Flexible: Electronic circuits on a film of polyimide from the Empa laboratory form synaptic transistors. Image: Empa
Flexible: Electronic circuits on a film of polyimide from the Empa laboratory form synaptic transistors. Image: Empa - In the FOXIP project, researchers form Empa, EPFL and the Paul Scherrer Institute attempted to print thin-film transistors with metal oxides onto heat-sensitive materials such as paper or PET. The goal was ultimately not achieved, but those involved consider the project a success - because of a new printing ink an a transistor with "memory effect". The bar was undoubtedly set high: In the research project Functional Oxides Printed on Polymers and Paper - FOXIP for short - the goal was to succeed in printing thin-film transistors on paper substrates or PET films. Electronic circuits with such elements play an important role in the growing Internet of Things (IoT), for example as sensors on documents, bottles, packaging.. a global market worth billions. If it were feasible to manufacture such transistors with inorganic metal oxides, this would open up a plethora of new possibilities.
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