I have two 4,000V, 2.5mA, DC power supplies and am attempting to use them in such a way to cause a 6x4x1-inch ABS plastic object to repel dust from the ambient air and prevent this dust from settling on the object.
I understand that two points that have opposite electrical charges will attract each other and that two points that have like electrical charges will repel each other. Using one or both of my power supplies and the plastic object described above, I am looking to somehow charge any potential dust particles that are in a small room and apply the opposite charge to the plastic object.
First Question: Assuming all potential dust particles in the small room can be charged and the plastic object can be given an opposite charge, it should repel the dust particles and prevent them from settling on it. Is this correct?
Second Question: How can I apply a charge to all potential dust particles in the small room?
Third Question: Is it possible to apply a charge to a plastic object of this size? Does the ABS plastic present too high resistance for an object this size?
Fourth Question: If the answer to the third question is yes, what ways can be used to enhance the conductivity of the plastic part. Perhaps a process such as dipping the plastic part in a liquid suspension of copper powder. Any other ideas?