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Issue 6, 2020
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Liquid metal droplet solves maze

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A room temperature liquid metal features a melting point around room temperature. We use liquid metal gallium due to its non-toxicity. A physical maze is a connected set of Euclidean domains separated by impassable walls. We demonstrate that a maze filled with sodium hydroxide solution is solved by a gallium droplet when direct current is applied between start and destination loci. During the maze solving the droplet stays compact due to its large surface tension, navigates along lines of the highest electrical current density due its high electrical conductivity, and goes around corners of the maze's corridors due to its high conformability. The droplet maze solver has a long life-time due to the negligible vapour tension of liquid gallium and its corrosion resistance and its operation enables computational schemes based on liquid state devices.

Graphical abstract: Liquid metal droplet solves maze

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Article information

07 Sep 2019
24 Oct 2019
First published
25 Oct 2019

Soft Matter, 2020,16, 1455-1462
Article type

Liquid metal droplet solves maze

A. Adamatzky, A. Chiolerio and K. Szaciłowski, Soft Matter, 2020, 16, 1455
DOI: 10.1039/C9SM01806A

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