A soldier at the battle
field, a fire fighter or police officer, who is wounded and unconscious, cannot
request help to a command post. A patient whose health is very critical cannot
inform his condition to the doctors. But the clothes they are wearing can solve
this problem by detecting blood.
Nanotechnology offers viable
solutions for various industrial needs. Advancements in this field have the
possibilities for a gamut of new applications in textiles. Researchers from the
University of Michigan have come up with a new process of manufacturing a
smart yarn with the ability to conduct electricity. These yarns can be
effectively woven into soft fabrics and tailored into apparels. These garments
will be capable to detect blood, and monitor health.
Nanotube infused cotton yarns:
Presently, smart fabrics are
manufactured from metallic or optical fibres. They wear away quickly, and are
brittle and uncomfortable. Laundry of such textiles also proves to be
troublesome. Nano technology has come up with an innovative way of combining
the two fibres; one natural and the other nano technology. Cotton yarn with a
thickness of 1.5 millimeters is dipped a few times in a solution of a special
sticky polymer in ethanol and dried. This enables the yarn to conduct power
from a battery to illuminate light emitting diode device.
The antibody anti-albumin is
added to the carbon nanotube solution. Anti-albumin reacts with albumin, a
protein that is found in blood. When the anti-albumin infused yarns were
exposed to albumin, the conductivity is increased considerably. This method is
more sensitive, simple and durable. By repeating the process a few times,
normal cotton becomes a conductive material due to the carbon nano tubes which
are conductive in nature. After the process is complete, the cotton yarn still
retains its soft and supple features. This yarn is much better comparatively
over the current designs available for electrically conducting fabrics. The
only change in the yarn is that it turns into black color due to the presence
of carbon.
Potential Applications:

Fabrics made from these smart
yarns have potential application in professions that involve high risk. A
police officer in danger, a firefighter who is hurt while at work, a wounded
soldier at the warfront may not be in a position to send a message requesting
for help. But the apparels infused with smart yarns would be able to do it. The
clothes can be designed accordingly; to store energy, which will provide power
to operate small electronic devices. A mobile phone or any other form of
communication device attached with the clothing can transmit the information
from the garment to a command post. It can also be used in garments and used
for monitoring health. It also foresees lucrative applications as performance
apparel.
The concept of electrically
sensitive clothing made from nanotube infused cotton yarn can be adapted in
various fields based on their exposure to potential risks. The burgeoning
interest in nano technology opens a floodgate of opportunities for developing
new and innovative products in the textile sector.
References:
- http://www.ns.umich.edu
- http://telemedicinenews.blogspot.com
- http://www.news-medical.net/
- http://www.scientificblogging.com