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DOE OSTI · 1647871

Device-quality, reconfigurable metamaterials from shape-directed nanocrystal assembly

Zhou, Wenjie·Liu, Zizhuo·Huang, Ziyin·Lin, Haixin·Samanta, Devleena·Lin, Qing-Yuan·Aydin, Koray·Mirkin, Chad A.
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Abstract

Significance Colloidal nanocrystals with defined sizes and shapes are ideal building blocks for nanofabrication. However, the ability to arbitrarily arrange them on surfaces with control over their orientation remains elusive. Here we report a shallow-template-assisted DNA-mediated assembly strategy to precisely arrange colloidal nanocrystals on surfaces, with single-particle control across submillimeter areas. In addition, the oligonucleotide bonds between the nanocrystals and substrate can be reversibly expanded and contracted enabling postsynthetic tunability of the assembled structures. Using this approach, we synthesized a nanocrystal-based, dynamically tunable metasurface (an anomalous reflector), thereby illustrating the potential for unique device construction via DNA programmable assembly.

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59 BASIC BIOLOGICAL SCIENCESDNA-mediated assemblygold nanocrystalsmetamaterialsreconfigurablesurface patterning

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Zhou, Wenjie, Liu, Zizhuo, Huang, Ziyin, Lin, Haixin, Samanta, Devleena, Lin, Qing-Yuan, Aydin, Koray, Mirkin, Chad A.. 2020-08-17. Device-quality, reconfigurable metamaterials from shape-directed nanocrystal assembly. https://doi.org/10.1073/pnas.2006797117

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