期刊
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
卷 117, 期 35, 页码 21052-21057出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.2006797117
关键词
gold nanocrystals; DNA-mediated assembly; surface patterning; reconfigurable metamaterials
资金
- Air Force Office of Scientific Research Award [FA9550-171-0348]
- Center for Bio-Inspired Energy Science, an Energy Frontier Research Center - US Department of Energy, Office of Science, Basic Energy Sciences Award [DE-SC0000989]
- Vannevar Bush Faculty Fellowship Program - Basic Research Office of the Assistant Secretary of Defense for Research and Engineering
- Office of Naval Research [N00014-15-1-0043]
- Northwestern University Graduate School Cluster in Biotechnology, Systems, and Synthetic Biology
- Biotechnology Training Program - National Institute of General Medical Sciences [T32 GM008449]
- Office of Naval Research Young Investigator Program Award [N00014-17-1-2425]
- Soft and Hybrid Nanotechnology Experimental Resource (NSF) [NNCI-1542205]
- International Institute for Nanotechnology (IIN)
- Keck Foundation
- State of Illinois, through the IIN
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据