Directed Self-Assembly of Block Copolymer for Bit Patterned Media with Areal Density of 1.5 Teradot/Inch² and Beyond

Table 1

Cylinder-forming PS-b-PMMA BCP materials.

Density (Td/in^2)	𝐿𝑜 (nm)	𝑀𝑛 (kg/mol)	PDI
0.9	28.6	37.0-b-16.8	1.07
1.0	27.0	0.9 𝑇 : 1.3 𝑇 = 7 : 3 (wt./wt.)	mixed
1.3	24.0	28.6-b-12.2	1.07