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Issue 27, March 2009
Smart Fabrics for
Today and Tomorrow
by Maria C. Thiry - Originally published in
AATCC News, February 2009,
http://aatcc.informz.net/aatcc/archives/archive_229771.html; Reprinted with permission from AATCC,
www.aatcc.org,
copyright holder.
Despite
their sci-fi reputation, there are smart fabrics in common use
today. We talk about these everyday smart fabrics in the January
issue of AATCC Review. But what about the smart fabrics we're
developing for tomorrow? How will we be using smart fabrics in 10
years?
VERY CLEVER
The accepted definition of "smart" fabric is one that can respond,
independently and usefully, to environmental stimulus. A more
common definition is fabric that can do things that fabric isn't
ordinarily expected to do. Most development in smart fabrics, so far,
has focused on producing fabrics capable of health monitoring,
communication, protection, and even entertainment, as well as
developing the power systems to enable those functions.
Because of their development and production expense, most smart
fabrics occupy niche markets. However, the extensive development and
research being done today may make these smart fabrics extremely
valuable and ubiquitous in the niches they occupy both today and in
the coming decade. According to The
Electronics Industry Market Research and Knowledge Network, "The
global market for smart fabrics and interactive textiles is projected
to reach a value of US$1.31 billion by 2012."
MONITORING
US company Vivometrics markets the
LifeShirt, a
sensor-embedded garment that monitors a patient's vital life-sign
functions such as heart rate, respiratory rate, body position, activity
level, and skin temperature. The LifeShirt was originally developed for
researchers in the pharmaceutical industry to monitor patients
undergoing clinical trials, and in sleep studies. Its use has expanded
to keeping tabs on the health and safety of first responders, like
firefighters.
Swiss company CSEM, the Centre Suisse
d’Electronique et de Microtechnique SA, is working on
wearable wound sensors—biosensors integrated
into wound dressing materials to measure the healing process.
The
ConText consortium from The Netherlands has
developed a sensor/textile system to continuously monitor individuals
for
wearable medical testing such as
electromyography and electrocardiography. In addition, ConText has
developed a
wearable device for the sensing and prevention
of repetitive stress injuries.
Research from the Belgian
OSETH project focuses on optical fibers used
as wearable medical sensors "while being compatible with a textile
manufacturing process." Researchers seek to measure cardiac and
respiratory rates, pulse oxymetry, and other vital statistics. OSETH
says it expects to "achieve a breakthrough in healthcare monitoring
applications where standard (non-optical) monitoring techniques show
significant limits." Among anticipated applications is a system for
observing sedated or anesthetized patients under medical resonance
imaging (MRI) "where there is a need for safe, reliable, and fully
EMC-compliant monitoring system," says the project's site. Another goal
for the wearable healthcare system is as a safety net for infants at
risk of Sudden Infant Death Syndrome (SIDS).
The
European consortium working on the
Stella Project aims to develop fabrics for
applications in healthcare and wellness with electronics integrated in
stretchable parts and products for energy supply, sensors and actuators,
displays, and switches.
The
BioTex Consortium is developing fabric-based
biochemical-sensing systems to monitor body
fluids. This is a new focus, since other wearable medical-sensing
systems are typically designed to sense "physiological measurements
(body temperature, electro-cardiogram, electromyogram, breath rhythm,
etc.)"
COMMUNICATION
Wearable computers
are possible right
now, say Maggie Orth and E. Rehmi Post of the MIT Media Laboratory.
Their article presents examples of
interactive input devices
they call "washable computing" made from available fabrics and simple
electronic supplies that can be sewn up at home or by clothing
factories.
The
MP3-Blue
Rosner-Touch limited-edition jacket
is available online only from FIS Fashion Innovation Service GmbH,
Germany. The jacket features an on-sleeve fabric controller and special
inside pockets for cellphone and MP3 player, plus built-in earphones and
speaker.
Fabric-based electronic touchpads, available from UK companies
Fibretronic
and
Eleksen,
among others, are durable, flexible, washable, and lightweight. They
span the gulf between electronics and fabric, allowing interactive
clothing, fabric keyboards, and other
innovations.
PROTECTION
The goal of the
ProeTEX
project is to improve the safety and efficiency of emergency workers
through smart fabrics that monitor their health, activity, position, and
environment. The group says these smart fabrics will create "a wearable
interface for monitoring the operator‘s health status and surrounding
environment potential risk sources, giving him/her useful real time
information and/or alarms, as well as allowing data transmission between
the operator and the central unit." The system is designed to identify
unconscious, injured, or physiologically stressed emergency workers and
transmit data on the individual's health and physical stress level to a
central command post. In addition, the project's stated goal includes
providing "active measures to combine with the passive capabilities of
the protective clothing" to prevent injury from burns, flash-over,
hyperthermia, explosion, acids and corrosive substances, electrocution,
etc.
ENTERTAINMENT
Enlighted Designs,
a US company, believes that a legitimate use of smart textiles is for
fun! The company offers consumers a full line of clothing that lights
up. Entertainers and promotional companies are frequent customers.
Ermenegildo Zegna Group,
Italy, offers consumers a "Freeway Jacket" with an integrated LED
light safety system, from German company
Interactive Wear,
for improved visibility when traveling at night in an urban setting.
Canterbury
of New Zealand
produces
IonX—Ionised
Energy Fabric that delivers ionic energy to the body through a
negatively-charged electromagnetic field. Canterbury offers the fabric
in a collection of sports performance and compression garments.
Italian
company
Luminex
has developed fabric that literally emits light—not from added
electronics, but from the yarns themselves. Possible applications range
from night club clothing to safety wear for maintenance and construction
workers to enhanced visibility of signs.
SymbioticA: the Art and Science Collaborative Research Laboratory,
School of Anatomy and Human Biology at the University of Western
Australia and Verigen, a Perth, Australian-based company specializing in
tissue-engineered cartilage for clinical applications has developed
"Victimless
Leather."
The team has grown living tissue, in the laboratory, to produce a
leather-like material in the shape of a coat, without stitches, dyes,
tanning, or even actual animal hide. At present, the project is
considered more of a thought experiment, described by researchers as
"providing [a] tangible example of possible futures," in which "an
actualized possibility of wearing ‘leather' without killing an animal is
offered as a starting point for cultural discussion."
POWER
Harnessing
the human body's ability to produce energy, Canadian company
XS Labs
is tackling the power-generation demands of smart fabrics through
Captain
Electric and Battery Boy.
They are designing fabrics and garments "that directly address issues of
power consumption and sustainability," according to XS Labs. The project
is investigating three different modes of power generation: sticky—a
garment deliberately designed to make physical movement a little more
difficult, and so extract energy from the body's extra effort; itchy—a
garment designed to create and harvest the potential of static
electricity, including "a combination of static-generating fabrics and
materials that accumulate electrical charges through friction, and
piezo-fabric, woven piezo threads that can generate power through
mechanical transformation;" stiff—a garment intended to capture the
energy of human muscles overcoming gravity through deliberately
increasing the weight of the fabric.
In contrast, US company
Konarka
harvests the power of the sun. The thin, lightweight, and very
flexible material efficiently collects solar energy to power any
electronic devices connected to smart fabrics.
Smart fabrics are here to stay, that much is certain. What form they'll
take by the end of the decade, however, is the stuff of science fiction.
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