ATU Discovers New Method for Printing on Flexible Textiles

Researchers at the Atlantic Technological University (ATU) in Ireland have recently developed a new 3D printing method that could impact the future of wearable technology. Dr. Aswathy Babu, the head of the team, alongside Professor Suresh C. Pillai, has created a way to directly 3D print functional polymers onto flexible textiles. This makes it possible to produce clothing that can generate and store its own energy, paving the way for self-powered electronics.

Their work was published in the Nano Energy journal, with a primary focus on the fabrication of textile-based triboelectric nanogenerators (T-TENGs). This new device converts mechanical motion, such as walking or stretching the fabric, into usable electricity. The researchers used a low-cost fused filament fabrication (FFF) printing process that deposited polypropylene, a triboactive thermoplastic, directly onto the conductive fabric. The result is a durable, patterned surface that bonds tightly to the textile and delivers a significantly higher energy output compared to other traditional manufacturing techniques.

One of the main challenges that come with wearable energy systems is the fact that there is often a weak bond between polymers and fabrics. Previous methods have often required adhesives or multi-step processes that reduced the durability and flexibility of the garment. The team at ATU’s approach eliminates these issues by producing washable and stretchable energy harvesters that can handle daily wear and tear. According to the team, this strong interfacial bonding is critical for maximizing the energy efficiency and usability of the tech.