Jackets with built-in mobile phones, sports clothes that warn you when your heart rate gets too high, wallpaper with glowing patterns—these are not concepts from a science fiction movie, some of them are actually already available, and they may soon become commonplace.
These applications require electrically conductive fibrous materials. Korean researchers have now developed a new process for rendering paper and textile fibers conductive with aluminum. Their report appears in the journal Angewandte Chemie.
Conventional silicon-based electronics are actually not very well-suited to wearable devices because they are brittle, cannot be bent or folded, and must not fall onto a hard surface. This makes “wearable” electronics unthinkable. But they would not just offer opportunities for fun and games, they could also be useful in many areas. They would allow the bodily functions of at-risk or chronically ill patients to be monitored without requiring them to walk around with cables attached to them.
A baby’s sleepwear could sound an alarm if its breathing stops. “Intelligent” protective clothing could constantly indicate the position of field personnel by radio. Textile and paper electronics would also be ideal for novel large-scale interior design elements and security features in buildings.
These types of applications all require a flexible but conductive material that can be applied to a flexible substrate in the form of electronic circuits. Current techniques like printing or vapor deposition are not applicable to fibrous materials because it is not possible to produce a continuous pattern. In addition, these methods are very expensive.
Researchers led by Hye Moon Lee at the Korea Institute of Materials Science and Seung Hwan Ko at the Korea Advanced Institute of Science and Technology have now developed a simple, affordable approach for making conductive textile and paper fibers with aluminum. The paper or textile fibers are first pre-treated with a titanium-based catalyst and then dipped into a solution of an aluminum hydride composite solution. The catalyst is needed to allow the subsequent conversion of the aluminum compound to metallic aluminum to occur at room temperature.
The materials are not simply coated; in fact their fibers absorb the solution. This means that they do not have just a surface layer of aluminum, but are fully saturated. This produces papers and textile fibers with excellent electrical conductivity that can be bent and folded as desired. They can also be cut to any desired shape and size and simply glued or sewn onto an equally flexible support.About the Author
Author: Hye Moon Lee, Korea Institute of Materials Science, Changwon (Rep. Korea), mailto:firstname.lastname@example.org
Title: Highly Conductive Aluminum Textile and Paper for Flexible and Wearable Electronics
Angewandte Chemie International Edition, Permalink to the article: http://dx.doi.org/10.1002/anie.201301941
Hye Moon Lee | Wiley-VCH
Graphene origami as a mechanically tunable plasmonic structure for infrared detection
25.04.2018 | University of Illinois College of Engineering
Scientists create innovative new 'green' concrete using graphene
24.04.2018 | University of Exeter
Magnetic resonance imaging, or MRI, is a widely used medical tool for taking pictures of the insides of our body. One way to make MRI scans easier to read is...
At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.
Powder-based additive manufacturing in zero gravity is the name of the project in which a component is produced by applying metallic powder layers and then...
Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.
Molecules are the building blocks of life. Like all other organisms, we are made of them. They control our biorhythm, and they can also reflect our state of...
University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
Repairing major load-bearing bones such as those in the leg can be a long and uncomfortable process.
Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
13.04.2018 | Event News
12.04.2018 | Event News
09.04.2018 | Event News
26.04.2018 | Power and Electrical Engineering
26.04.2018 | Life Sciences
26.04.2018 | Power and Electrical Engineering