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New sound-based 3D-printing method enables finer, faster microdevices

New sound-based 3D-printing method enables finer, faster microdevices
PSP concept and 3D printed objects. Credit: Microsystems & Nanoengineering (2026). DOI: 10.1038/s41378-025-01035-w

Concordia researchers have developed a new 3D-printing technique that uses sound waves to directly print tiny structures onto soft polymers like silicone with far greater precision than before. The approach, called proximal sound printing, opens new possibilities for manufacturing microscale devices used in health care, environmental monitoring and advanced sensors. It is described in the journal Microsystems & Nanoengineering.

The technique relies on focused ultrasound to trigger chemical reactions that solidify liquid polymers exactly where printing is needed...

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