Multiphysics design and fabrication of 3D electroplated VIA materials topographies for next generation energy and sensor technologies
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Date
2022-07-30
Authors
Smallwood, Daniel C.
McCloskey, Paul
Rohan, James F.
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Published Version
Abstract
3D micro and nanoconductors have emerged as essential components of next generation energy and sensor technologies. This work investigates novel methods to tailor the topography of electroplated 3D conductive components, such as VIAs, using the FEM in COMSOL Multiphysics. This enables meeting the design specifications of flat, convex, or concave substrate-distal electroactive surfaces. Flat conductor surfaces are ideal for microbump soldering and flip-chip fabrication methods and concave/convex designs increase the number of available electrode reaction sites for sensor applications. 2D/3D multiphysics simulations are performed comprising: (1) electrochemistry modeling with the Nernst-Planck and Butler-Volmer formulations for mass transfer and reaction kinetics, and (2) a deformed geometry physics module to track the growing electrode during electrodeposition. Simulation results are compared to directly corresponding experimental work, with positive correlation. Our findings enable tailored and scalable electroactive surface processing options, which can be readily integrated into pre-existing research and industry standard operating procedures.
Description
Keywords
Multiphysics , Simulations , Modeling , Electroplating , Topography , Interconnect
Citation
Smallwood, D. C., McCloskey, P. and Rohan, J. F. (2022) 'Multiphysics design and fabrication of 3D electroplated VIA materials topographies for next generation energy and sensor technologies', Materials and Design, 221, 111001 (11 pp). doi: 10.1016/j.matdes.2022.111001