Humidity boosts performance of 3D-printed nanogenerator instead of degrading it

Researchers developed a photocurable resin for LCD 3D printing that helps triboelectric nanogenerators keep working well in high humidity.

Using hydrophilic and zwitterionic chemistry, the material turns moisture from a weakness into a performance boost instead of a loss.

An amide-based polymer showed the best results, and a sulfobetaine methacrylate blend delivered higher current and voltage at up to 90% humidity.

The advance could make printable self-powered sensors more practical for wearables and implantable medical devices.