Carbon-based resistive flexible pressure sensor
A pressure sensor and resistive technology, which is applied in the field of new sensors, can solve the problems that cannot meet the needs of high-frequency pressure signal measurement, and achieve the effects of high sensitivity, good stability and wide measurement range
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[0041] Refer to figure 1 , The present invention has a film structure as a whole, including a four-layer structure film, a flexible polyimide film layer 1, a silver electrode layer 2, a flexible graphene and graphene oxide composite film layer 3, and a graphene oxide film insulating protective layer 4 . The manufacturing and assembly process of the present invention is as follows:
[0042] First, make the substrate of the pressure sensor: through mature ion exchange and inkjet printing technology, grow a layer of silver electrodes with a thickness of 2 μm on both ends of a clean polyimide film with a thickness of 50 μm.
[0043] Then make the upper functional layer of the pressure sensor: mix graphene and graphene oxide at a ratio of 5:1 and prepare a suspension with a concentration of 1.5mg / ml, and prepare a simple graphene oxide suspension at the same time Solution, the concentration is 1.5mg / ml. Then the two suspensions were continuously filtered by sequential ...
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