@Jacob1

@batman333

Why not instead of focusing on gravity, look at electrostatic attraction? 

Here's why:

we already have electrons.

Most of the particles people want to have attraction between are things like dust and water that IRL are affected( like rubbing a plastic ruler on a jumper and using it to change the course of water trickling from a tap.)

Electrostatic forces (unlike gravity) do not have to be infinitessimitely small on the scale of tpt.

finally and I cannot stess this enough, VAN DE GRAAF GENERATORS.