Chemical engineer Zhennan Bao and her team of Stanford researchers reveal in a new study how
There are more than 40 thousand transistors on one square centimeter of artificial skin: the team plans to increase this number.
The plan is to increase the number of transistors to a billion, which will be enough to create simple circuits for sensors on the skin, as well as implantable bioelectronics.
Our method increases the density of elastictransistors by more than 100 times compared to earlier designs. We achieved this without sacrificing either electronic or mechanical performance.
Yu-Qing Zheng, researcher and co-first author of the paper
The authors explain that while working, theyused a new process to create flexible circuits: they stretched them parallel and perpendicular to twice their original size. As a result, they did not crack or delaminate. The transistors remained electrically stable even after thousands of repeated stretches.
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