Large-Scale Soft-Lithographic Patterning of Plasmonic Nanoparticles
Year: 2021
Type: article
Abstract: Micro- and nanoscale patterned monolayers of plasmonic nanoparticles were fabricated by combining concepts from colloidal chemistry, self-assembly, and subtractive soft lithography. Leveraging chemical interactions between the capping ligands of pre-synthesized gold colloids and a polydimethylsiloxane stamp, we demonstrated patterning gold nanoparticles over centimeter-scale areas with a variety of micro- and nanoscale geometries, including islands, lines, and chiral structures ( e.g., square spirals). By successfully achieving nanoscale manipulation over a wide range of substrates and patterns, we established a powerful and straightforward strategy, nanoparticle chemical lift-off lithography (NP-CLL), for the economical and scalable fabrication of functional plasmonic materials with colloidal nanoparticles as building blocks, offering a transformative solution for designing next-generation plasmonic technologies.
Source: ACS Materials Letters
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Funders: Alex's Lemonade Stand Foundation for Childhood Cancer, “la Caixa” Foundation, Ministerio de Economía y Competitividad, National Institutes of Health, European Regional Development Fund, National Institute of Biomedical Imaging and Bioengineering, National Institute of Dental and Craniofacial Research, Division of Chemistry, National Center for Advancing Translational Sciences, Hyundai Hope On Wheels, H2020 European Research Council, H2020 Marie Skłodowska-Curie Actions
Awards: G2706289508, G343705321, Nanoscience-Inspired Acoustofluidic Assembly Lines for Gene and Cellular Therapies, G3854337573, Photonic Electrodes for Enhanced Light Management in Optoelectronic Devices, High-Precision Non-Contact Plasmon-Induced Intracellular Delivery, G595001555, G7823472656, Plasmon-resonance driven thermionic emitters for improved solar energy harvesting, Chemical Approach to Scalable Fabrication of Hybrid Plasmonic Materials in the Strong-Coupling Regime, UCLA Clinical and Translational Science Institute
OpenAlex ID: W3131482484