Device-quality, reconfigurable metamaterials from shape-directed nanocrystal assembly
[1];
[2];
[3];
[1];
[1];
[2];
[4]
- International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208,, Department of Chemistry, Northwestern University, Evanston, IL 60208,
- International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208,, Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL 60208,
- International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208,, Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
- International Institute for Nanotechnology, Northwestern University, Evanston, IL 60208,, Department of Chemistry, Northwestern University, Evanston, IL 60208,, Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208
Anchoring nanoscale building blocks, regardless of their shape, into specific arrangements on surfaces presents a significant challenge for the fabrication of next-generation chip-based nanophotonic devices. Current methods to prepare nanocrystal arrays lack the precision, generalizability, and postsynthetic robustness required for the fabrication of device-quality, nanocrystal-based metamaterials [Q. Y. Lin et al. Nano Lett. 15, 4699–4703 (2015); V. Flauraud et al., Nat. Nanotechnol. 12, 73–80 (2017)]. To address this challenge, we have developed a synthetic strategy to precisely arrange any anisotropic colloidal nanoparticle onto a substrate using a shallow-template-assisted, DNA-mediated assembly approach. We show that anisotropic nanoparticles of virtually any shape can be anchored onto surfaces in any desired arrangement, with precise positional and orientational control. Importantly, the technique allows nanoparticles to be patterned over a large surface area, with interparticle distances as small as 4 nm, providing the opportunity to exploit light–matter interactions in an unprecedented manner. As a proof-of-concept, we have synthesized a nanocrystal-based, dynamically tunable metasurface (an anomalous reflector), demonstrating the potential of this nanoparticle-based metamaterial synthesis platform.
- Research Organization:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); US Air Force Office of Scientific Research (AFOSR); US Department of the Navy, Office of Naval Research (ONR); National Institute of General Medical Sciences; National Science Foundation (NSF)
- Grant/Contract Number:
- SC0000989; FA9550-17-1-0348; N00014-15-1-0043; T32 GM008449; N00014-17-1-2425; NNCI-1542205
- OSTI ID:
- 1647871
- Alternate ID(s):
- OSTI ID: 1801366
- Journal Information:
- Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Vol. 117 Journal Issue: 35; ISSN 0027-8424
- Publisher:
- Proceedings of the National Academy of SciencesCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Monolayer Plasmonic Nanoframes as Large‐Area, Broadband Metasurface Absorbers
Low-Density 2D Superlattices Assembled via Directional DNA Bonding