Knit it, braid it, turn it on and use it: New technology from old-school methods

October 9, 2015, ARC Centre of Excellence for Electromaterials Science
Dr. Javad Foroughi holds a spool of polyester fibres which could be used with carbon nanotubes, graphene and conducting polymers to develop smart textiles. Credit: University of Wollongong

The ability to arrange different types of fibres with predetermined spatial organisation gives us the colour, vibrancy and comfort we encounter in traditional textiles.

Replace conventional fibres with those that can conduct electricity and we introduce new dimensions. We introduce the ability to monitor human movement using wearable garments, and even to store the energy required to power such a function. ARC Centre of Excellence for Electromaterials Science (ACES) researchers have created new fibre structures and used traditional knitting and braiding techniques to introduce both of these capabilities to wearable structures.

A knitted textile based on the polymeric composite fibres, produced at the Australian National Fabrication Facility, is highly sensitive, stable and able to detect a wide range of .

The team demonstrated a working device with remote sensing capabilities using a knee sleeve prototype of the fabric that 'talks' to a commercial wireless receiver.These fibres are not only stretchable but also conduct electricity. This combination of properties allows the fibres to respond to body movement.

For energy storage the materials that make up a battery have been braided into appropriate arrangements to deliver energy storage capabilities.

ACES Director Gordon Wallace said an interdisciplinary approach to the research was crucial to the team's success.

"These advances are made possible by the combination of skills that ARC Centres of Excellence bring together to tackle challenging areas," he said.

Researchers at the ARC Centre of Excellence for Electromaterials Science have created stretchable and electrically conductive fibres that can be braided and knitted using traditional techniques to create wearable garments that monitor human movement. Credit: University of Wollongong

"We are able to take fundamental advances in materials science and engineering and to realise wearable structures for use in sports training and rehabilitation applications."

Papers detailing the work, "Knitted Strain Sensor Textiles of Highly Conductive All Polymeric Fibers," was recently published in Applied Materials and Interfaces and "3-D Braided Yarns to Create Electrochemical Cells" has been accepted for publication in Electrochemistry Communications.

Explore further: Graphene holds key to unlocking creation of wearable electronic devices

More information: Shayan Seyedin et al. Knitted Strain Sensor Textiles of Highly Conductive All-Polymeric Fibers, ACS Applied Materials & Interfaces (2015). DOI: 10.1021/acsami.5b04892

Chen Zhao et al. 3D Braided Yarns to Create Electrochemical Cells, Electrochemistry Communications (2015). DOI: 10.1016/j.elecom.2015.09.021

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