can you sujest low resistance around 10^-9?
Very tough. A sheet of copper 3 cm square and 1 mm thick will have a resistance close to 10^–9 Ω between its two flat faces ( that is , with the connectors separated by 1 mm of copper. ) . But that is the problem the connectors will have much more resistance and totally swamp the tiny resistance of the Cu sheet. What on earth do you what it for ?
