Focused ion beam milling of self-assembled magnetic superstructures: An approach to fabricate nanoporous materials with tunable porosity

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Abstract

Fabricating nanoporous materials with tunable pore sizes while keeping the freedom of materials choice, is an active area of research because of its practical relevance in a wide range of applications. Here, we demonstrate a novel approach for the first time based on focused ion beam milling of self-assembled superstructures made from nanoparticles. The interaction of the ion beam at different voltages with the self-assembled superstructures, leads to nanoporous materials with the possibility to tune the porosity. The porosity in the superstructures evolves as constituent nanoparticles merge together as a results of combined milling and melting.

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Håkonsen, V., Singh, G., He, J., & Zhang, Z. (2018). Focused ion beam milling of self-assembled magnetic superstructures: An approach to fabricate nanoporous materials with tunable porosity. Materials Horizons, 5(6), 1211–1218. https://doi.org/10.1039/c8mh01112e

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