In contrast to traditional drug administration, targeted drug delivery can prolong, localize,\ntarget and have a protected drug interaction with the diseased tissue. Drug delivery carriers,\nsuch as polymeric micelles, liposomes, dendrimers, nanotubes, and so on, are hard to scale-up,\ncostly, and have short shelf life. Here we show the novel fabrication and characterization of\nphotopatternable magnetic hollow microrobots that can potentially be utilized in microfluidics and\ndrug delivery applications. These magnetic hollowbots can be fabricated using standard ultraviolet\n(UV) lithography with low cost and easily accessible equipment, which results in them being easy to\nscale up, and inexpensive to fabricate. Contact-free actuation of freestanding magnetic hollowbots\nwere demonstrated by using an applied 900 G external magnetic field to achieve the movement\ncontrol in an aqueous environment. According to the movement clip, the average speed of the\nmagnetic hollowbots was estimated to be 1.9 mm/s
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