Figure 15
From: Strategies for Controlled Placement of Nanoscale Building Blocks
Visualization of the DNA–Au nanocomponent arrays. (A) Topographical AFM image of an assembled array providing a 3D visualization of the assembled DNA–Au nanocomponents, DNA marker rows, and DNA scaffolding. (B) TEM image of the nanocomponent array. The high-contrast particles in the image measure 6.2 ± 0.8 nm in diameter. (C) Schematic of DNA–Au nanocomponent arrays. DX tile color: blue, red, green, and yellow for DX tiles A, B, C, and D, respectively. DX tile B (red) contains an extended single-stranded DNA feature that hybridizes to complementary single-stranded DNA in the DNA–Au nanocomponent. DX tile D (yellow) includes extended structures composed of DNA hairpins above and below the crystal plane, which are used as topographical markers on the DNA crystal. (Reprinted with permission from Reference [173]. Copyright 2004 American Chemical Society.)