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Research Highlight

3D-Printed Carbon Microelectrodes

(a), (b) Designed structures of cone and sphere; (c), (d) 3D-printed cone and sphere; (e), (f) Pyrolyzed carbon cone and sphere

Scientific Achievement

Size and geometry customizable carbon microelectrode sensors were successfully fabricated and implanted into a rat brain to detect dopamine release in vivo.

Significance and Impact

The novel method allows batch-fabrication of  size and geometry customizable microsensors as implantable neurochemical devices.

Research Details

- Microstructures were 3D-printed by direct laser writing, and carbonized by rapid thermal processing.

- Surface and electrochemical characterizations proved high reproducibility and electroactive surface of the printed electrodes.

- 3D-printed electrodes were implanted into a rat brain and enable monitoring dopamine release in vivo.


C. Yang, Q. Cao, P. Puthongkham, S. T. Lee, M. Ganesana, N. V. Lavrik, and B. J. Venton, "3D-printed carbon electrodes for neurotransmitter detection," Angew.Chem. Int. Ed. 57, 14255–14259 (2018). DOI: 10.1002/anie.201809992