Enhanced Tunability of Gold Nanoparticle Size, Spacing, and Shape for Large-Scale Plasmonic Arrays

Journal Article · 09 June 2019 · ACS Applied Nano Materials

DOI: https://doi.org/10.1021/acsanm.9b00815 · OSTI ID:1722964

Ray, Nathan J.  ^[1]; Yoo, Jae H.  ^[1]; McKeown, Joseph T. ^[1]; Elhadj, Selim ^[1]; Baxamusa, Salmaan H. ^[1]; Johnson, Michael A. ^[1]; Nguyen, Hoang T. ^[1]; Steele, William A. ^[1]; Chesser, John M. ^[1]; Matthews, Manyalibo J. ^[1]; Feigenbaum, Eyal  ^[1]

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1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Gold nanoparticles are important constituents in plasmonic arrays, lending themselves to electronic, optical, biomedical, sensing, and catalytic applications, among numerous others. Process variables that must be controlled when engineering plasmonic nanoparticle ensembles include nanoparticle size, shape, and spatial distribution on surfaces. The challenge in generating arrays of nanoparticles with control over these three parameters increases dramatically as spatial requirements for uniformity extend to larger processing areas. In this paper, we present a procedure that exploits thermally driven solid-state diffusional dewetting to yield considerable flexibility in generating ensembles of gold nanoparticles. Such submelting dewetting introduces fine control over particle spatial features that are currently difficult to achieve through conventional methods of generating nanoparticle arrays. Because of the simplicity of the process and its area-scalability, solid-state diffusional dewetting is shown here to be a method that could be easily scaled up to apply to large-area plasmonic fabrication processes.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC52-07NA27344
• OSTI ID: 1722964
• Report Number(s): LLNL-JRNL-771023; 962255
• Journal Information: ACS Applied Nano Materials, Journal Name: ACS Applied Nano Materials Journal Issue: 7 Vol. 2; ISSN 2574-0970
• Publisher: American Chemical Society (ACS)Copyright Statement
• Country of Publication: United States
• Language: English