Externally controlled intermittent randomization enables complex navigation of multiple nanobots

Rahul Goyal, Jyotiprakash Behera (), Pranay Mandal and Ambarish Ghosh ()
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Rahul Goyal: Max Planck Institute for Medical Research
Jyotiprakash Behera: Indian Institute of Science
Pranay Mandal: Indian Institute of Science
Ambarish Ghosh: Indian Institute of Science

Nature Communications, 2025, vol. 16, issue 1, 1-11

Abstract: Abstract Selective control of single untethered robots within a collection is trivial in macroscale robotics since it is possible to address and actuate individual entities using various communication schemes. This strategy does not work at reduced (sub-µm) length scales, where the global field cannot differentiate or control a single nanobot selectively from within a collection of indistinguishable objects. Here, we propose and demonstrate strategies where identical magnetic nanobots can be selectively and independently actuated using global control fields.

Date: 2025
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DOI: 10.1038/s41467-025-58092-y

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