Researchers at Northwestern University and Israel's Tel Aviv University have identified significant issues with robotic touch sensor design linked to insulating layers on silicon rubber composites. These barriers interfere with electrical contact, hindering accurate measurements for robotic skins. By eliminating this error, low-cost robotic skins could successfully replicate human touch, crucial for effective object handling. Their study, published in Advanced Electronic Materials, provides insight into improving sensor accuracy and includes practical troubleshooting strategies for engineers, enhancing the reliability of robotic touch sensors.
A lot of scientists misunderstand their sensor response because they lump together the behavior of the contacts with the behavior of the sensor material, resulting in inconsistent data.
Our work identifies the exact problem, quantifies its extent both microscopically and electrically, and gives a clear step-by-step trouble-shooting manual to fix the problem.
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