Olalekan O. Olowo, Ruoshi Zhang, Ji-Tzuoh Lin, Danming Wei, A. Sherehiy, Douglas Jackson, Dilan Ratnayake, Alireza Tofangchi, D. Popa
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Aerosol Jet Printed Tactile Sensor on Flexible Substrate
Inkjet printing for fabricating microstructures has gained popularity during the last decade, making it possible to realize complex electronic circuits, components, and devices previously manufactured using 2D lithographic processes. In this work, we use aerosol inkjet printing delivered from the NeXus, a custom-built microfabrication platform that can deposit silver ink on a flexible printed circuit (FPC) substrate. We present the fabrication method of a 10mm diameter circular strain gauge tactile sensor, which is annealed using oven curing or intense pulse light (IPL) process. The resulting sensor performance under varying curing schedules is evaluated by loading packaged sensors with increasing weight, reporting a measured resistance in the 300Ω-1.2kΩ range.