Apparatuses and methods using nanostraws to deliver biologically relevant cargo into non-adherent cells

An apparatus for delivering a biologically relevant cargo into non-adherent cells, the apparatus comprising:

• a first flow path having an inlet port and an outlet port, wherein the first flow path is configured to receive a suspension of cells;
• a deflectable substrate along a lateral side of the first flow path;
• a plurality of nanostraws extending through the deflectable substrate and into the first flow path, wherein the plurality of nanostraws extend between 2 nm and 50 μm from the substrate, further wherein the plurality of nanostraws are hollow and have an inner diameter of between 5 nm-1500 nm;
• a reservoir in fluid communication with an inside of the plurality of nanostraws, the reservoir configured to hold the biologically relevant cargo;
• wherein the deflectable substrate is configured to deflect between a first position and a second position, further wherein the plurality of nanostraws extend further into the first flow path in the second position than in the first position to at least partially occlude the first flow path so that non-adherent cell in the flow path communicate with one or more of the plurality of nanostraws;
• and
• a pair of electrodes on opposite sides of the first flow path configured to apply an electrical field between the reservoir and the first flow path.