Surface Lattice Plasmon Resonances by Direct In Situ Substrate Growth of Gold Nanoparticles in Ordered Arrays

• DOI: 10.1002/adma.202205330
• Publication Date: 2022-07-29T06:27:40Z
• Authors: Gail A. Vinnacomb...; Ylli Conti; Steven J. Jonas; Paul S. Weiss; Agustín Mihi; Leonardo Scarabelli
• Keywords: Localized surface plasmon; Lattice (music)

Precise arrangements of plasmonic nanoparticles on substrates are important for designing optoelectronics, sensors and metamaterials with rational electronic, optical magnetic properties. Bottom-up synthesis offers unmatched control over morphology response individual building blocks. Usually, the incorporation made by bottom-up wet chemistry starts from batch colloids, which requires time-consuming hard-to-scale steps like ligand exchange self-assembly. Herein, an unconventional wet-chemical synthetic approach producing gold nanoparticle ordered arrays is developed. Water-processable hydroxypropyl cellulose stencils facilitate patterning a reductant chemical ink growth selectively occurs. Arrays exhibiting lattice plasmon resonances in visible region near infrared (quality factors >20) produced following rapid step (<10 min), all without cleanroom fabrication, specialized equipment, or self-assembly, constituting major forward establishing situ approaches. Further, technical capabilities this method through modulation particle size, shape, array spacings directly substrate demonstrated. Ultimately, fundamental understanding has potential to inform fabrication materials; opening door waveguides, lasing platforms, sensors.