Nanospray reactive sprayer

An apparatus for generating and collecting nanospray reactive droplets comprising:

• a capillary having a capillary inlet that receives a mixture of a protein and an enzyme and a capillary outlet to dispense the mixture;
• a counter electrode formed of an electrically conductive plate having an aperture therein wherein the capillary outlet is disposed in the aperture;
• a collection vessel formed of an electrically conductive material and having a concave surface configured to receive a nanospray plume emitted from the capillary outlet, wherein the capillary and the collection vessel are disposed on a nanospray path extending between the capillary outlet and the collection vessel;
• a plurality of electrostatic lenses disposed along the nanospray path, each electrostatic lens formed of an electrically conductive plate having an aperture therein, said aperture configured to pass the nanospray plume;
• and a voltage control module in electrical communication with and configured to independently control the voltage of the capillary, the counter electrode, the collection vessel and each of the electrostatic lenses.