Abstract: The embodiments disclose a method including patterning a template substrate to have different densities using hierarchical block copolymer density patterns in different zones including a first pattern and a second pattern, using a first directed self-assembly to pattern a first zone in the substrate using a first block copolymer material, and using a second directed self-assembly to pattern a second zone in the substrate using a second block copolymer material.
Type:
Application
Filed:
April 11, 2014
Publication date:
October 15, 2015
Applicant:
SEAGATE TECHNOLGOY LLC
Inventors:
XiaoMin Yang, Shuaigang Xiao, Kim Y. Lee, Koichi Wago, Philip Steiner