Macroscopic 10-Terabit–per–Square-Inch Arrays from Block Copolymers with Lateral Order
By Soojin Park, D. Lee, Ji Xu, Bokyung Kim, S. Hong, Unyong Jeong, Ting Xu, T. P. Russell. Science, 2009
701 citations recorded by the source corpus.
Generating laterally ordered, ultradense, macroscopic arrays of nanoscopic elements will revolutionize the microelectronic and storage industries. We used faceted surfaces of commercially available sapphire wafers to guide the self-assembly of block copolymer microdomains into oriented arrays with quasi–long-range crystalline order over arbitrarily large wafer surfaces. Ordered arrays of cylindrical microdomains 3 nanometers in diameter, with areal densities in excess of 10 terabits per square inch, were produced. The sawtoothed substrate topography provides directional guidance to the self-assembly of the block copolymer, which is tolerant of surface defects, such as dislocations. The lateral ordering and lattice orientation of the single-grain arrays of microdomains are maintained over the entire surface. The approach described is parallel, applicable to different substrates and block copolymers, and opens a versatile route toward ultrahigh-density systems.
Subfields: Materials Chemistry, Surfaces, Coatings and Films
View Paper: https://www.semanticscholar.org/paper/326b24de5938266960f9f7fda2a240d120a2661f
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In Materials Chemistry
In Surfaces, Coatings and Films
Citations in the corpus
- Bit-Patterned Magnetic Recording: Theory, Media Fabrication, and Recording Performance (2015, methodology): “First, using a higher χ BCP material, it is possible to achieve a full pitch even below 10 nm [57], [58].”
- Block Copolymer Nanostructures for Technology (2010, methodology): “used a textured sapphire surface in combination with solvent annealing to generate perfect ordering of PS-b-PEO over an area of 4 cm 2 [46].”