Hierarchical Assembly of Plasmonic Nanoparticle Heterodimer Arrays with Tunable Sub-5 nm Nanogaps

Li, Jiajing; Deng, Tian-Song; Liu, Xiaoying; Dolan, James A.; Scherer, Norbert F.; Nealey, Paul F.

doi:10.1021/acs.nanolett.9b00792

Title: Hierarchical Assembly of Plasmonic Nanoparticle Heterodimer Arrays with Tunable Sub-5 nm Nanogaps

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Abstract

Nanoparticle assemblies have generated intense interest because of their novel optical, electronic, and magnetic properties that open up numerous opportunities in fundamental and applied nanophotonics, -electronics, and -magnetics. However, despite the great scientific and technological potential of these structures, it remains an outstanding challenge to reliably fabricate such assemblies with both nanometer-level structural control and precise spatial arrangements on a macroscopic scale. It is the combination of these two features that is key to realizing nanoparticle assemblies potential, particular for device applications. To address this challenge, we propose a hierarchical assembly approach consisting of both template-particle and particle-particle interactions, whereby the former ensures precise addressability of assemblies on a surface and the latter provides nanometer-level structural control. Template-particle interactions are harnessed via chemical-pattern-directed assembly, and the particle-particle interactions are controlled using DNA-directed self-assembly. To demonstrate the potential of this hierarchical assembly approach, we demonstrate the fabrication of a particularly fascinating assembly: the nanoparticle heterodimer, which possesses a surprisingly rich set of plasmonic properties and is a promising candidate to enable a variety of imaging and sensing applications. Each heterodimer is placed on the surface at predetermined locations, and the precise control of the nanogaps is confirmed by far-field scattering measurementsmore »« less

Authors:

Li, Jiajing ^[1]; Deng, Tian-Song ^[1]; Liu, Xiaoying ^[1]; Dolan, James A. ^[2]; Scherer, Norbert F. ^[1];

^[2]

Univ. of Chicago, IL (United States)
Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Lemont, IL (United States)

Publication Date:: Tue Jun 11 00:00:00 EDT 2019

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division; US Department of the Navy, Office of Naval Research (ONR); U.S. Department of Defense (DOD) - Vannevar Bush Faculty Fellowship

OSTI Identifier:: 1559290

Grant/Contract Number:: AC02-06CH11357

Resource Type:: Accepted Manuscript

Journal Name:: Nano Letters

Additional Journal Information:: Journal Volume: 19; Journal Issue: 7; Journal ID: ISSN 1530-6984

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 77 NANOSCIENCE AND NANOTECHNOLOGY; DNA; heterodimers; nanophotonics; hierarchical assembly

Citation Formats


                    Li, Jiajing, Deng, Tian-Song, Liu, Xiaoying, Dolan, James A., Scherer, Norbert F., and Nealey, Paul F. Hierarchical Assembly of Plasmonic Nanoparticle Heterodimer Arrays with Tunable Sub-5 nm Nanogaps.  United States: N. p., 2019. 
Web.  doi:10.1021/acs.nanolett.9b00792.

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                    Li, Jiajing, Deng, Tian-Song, Liu, Xiaoying, Dolan, James A., Scherer, Norbert F., & Nealey, Paul F. Hierarchical Assembly of Plasmonic Nanoparticle Heterodimer Arrays with Tunable Sub-5 nm Nanogaps.  United States.  https://doi.org/10.1021/acs.nanolett.9b00792

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                    Li, Jiajing, Deng, Tian-Song, Liu, Xiaoying, Dolan, James A., Scherer, Norbert F., and Nealey, Paul F. Tue .  
"Hierarchical Assembly of Plasmonic Nanoparticle Heterodimer Arrays with Tunable Sub-5 nm Nanogaps".  United States.  https://doi.org/10.1021/acs.nanolett.9b00792.  https://www.osti.gov/servlets/purl/1559290.

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@article{osti_1559290,

  title        = {Hierarchical Assembly of Plasmonic Nanoparticle Heterodimer Arrays with Tunable Sub-5 nm Nanogaps},

  author       = {Li, Jiajing and Deng, Tian-Song and Liu, Xiaoying and Dolan, James A. and Scherer, Norbert F. and Nealey, Paul F.},

  abstractNote = {Nanoparticle assemblies have generated intense interest because of their novel optical, electronic, and magnetic properties that open up numerous opportunities in fundamental and applied nanophotonics, -electronics, and -magnetics. However, despite the great scientific and technological potential of these structures, it remains an outstanding challenge to reliably fabricate such assemblies with both nanometer-level structural control and precise spatial arrangements on a macroscopic scale. It is the combination of these two features that is key to realizing nanoparticle assemblies potential, particular for device applications. To address this challenge, we propose a hierarchical assembly approach consisting of both template-particle and particle-particle interactions, whereby the former ensures precise addressability of assemblies on a surface and the latter provides nanometer-level structural control. Template-particle interactions are harnessed via chemical-pattern-directed assembly, and the particle-particle interactions are controlled using DNA-directed self-assembly. To demonstrate the potential of this hierarchical assembly approach, we demonstrate the fabrication of a particularly fascinating assembly: the nanoparticle heterodimer, which possesses a surprisingly rich set of plasmonic properties and is a promising candidate to enable a variety of imaging and sensing applications. Each heterodimer is placed on the surface at predetermined locations, and the precise control of the nanogaps is confirmed by far-field scattering measurements of individual dimers. We further demonstrate that the gap size can be effectively tuned by varying the DNA length. By correlating measured spectra with finite-difference time-domain (FDTD) simulations, we determine the gap sizes to be 4.2 and 5.0 nm-with subnm deviation-for the two DNA lengths investigated. This is one of the best gap uniformities ever demonstrated for surface-bound nanoparticle assemblies. The estimated surface-enhanced Raman scattering (SERS) enhancement factor of these heterodimers is on the order of 105-106 with high reproducibility and predictable polarization-dependence. This hierarchical fabrication technique-employing both template-particle and particle-particle interactions-constitutes a novel platform for the realization of functional nanoparticle assemblies on surfaces and thereby creates new opportunities to implement these structures in a variety of applications.},

  doi          = {10.1021/acs.nanolett.9b00792},

  journal      = {Nano Letters},

  number       = 7,

  volume       = 19,

  place        = {United States},

  year         = {Tue Jun 11 00:00:00 EDT 2019},

  month        = {Tue Jun 11 00:00:00 EDT 2019}

}

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https://doi.org/10.1021/acs.nanolett.9b00792

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