The bond lengths of carbon and metal atoms induced by the adsorption of graphene on the (100) surface of Ni, Co and Cu.

r (Å)	C–Ni(100)	C–Co(100)	C–Cu(100)
r 1–1	3.001	3.164	3.278
r 2–2	2.130	2.129	2.843
r 3–3	1.970	1.966	2.321
r 4–4	1.998	1.997	2.321
r 5–5	1.998	1.997	2.843
r 6–6	1.970	1.966	3.278
r 7–7	2.130	2.129	—
r 8–8	3.001	3.164	—