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Researchers developed a process for printing inexpensive, three-dimensional thermoelectric generators.
Feb 8th, 2021
Karlsruhe Institute of Technology
With the help of newly developed inks and special production techniques, such as origami, inexpensive thermoelectric generators can be produced for various applications.
Andres Rösch, KIT
Thermoelectric generators, TEGs for short, convert ambient heat into electrical power. They enable maintenance-free, environmentally friendly, and autonomous power supply of the continuously growing number of sensors and devices for the Internet of Things (IoT) and recovery of waste heat. Scientists of Karlsruhe Institute of Technology (KIT) have now developed three-dimensional component architectures based on novel, printable thermoelectric materials. This might be a milestone on the way towards use of inexpensive TEGs. The results are reported in
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IMAGE: With the help of newly developed inks and special production techniques, such as origami, inexpensive thermoelectric generators can be produced for various applications. view more
Credit: Andres Rösch, KIT
Thermoelectric generators, TEGs for short, convert ambient heat into electrical power. They enable maintenance-free, environmentally friendly, and autonomous power supply of the continuously growing number of sensors and devices for the Internet of Things (IoT) and recovery of waste heat. Scientists of Karlsruhe Institute of Technology (KIT) have now developed three-dimensional component architectures based on novel, printable thermoelectric materials. This might be a milestone on the way towards use of inexpensive TEGs. The results are reported in
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IMAGE: Thanks to its flexibility and adhesion, the biodegradable display can be worn directly on the hand. view more
Credit: Manuel Pietsch, KIT
In the next years, increasing use of electronic devices in consumables and new technologies for the internet of things will increase the amount of electronic scrap. To save resources and minimize waste volumes, an eco-friendlier production and more sustainable lifecycle will be needed. Scientists of Karlsruhe Institute of Technology (KIT) have now been the first to produce displays, whose biodegradability has been checked and certified by an independent office. The results are reported in the
Journal of Materials Chemistry. (DOI: 10.1039/d0tc04627b)
Manuel Pietsch, KIT
E-waste is a growing problem, so if an electronic component can t be reused or recycled, it should at least be biodegradable. That s where an experimental new electronic display comes in, as it can be composted when no longer needed.
Created by scientists at Germany s Karlsruhe Institute of Technology (KIT), the device is a type of electrochromic display. It utilizes an organic polymer known as PEDOT:PSS, in which the amount of light absorption changes as voltage is applied – as a result, individual segments of the display change between almost-clear and opaque states.
That polymer is deposited on a cellulose di-acetate substrate and sealed in an electrolyte gelatine, making the display both flexible and adhesive. The electrical current is applied via gold electrodes. And like other electrochromic displays, this one can be inexpensively produced using an inkjet printer.