======================ELECTRO_STATIC========================= molecular adhesion Surfaces stick when chemical bonds form. Surface charge imbalance comes When surfaces contact are separated, bonds rupture, asymmetrical bonds leave imbalanced charge fur on plastic helps to drag hair across the plastic surface. acts to increase the total contact area. Scotch(tm) tape CAN attain intimate contact over a DO exhibit strong charging when simply touched to another surface and pulled away. phenomenon called "contact charging" ======================ELECT_STATIC================================ TRIBOELECTRIC SERIES Air * Human Hands <---- Most Positive Asbestos Rabbit Fur Glass Mica Human Hair Nylon Wool Fur Lead Silk Aluminum Paper Cotton ZERO Steel Wood Amber Sealing Wax Hard Rubber Nickel, Copper Brass, Silver Gold, Platinum Sulfur Acetate, Rayon Polyester Styrene (Styrofoam) Orlon Saran Polyurethane Polyethylene Polypropylene Vinyl (PVC) Silicon Teflon <----- Most Negative