(Invited) Aerosol Jet and Laser Assisted Electrochemical Deposition for Advanced Metallization

Abstract

The inkjet printing technology for conductive patterns is commonly conducted with inks that are made of metal nanoparticles or based on metal-organic decomposition. An additional step of sintering, which is usually done in oven or on a hot plate, is required after inkjet printing to obtain metallic patterns with desired electrical conductivity [1]. Laser-induced selective metal deposition on metallic and non-metallic substrates has been the subject of much attention recently. An induced deposition rate several orders of magnitude greater than conventional rates is claimed to occur at points where a laser beam impinges the electrode surface [2].In this work, electrolytic and electroless deposition processes are combined with aerosol jet technology and laser assisted setups to induce local metallization on metallic and non-metallic substrates. Single metals and alloys deposition will be discussed according to compatibility with the substrates, selectivity and achievable feature size. Examples of microfabrication and selective decorative applications will be provided, together with an evaluation of the properties of the produced deposits. J-J. Chen, Fabrication of conductive copper patterns using reactive inkjet printing followed by two-step electroless plating, Applied Surface Science 396 (2017) 202–207.R. Khan, Laser-Induced Selective Deposition on Metal Using Electroless Gold, NASF SURFACE TECHNOLOGY WHITE PAPERS 84 (2019) 6-13.