Abstract: Disclosed are devices, systems and methods for in situ payload delivery via a degradable microneedle. In some aspects, a microneedle therapeutic payload delivery device includes a substrate; an activation particle; and one or more degradable microneedle structures coupled to the substrate and including a polymeric matrix structured to embed the activation microparticle and one or more therapeutic payloads, the one or more degradable microneedle structures each including an exterior wall spanning outward from a base surface and forming an apex at a terminus point of the exterior wall, wherein the polymeric matrix of a microneedle structure of the one or more degradable microneedle structures is degradable under an environmental parameter of a biofluid surrounding the microneedle structure to dissolve and allow the one or more therapeutic payloads and the activation particle to the surrounding biofluid.

Abstract: Methods, systems, and devices are disclosed for intracellular payload delivery by nanomotor structures. In some aspects, a nanomotor for intracellular payload delivery includes an asymmetric body having a concave cavity at one end of the nanowire body; a functionalization layer on an outer surface of the nanowire body; and a payload substance coupled to the nanomotor by the functionalization layer in a biologically active conformation, wherein the payload substance is attached to a portion of the functionalization layer or at least partially encapsulated within the functionalization layer, in which the nanomotor is operable to propel in a biological medium and into an intracellular region of a living cell to initiate an interaction of the biologically active payload substance with an intracellular constituent of the living cell.

Abstract: Methods, systems, and devices are disclosed for intracellular payload delivery by nanomotor structures. In some aspects, a nanomotor for intracellular payload delivery includes an asymmetric body having a concave cavity at one end of the nanowire body; a functionalization layer on an outer surface of the nanowire body; and a payload substance coupled to the nanomotor by the functionalization layer in a biologically active conformation, wherein the payload substance is attached to a portion of the functionalization layer or at least partially encapsulated within the functionalization layer, in which the nanomotor is operable to propel in a biological medium and into an intracellular region of a living cell to initiate an interaction of the biologically active payload substance with an intracellular constituent of the living cell.