The scientists printed one vessel with catalyst-laced 'ink', enabling the container walls to drive chemical reactions. Another container included built-in electrodes, made from skinny strips of polymer printed with a conductive carbon-based additive. The strips carried currents that stimulated an electrochemical reaction within the vessel. The system could allow scientists to test chemical processes in ways that were not economical before — producing just a few tablets of a particular drug, for example, for further tests or clinical trials.
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