Engineers at the University of Pennsylvania have developed elastic transistors using a new
In their work, the researchers usedlateral phase separation induced microgrid (LPSM) strategy. The method involves mixing a semiconductor and an elastomer -- or rubber -- and spin-coating the precursors with a liquid mixture to make rubbery semiconductor thin films, the scientists explain.
Using this method, scientists have developedtwo types of p- and n-type semiconductors, where the main charge carriers are holes and electrons, respectively. Scientists have demonstrated that they can be used to create flexible electronic devices, including transistors, inverters and photodetectors. All devices can be stretched while maintaining their properties, the authors of the work note.
To demonstrate practical applicationresearchers have developed an elastic bioelectronic device called an epicardial patch. They implanted the finished device into rodents. As the heart expanded and contracted during the beating, the epicardial patch moved with it and recorded electrophysiological parameters. This is necessary for the diagnosis of individual disorders in the work of the heart.
The developers believe that the new technology will open up a new direction for creating devices for biomedical research, wearable and high-performance electronics.
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On the cover: elastic transistor. Image: Jeff Xu, Penn State