A neural drug delivery system with fluidic threads implantable into tissue, including: a plurality of fluid delivery conduits configured to transport fluid and having an array of fluid delivery ports through which the fluid is selectively released a plurality of port gates each including a mesh structure coupled to a corresponding fluid delivery port and coated with an electroactive polymer a voltage source providing a conductive signal and an interconnect network that carries the conductive signal to the port gates. In response of the electroactive polymer to the conductive signal, each port gate is selectively operable between a closed mode that prevents transfer of fluid through its corresponding fluid delivery port to the tissue, and an open mode that allows transfer of the fluid through its corresponding fluid delivery port to the tissue.
