Electronic skin, preparation method and use thereof
First Claim
1. A piezoresistive electronic skin, characterized by comprising:
- a plurality of overlapped flexible substrates;
two conductive layers respectively arranged on two microstructure-patterned contact surfaces of adjacent flexible substrates and being contacted with each other, wherein contact areas of said conductive layers have non-planar microstructure; and
conductive electrodes electrically connected with said two conductive layers;
wherein said conductive layer comprises a carbon nanotube film which comprises networks formed by cross-linked carbon nanotubes;
wherein said plurality of overlapped flexible substrates are made of one or a combination of more of the following materials;
polydimethylsiloxane (PDMS) film, polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), polymethyl methacrylate (PMMA), nylon (Nylon), polycarbonate (PC), polyurethane (PU), polytetrafluoroethylene (PTFE), polyethylene terephthalate (PET, PETE), and high-polymer rubber materials.
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Abstract
The invention provides a piezoresistive electronic skin, a preparation method and a use thereof. The piezoresistive electronic skin uses carbon nanotube film as the conductive layer and uses materials provided with micro-nano patterns, such as polydimethylsiloxane, polyethylene terephthalate, polyvinyl alcohol, polyvinyl formal, polyethylene, and so on, as the substrate, enabling the substrate has advantages of high flexibility and being pliable, and it needs low operating voltage and little power consumption, but has high sensitivity and short response time. More importantly, the invention uses the patterned flexible substrate as the basis, greatly improving the sensitivity of electronic skin reacting to tiny applied force from outside. The invention also provides a capacitive electronic skin and a preparation method thereof. Further, the invention also provides a use of the piezoresistive electronic skin or the capacitive electronic skin on speech recognition, pulse detection, medical robot, etc.
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Citations
11 Claims
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1. A piezoresistive electronic skin, characterized by comprising:
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a plurality of overlapped flexible substrates; two conductive layers respectively arranged on two microstructure-patterned contact surfaces of adjacent flexible substrates and being contacted with each other, wherein contact areas of said conductive layers have non-planar microstructure; and conductive electrodes electrically connected with said two conductive layers; wherein said conductive layer comprises a carbon nanotube film which comprises networks formed by cross-linked carbon nanotubes; wherein said plurality of overlapped flexible substrates are made of one or a combination of more of the following materials;
polydimethylsiloxane (PDMS) film, polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polystyrene (PS), polymethyl methacrylate (PMMA), nylon (Nylon), polycarbonate (PC), polyurethane (PU), polytetrafluoroethylene (PTFE), polyethylene terephthalate (PET, PETE), and high-polymer rubber materials. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A preparation method of a piezoresistive electronic skin, characterized by comprising steps as follows:
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S1. preparing two microstructure-patterned flexible substrates; S2. preparing a solution for a conductive layer, respectively coating it to the microstructure-patterned surfaces of the two flexible substrates to form conductive layers, assembling the conductive layers by making the microstructure-patterned surfaces face to face to form a film device with the conductive layers being contacted with each other; S3. forming upper, lower conductive electrodes respectively on the two conductive layers by conductive material, and leading wires from the conductive electrodes, thereby obtaining a piezoresistive electronic skin; wherein the solution for the conductive layer is a solution of carbon nanotubes, and the conductive layer is made of carbon nanotube film. - View Dependent Claims (10, 11)
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Specification