We demonstrate a system for performing logical operations (OR, AND, and NOT gates) at the air–water interface based on Marangoni optical trapping and repulsion between photothermal particles. We identify a critical separation distance at which the trapped particle assemblies become unstable, providing insight into the potential for scaling to larger arrays of logic elements.
N. Tanjeem, K. M. Kreienbrink and R. C. Hayward, Soft Matter, 2024, 20, 1689 DOI: 10.1039/D3SM01487H
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