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Fig. 1 | Nano Convergence

Fig. 1

From: Directed self-assembly of a two-state block copolymer system

Fig. 1

Scanning electron microscope (SEM) images of untemplated and templated block copolymer patterns. The HSQ templates were functionalized with the majority PS block. a Untemplated PDMS cylinders with L0 = ~ 36 nm. b One-state system with concentric rings inside circular confinement. Radius was 2.4L0. c One-state system inside hexagonal confinement. Apothem was 3.5L0. d One-state system inside pentagonal confinement. Apothem was 2.5L0. e Two-state system with degenerate ladder-shaped structures inside square confinement. Apothem was 2.4L0. f Three-state system inside triangular confinement. Apothem was 1.8L0. The radius and apothem were measured by subtracting brush thickness from confinement dimensions. Scale bars, 200 nm

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