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convergence of electronics with textiles offers variety of
applications in all scenarios. Electronic or smart textiles also
known as e-textiles assures to have a significant impact in areas
such as wearable computing, large-area electronics and fashion
textiles . Potential areas of application include health care,
sports, fashion industry . Here, the vision is of an e-textile
consisting of a fabric that maintain all the properties of textile
fibers, like comfort, washability, drapability ,softness or
stretchability and combines them with electronic functionality for
better results. The foregoing electronic functionality often refers
to different sensors like for temperature strain, posture, or other
physiological signals but also includes the associated conditioning
circuits, power supply, signal processing or transmission
electronics. To a certain extent, the span of e-textiles ranges from
conventional electronics attached to textiles to electronic
components build from active textile yarns. A measured approach for
fabrication of transistors on fabrics is the integration of flexible
electronics into a woven textile. Here, the use of flexible plastic
stripes as carriers for thin-film devices and standard silicon chips,
represents a good compromise between the electrical and mechanical
properties of the final textile device . Addition to that, the
integration of electronic fibers and conductive yarns in the weft and
warp direction of a woven fabric also enables the fabrication of more
complex systems inside a textile. We can also fabricate the
mechanically flexible active electronic devices directly on circular

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yarns usable for the fabrication of textiles exhibit diameters
significantly below 1 mm, which results in a highly curved surface.
These challenges can be addressed by new developments in the area of
flexible electronics. In particular the use of oxide semiconductors,
such as amorphous In-Ga-ZnO (IGZO) , promises to realize high
performance active electronic devices on a variety of substrates.
Here, we evaluated how IGZO thin-film transistors (TFTs),
representing the most important

basic building block of all electronic systems, can be fabricated on
a variety of different yarns. It is

that high performance TFTs, on glass fibers with a radius of 62.5 ?m
and on polymer fibers with

radius of 125 ?m, are fully functional and can be integrated into
textiles for wearable or industrial


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