  We demonstrate injection, transport and detection of spins in spin valve
arrays patterned in both copper based chemical vapor deposition (Cu-CVD)
synthesized wafer scale single layer (SLG) and bilayer graphene (BLG). We
observe spin relaxation times comparable to those reported for exfoliated
graphene samples demonstrating that CVD specific structural differences such as
nano-ripples and grain boundaries do not limit spin transport in the present
samples. Our observations make Cu-CVD graphene a promising material of choice
for large scale spintronic applications.
