hi, i have some questions about static charges and to see if anyone is able to help me with an experiment. i am pretty naive about this stuff, so please excuse my ignorance if i ask you any silly questions in response to suggestions. i want to create some sort of charge on a surface (about 1m x 2m approx) that will attract dust and similarly small particles in a normal environment. the thing about it is that it would need to be lasting - a static charge tends to be short lived when induced through friction etc. does anyone have any ideas what i could do/make/find/use to do this?? thanks.