Controlling the Orientation of Cylinder Forming Block Copolymers - PowerPoint PPT Presentation

Controlling the Orientation of Cylinder Forming Block Copolymers David Statti, Matthew Hammond (Mentor), Professor Edward J. Kramer Department of Materials, UCSB Funded by the National Science Foundation, Department of Materials Research

Cylinder Forming Block Copolymers AAAAAAAA-BBBB PS PVP Polystyrene (A) Poly(2Vinylpyridine) (B) 63 monomers 185 monomers • Cylinders (PVP), surrounded by PS.

Island and Hole Formation Silicon Substrate

Cross Section of Patterned Silicon Substrate Layer of Copolymer SiO2 Mesa Mesa Mesa Mesa Mesa Well Well Well Silicon Substrate

Atomic force Microscopy (AFM) Detector Laser Cantilever Silicon substrate • Cantilever taps on sample surface. • Laser deflects off cantilever and into detector, measuring changes in amplitude. •Computer translates into topographical image.

8 minutes 195 minutes 1 2 3 4 5 6 7 8 21 hours 67.5 hours

Cylinder Forming Block Copolymer MH10 Polymer (Hole Area) 1 2 12 1 10 3 A re a (m ic ro n s ^ 2 ) 2 8 3 6 4 4 5 4 5 2 6 6 7 0 7 8 0 1000 2000 3000 4000 5000 -2 8 Time (minutes)

Cylinders Aligning in Well mesa well mesa µ m