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Hybrid Lithographic and DNA-Directed Assembly of a Configurable Plasmonic Metamaterial That Exhibits Electromagnetically Induced Transparency

Metamaterials are architectures that interact with light in novel ways by virtue of symmetry manipulation, and have opened a window into studying unprecedented light-matter interactions. However, they are commonly fabricated via lithographic methods, are usually static structures, and are limited in how they can react to external stimuli. Here we show that by combining lithographic techniques with DNA-based self-assembly methods, we can construct responsive plasmonic metamaterials that exhibit the plasmonic analog of an effect known as electromagnetically induced transparency (EIT), which can dramatically change their spectra upon motion of their constituent parts. Correlative scanning electron microscopy measurements, scattering dark-field microscopy, and computational simulations are performed on single assemblies to determine the relationship between their structures and spectral responses to a variety of external stimuli. The strength of the EIT-like effect in these assemblies can be tuned by precisel...

Authors:   David B. Litt; Matthew R. Jones; Mario Hentschel; Ying Wang; Sui Yang; Hyun Dong Ha; Xiang Zhang; A. Paul Alivisatos
Journal:   Nano Letters
Year:   2018
DOI:   10.1021/acs.nanolett.7b04116
Publication date:   11-Jan-2018
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  • scanning electron m…
  • DNA
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