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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.


 


Select another article from this issue:
Managing the Open Plan Indoor Environment
Smart Fabrics for Today and Tomorrow
Odour Assessment for Indoor Environments
Green Cities and Managing Indoor Environment Quality

 

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