large interface
deformations by small radiation pressures with orbit angular momentum from
spiral-electrode transducers. The precisely contactless manipulation of
physical, chemical and biological objects at micrometric down to nanometric
scales, promises tremendous development in fields as diverse as microrobotics,
nanoreactors, or nanoassemblies.
