Programmable periodicity of quantum dot arrays with DNA origami nanotubes.
To fabricate quantum dot arrays with programmable periodicity, functionalized DNA origami nanotubes were developed. Selected DNA staple strands were biotin-labeled to form periodic binding sites for streptavidin-conjugated quantum dots. Successful formation of arrays with periods of 43 and 71 nm demonstrates precise, programmable, large-scale nanoparticle patterning; however, limitations in array periodicity were also observed. Statistical analysis of AFM images revealed evidence for steric hindrance or site bridging that limited the minimum array periodicity.
Bui
Hieu
H
Department of Electrical and Computer Engineering, Boise State University, Boise, Idaho 83725, USA.
Onodera
Craig
C
Kidwell
Carson
C
Tan
YerPeng
Y
Graugnard
Elton
E
Kuang
Wan
W
Lee
Jeunghoon
J
Knowlton
William B
WB
Yurke
Bernard
B
Hughes
William L
WL
D004247:DNA / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D043942:Nanotubes; D045663:Quantum Dots
D004247:DNA