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How to Weave a Sensing and Color Changing Fabric

Pressing this fabric in one of the regions marked by the rectangles leads to the segment to change colors: from dark blue, to pink, to white. The parts on the left show how we combined our threads to electrical leads for testing using notched acrylic, copper tape, and alligator clips.

This is a first prototype of a vision of a force-fabric. When integrated into a garment, this textile could capture and replay how your body made contact with other bodies in the world. Those bodies may be human, created through the experiences of hugs or holding children, but they may also be of nonhuman forces – heavy winds or couches pressed upon ones back. The concept is to think of ways technology can make us aware of how we are physically supporting and supported by other objects and environmental forces. It sees garments as a interesting surfaces of intersection between self and other.

We created this first textile by double weaving sections of color changing yarn (resistive heating wire painted with a mixture of thermochromic pigments that change at different temperatures) on the front face and then integrating conductive pads on the back or under layer of the fabric. We used a tapestry technique to integrate a second piece of conductive yarn along a segment of the warp above the touchpad such that when it is pressed it completes the circuit. The double weaving structure makes the connective “guts” invisible from the front. Thus, the textile does not invite you to touch and poke it (how would you know where to touch), it simply captures a “picture” of the different press regions.

Laura Devendorf wove the fabric on an Schacht 8-shaft Baby Wolf loom, warped at 20 ends per inch (Photo by Glenn Asakawa/University of Colorado)