Versatile in-situ method to prepare plasmonic nanoparticles arrays

Aug 18, 2022 (Nanowerk News) Plasmonic nanoparticles prepared by colloidal chemistry have advantageous electronic, optical and magnetic properties, but their implementation into functional devices remains limited by time-consuming and hard-to-scale steps like ligand exchange, purification and self-assembly. In this work, researchers from the Institute of Materials Science of Barcelona (ICMAB, CSIC) and the University of California, Los Angeles (UCLA), demonstrate the preparation of gold nanoparticle ordered arrays directly on substrates using an unconventional bottom-up wet-chemical synthetic approach. SEMs of plasmonic arrays grown in situ.of gold nanoparticles. (Image: ICMAB, CSIC) The researchers applied thermal nanoimprint lithography to fabricate ultra-thin (