Research scientists writing in Nature Communications have said that switching to graphene protective coating on disk drive patters and read/write heads opens the way to 4–10 Tb/in2 areal density HDDs using HAMR and HAMR+bit patterned media. Looking at the current 1 1Tb/in2 areal density used in 18TB, 9-platter drives with a 2TB/platter capacity, you could…