CN109752029A - A kind of preparation method of the capacitive flexible sensor of paper base - Google Patents
A kind of preparation method of the capacitive flexible sensor of paper base Download PDFInfo
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- CN109752029A CN109752029A CN201811511149.0A CN201811511149A CN109752029A CN 109752029 A CN109752029 A CN 109752029A CN 201811511149 A CN201811511149 A CN 201811511149A CN 109752029 A CN109752029 A CN 109752029A
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Abstract
The invention discloses a kind of preparation methods of the capacitive flexible sensor of paper base, comprising: by handling paper base, the paper base surface is made to form close and distant water patterns；Conductive material is filled into the hydrophilic region on the close and distant water patterns, so that the conductive material is formed conductive layer on the paper base surface, and form external interface in conductive layer edge connection outside lead；The paper base, conductive layer and portion of external lead are packaged with the first encapsulated layer, form monolithic electrode plate；The one side of the close conductive layer of two monolithic electrode plates is bonded in opposite directions, two-pad electrode plate is formed, then be packaged the surface of the two-pad electrode plate by the second encapsulated layer, obtains capacitive flexible sensor.Not only manufacture craft is simple for preparation method provided by the invention, and finished product Young's modulus is low, light-weight, and has low cost, and high-flexibility is highly sensitive, good biocompatibility and it is wearable the advantages that.
Description
Technical field
The invention belongs to flexible sensor technical field, in particular to the preparation side of a kind of capacitive flexible sensor of paper base
Method.
Background technique
Wearable sensors in the wide of fields such as personal health, physical activity monitoring, artificial intelligence robots due to answering
With prospect, the extensive concern of academia and industry is caused.Wearable sensors due to modulus is low, light-weight, strong flexibility,
It with the performances such as stretchable, can be very good to be fitted on skin or organ, can recorde from small physiological signal (such as arteries and veins
Fight, cardiac rate, breathing, sounding) to high-intensitive action signal (such as muscular movement), it is body-building information trace, medical diagnosis on disease
A kind of new approach is provided with Risk Monitoring.It has been developed based on piezoelectricity, pressure drag, resistance and capacitance detecting principle at present
Flexible sensor.However, most methods depend on microelectronics manufacture, it is related to complicated manufacturing process, as ultraviolet light shines
Penetrate, corona treatment, thin film vacuum deposition, from spin-coated layer, photoetching, dry and wet etching, trans-printing etc..Although these methods are
It is proved to be effective, but high expense brought by expensive instrument and material limits their application.By simple
Manufacture craft, developing a kind of highly sensitive, high performance-price ratio novel flexible sensor is still a urgent problem to be solved.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of low costs, the highly sensitive capacitive flexible sensing of paper base
The preparation method of device.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of preparation method of the capacitive flexible sensor of paper base, comprising:
By handling paper base, the paper base surface is made to form close and distant water patterns；
Conductive material is filled into the hydrophilic region on the close and distant water patterns, makes the conductive material in the paper base
Surface forms conductive layer, and forms external interface in conductive layer edge connection outside lead；
The paper base, conductive layer and portion of external lead are packaged with the first encapsulated layer, form monolithic electrode plate；
The one side of the close conductive layer of two monolithic electrode plates is bonded in opposite directions, forms two-pad electrode plate, then
The surface of the two-pad electrode plate is packaged by the second encapsulated layer, obtains capacitive flexible sensor.
Further, when by handling the paper base, the processing method of the use includes spin-coating method, lamination
Method, photoetching process, seal method, intaglio printing, letterpress, wax printing method, ink-jet printing, silk screen print method, magnetron sputtering, heat are steamed
Plating, the method for printing and dyeing, chemical conversion membrane processing method, fan-fold paper template, adhesive tape transfer method, physical vaporous deposition and plasma etching
One or more of method.
Further, the fan-fold paper template includes:
After the pattern that paper matrix plate is cut into the hollow out of folding, barrier material is smeared on the paper matrix plate；
The material that paper base can be prepared is put into the centre of the fan-fold paper template, forms sandwich structure, the fan-fold paper
Barrier material in template by contact paper base prepare material after, the barrier material penetrates into the preparing on material of paper base,
And then close and distant water patterns are formed on the paper base prepared.
Further, the method for the hydrophilic region that conductive material is added to paper base be pipettor dropwise addition, 3D printing method,
One or more of seal method and inkjet printing.
Further, the pattern that conductive layer is formed on the paper base is ellipse, circle, rectangle, star, triangle, five
Side shape, hexagon, arrow-shaped or semi-moon shaped basic figure, or for Bezier, Peano, Hilbert, Moore and
One or more of the fractal curve of Greek cross curve.
Further, first encapsulated layer and the second encapsulated layer are that flexible material is prepared, the flexible material
Including polyethylene naphthalate, polymethyl methacrylate, polyurethanes, urethane acrylate, poly dimethyl
Siloxanes, polyacrylonitrile, polyethylene terephthalate, polyethylene, polypropylene, polyamide, polyvinylidene fluoride acid, polytetrafluoroethyl-ne
One or more of alkene, polyvinyl alcohol, polylactic acid, polyetherimide, polycarbonate, polyimides, polyvinyl chloride.
Further, the paper base is that paper-like materials or/and the biomaterial containing micro-structure are prepared, the paper
The paper-like materials of base include face tissue, nitrocellulose membrane, qualitative filter paper, chromatographic paper, printing paper, blotting paper, brown paper, fibre
One or more of element-carbon nanotube extrusion coating paper, fiber-silver ink extrusion coating paper, drawing paper are tieed up, the paper base contains micro- knot
The biomaterial of structure includes one or more of PET film, nanofiber-based, cotton, silk scarf, natural rubber films.
Further, the conductive includes metal material, metal oxide, liquid metal alloy, inorganic partly leads
One or more of body, organic conductive macromolecule material and carbon materials；The carbon materials include and are not limited to graphene
Film, graphene wall, graphene microchip, graphene oxide, graphite alkane, graphite, carbon black, carbon nanotube, carbon nanocoils；The gold
Belong to material to include and be not limited to silver nanowires, Pt nanowires, nanowires of gold, zinc oxide nanowire, Nano silver grain, copper nanometer
Line, monoatomic layer germanium alkene, diatomic layer germanium alkene；The metal oxide includes and is not limited to tin indium oxide, fluorine oxide tin, oxidation
Aluminium zinc；Inorganic semiconductor includes and is not limited to silicon, germanium, cadmium telluride；The liquid metal alloy includes and is not limited to gallium indium tin conjunction
Gold；The organic conductive macromolecule material includes and is not limited to polythiophene, polyacetylene, polyaniline, polypyrrole.
Further, the outside lead is Cu, Au, Pt, Al, Ag, Ni, Pd, made of the pure metal or alloy in Ru
Conducting wire or conduction band.
Further, the paper base, the first encapsulated layer and the second encapsulated layer are with a thickness of 0.001-5mm, area 0.1-
100cm2, the conductive layer thickness is 0.001-5mm, area 0.1-100cm2, the outside lead diameter is 0.1-5mm.
A kind of preparation method of the capacitive flexible sensor of paper base provided by the invention, passes through the hydrophobe on paper base surface
Conductive material is filled in hydrophilic region on pattern, forms conductive material and the consistent conduction of hydrophobe pattern form in paper base
Paper base, conductive layer and portion of external lead, are packaged by layer with the first encapsulated layer from two sides, form monolithic electrode plate；By two
A monolithic electrode plate by its close to it is conductive it is laminated be bonded in opposite directions, formation two-pad electrode plate, then by two-pad electrode plate
It is packaged by the surface of the second encapsulated layer, obtains capacitive flexible sensor；Therefore, paper base provided by the invention is capacitive
Not only manufacture craft is simple for the preparation method of flexible sensor, and finished product Young's modulus is low, light-weight, and has low cost, high
Flexibility, highly sensitive, long service life, good biocompatibility, it is wearable the advantages that.Can be to pressing, the strain such as bending, stretching
There are preferable detection performance, the either extruding to the touching of moment or to lasting stress, can obtain tactile letter well
Breath.It can be used for various physiological signals such as breath signal, pulse signal, voice signal, the signals such as body kinematics signal adopt in real time
Collection.
Detailed description of the invention
Fig. 1 is a kind of process signal of the preparation method of the capacitive flexible sensor of paper base of implementation embodiment of the present invention
Figure；
Fig. 2 is the structural schematic diagram for the capacitive flexible sensor of paper base that implementation embodiment of the present invention is prepared；
Fig. 3 is survey of the capacitive flexible sensor of paper base that provides of implementation embodiment of the present invention in the case where different pressures act on
Test result figure；
Fig. 4 is placed on tester's wrist oar for the capacitive flexible sensor of paper base that implementation embodiment of the present invention provides and moves
The pulse waveform figure recorded at arteries and veins.
Specific embodiment
In order to overcome the shortcomings in the prior art, the present invention provides a kind of preparation method of capacitive flexible sensor of paper base.
To be more clear the object, technical solutions and advantages of the present invention, below in conjunction with the attached drawing in the preferred embodiment of the present invention,
Technical solution in the embodiment of the present invention is further described in more detail.Described embodiment is that a part of the invention is implemented
Example, instead of all the embodiments.The embodiments described below with reference to the accompanying drawings are exemplary, it is intended to for explaining this hair
It is bright, and be not considered as limiting the invention.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.With reference to the accompanying drawing
The embodiment of the present invention is described in detail.
As shown in Figure 1, a kind of preparation method of the capacitive flexible sensor of paper base, comprising:
S100, by handling paper base, so that paper base surface is formed close and distant water patterns；
S200, conductive material is filled into the hydrophilic region on close and distant water patterns, makes conductive material in paper base surface shape
External interface is formed at conductive layer, and in conductive layer edge connection outside lead；
S300, the paper base with conductive layer and outside lead is carried out by two sides encapsulation by the first encapsulated layer, makes paper base, leads
Electric layer and portion of external lead packages form monolithic electrode plate in the first encapsulated layer；
S400, the one side of the close conductive layer of two monolithic electrode plates is bonded in opposite directions, forms two-pad electrode plate, then
The surface of two-pad electrode plate is packaged by the second encapsulated layer, obtains capacitive flexible sensor.
As shown in Fig. 2, the capacitive flexible sensor of a kind of paper base that the embodiment of the present invention is prepared, including the first monolithic electricity
Pole plate 10 and the second monolithic electrode plate 20, the first monolithic electrode plate 10 and the second monolithic electrode plate 20 exist including paper base 30, setting
On paper base 30 and by the conductive layer 40 of the close and distant water-bound limitation on paper base 30, it is connect with conductive layer 40 and forms external interface
Outside lead 50 and towards the fitting of conductive layer 40 by paper base 30, conductive layer 40 and portion of external lead 50 be encapsulated in the
One encapsulated layer 60；First monolithic electrode plate 10 and 20 back side of the second monolithic electrode plate setting the second encapsulated layer (being not drawn into figure) will
First monolithic electrode plate 10 and the second monolithic electrode plate 20 are fit together with the first encapsulated layer 60 for front in opposite directions.
The working principle of the capacitive flexible sensor of a kind of paper base provided by the invention are as follows: when outer bound pair sensor applied force
Compression is brought it about, when bending deformation, the distance between upper layer and lower layer conductive layer will change, so that the paper base is electric
The capacitance size of appearance type flexible sensor changes.Metamorphosis of the sensor under current external force can pass through the change of capacitor
Change digitally embodies.
As a preferred embodiment, when by handling paper base, the processing method of use includes spin-coating method, layer
Platen press, photoetching process, seal method, intaglio printing, letterpress, wax printing method, ink-jet printing, silk screen print method, magnetron sputtering, heat
Vapor deposition, the method for printing and dyeing, chemical conversion membrane processing method, fan-fold paper template, adhesive tape transfer method, physical vaporous deposition and plasma erosion
One or more of lithography.
As a preferred embodiment, fan-fold paper template includes:
After the pattern that paper matrix plate is cut into the hollow out of folding, barrier material is smeared on the paper matrix plate；
The material that paper base can be prepared is put into the centre of fan-fold paper template, forms sandwich structure, in fan-fold paper template
Barrier material by contact paper base prepare material after, barrier material penetrates into the preparing on material of paper base, and then is preparing
Paper base on form close and distant water patterns.
It is pipettor dropwise addition, 3D by the method that conductive material is added to the hydrophilic region of paper base as a preferred embodiment
One or more of impact system, seal method and inkjet printing.
As a preferred embodiment, the pattern that conductive layer is formed on paper base is ellipse, circle, rectangle, star, triangle
Shape, pentagon, hexagon, arrow-shaped or semi-moon shaped basic figure, or be Bezier, Peano, Hilbert, Moore
With one or more of the fractal curve of Greek cross curve.
As a preferred embodiment, the first encapsulated layer and the second encapsulated layer are that flexible material is prepared, flexible material
Material includes polyethylene naphthalate, polymethyl methacrylate, polyurethanes, urethane acrylate, poly- diformazan
Radical siloxane, polyacrylonitrile, polyethylene terephthalate, polyethylene, polypropylene, polyamide, polyvinylidene fluoride acid, polytetrafluoro
One or more of ethylene, polyvinyl alcohol, polylactic acid, polyetherimide, polycarbonate, polyimides, polyvinyl chloride.
As a preferred embodiment, paper base is that paper-like materials or/and the biomaterial containing micro-structure are prepared,
The paper-like materials of the paper base include face tissue, nitrocellulose membrane, qualitative filter paper, chromatographic paper, printing paper, blotting paper, ox
One or more of mulberry paper, cellulose-carbon nano-tube extrusion coating paper, fiber-silver ink extrusion coating paper, drawing paper, the paper base
Biomaterial containing micro-structure includes one of PET film, nanofiber-based, cotton, silk scarf, natural rubber films or several
Kind.
As a preferred embodiment, conductive includes metal material, metal oxide, liquid metal alloy, nothing
One or more of machine semiconductor, organic conductive macromolecule material and carbon materials；Carbon materials include and are not limited to graphite
Alkene film, graphene wall, graphene microchip, graphene oxide, graphite alkane, graphite, carbon black, carbon nanotube, carbon nanocoils；Metal
Material include and be not limited to silver nanowires, Pt nanowires, nanowires of gold, zinc oxide nanowire, Nano silver grain, copper nano-wire,
Monoatomic layer germanium alkene, diatomic layer germanium alkene；Metal oxide includes and is not limited to tin indium oxide, fluorine oxide tin, aluminum zinc oxide；Nothing
Machine semiconductor includes and is not limited to silicon, germanium, cadmium telluride；The liquid metal alloy includes and is not limited to gallium-indium-tin alloy；It is described
Organic conductive macromolecule material includes and is not limited to polythiophene, polyacetylene, polyaniline, polypyrrole.
Pure metal or alloy as a preferred embodiment, in outside lead Cu, Au, Pt, Al, Ag, Ni, Pd, Ru
Manufactured conducting wire or conduction band.
As a preferred embodiment, with a thickness of 0.001-5mm, area is for paper base, the first encapsulated layer and the second encapsulated layer
0.1-100cm2, the conductive layer thickness is 0.001-5mm, area 0.1-100cm2, the outside lead diameter is 0.1-
5mm。
The sensor that a kind of preparation method of the capacitive flexible sensor of paper base provided in this embodiment is prepared is by upper and lower
Two monolithic conductive electrode compositions, wherein monolithic conductive plate is made of conductive layer and encapsulated layer, also, in monolithic conductive plate
The pattern of conductive layer can according to need and be designed to different shapes, meanwhile, by flexible material preparation the first encapsulated layer and
Second encapsulated layer encapsulates conductive layer to form single electrode plate, and two monolithic conductive plates is made to constitute capacitive flexible sensor,
The sensor detection sensitivity is high, can reach 16kpa-1。
A kind of preparation method of the capacitive flexible sensor of paper base provided by the invention is done below by specific embodiment
It illustrates.
Embodiment 1:
(1) paper matrix with channel is made on segmental mold paperboard using the mode of graduating with cutter or laser engraving or mechanical engraving
Plate, and PDMS mixed liquor (10:1) is equably applied on paper matrix plate using glass bar.Single layer face tissue is sandwiched into segmental mold
In plate, by one face flype of folding template, 1 minute is stood, until PDMS solution complete wetting face tissue and without will after diffusion
Internal face tissue takes out.Paper base is put into 60 DEG C of heating plates and is heated 2 minutes, is taken out, the face-cloth for there are close and distant water patterns is obtained
Paper, pattern are the square electrode plate of 15X15mm.
(2) silver nanowires solution is drawn using 100ul liquid-transfering gun, is added drop-wise to the hydrophilic region of face tissue, it is naturally dry to it
The silver nanowires conductive layer on paper is obtained after dry.
(3) lead is introduced in the marginal position of circuit, and silver paste, which is added dropwise, makes conductive layer be connected with lead terminal.
(4) face tissue with silver nanowires conductive layer and outside lead is carried out by two sides encapsulation by PU film, makes face-cloth
Paper, silver nanowires conductive layer and portion of external lead packages form monolithic electrode plate in PU film.
(5) will by step (1)-(4) obtain two pieces of flexible monolithic conductive plate close conductive layer one side into
The opposite fitting of row forms two-pad electrode plate, then two-pad electrode plate is carried out overall package by two PU films, obtains capacitive soft
Property sensor.
Embodiment 2
Referring to embodiment 1, a kind of capacitive flexible sensor production method of paper base and embodiment 1 provided in this embodiment are not
It is with place, carries out paper base surface modification using ink-jet printing in step (1), specific steps replace with as follows: by pattern
The reverse of the conductive layer pattern editted inputs computer, carries out oiliness water resistant ink by Canon iP2780 type ink-jet printer
Inkjet printing obtains the printing paper paper base with close and distant water patterns on napkin paper.
Embodiment 3
Referring to embodiment 1, a kind of capacitive flexible sensor preparation method of paper base and embodiment 1 provided in this embodiment are not
It is with place, the channel pattern on paper matrix plate described in step (1) is changed to size by the square of 15X15mm and is
15X15mm, " F " type that line thickness is 500 μm.
Embodiment 4
Referring to embodiment 1, a kind of capacitive flexible sensor preparation method of paper base and embodiment 1 provided in this embodiment are not
It is with place, conductive used in step (2) is carbon nano-tube solution.
Embodiment 5
Referring to embodiment 1, a kind of capacitive flexible sensor preparation method of paper base and embodiment 1 provided in this embodiment are not
It is with place, encapsulating material used in step (4) and step (5) is PDMS film.
Embodiment 6
The wrist radial artery of measured is attached at using the capacitive flexible sensor of paper base prepared by 1 method of embodiment
Place, the capacitance signal of inventive sensor is read using LCR table, and waveform recording is as shown in Figure 4.
Referring to Fig. 3, the capacitive flexible sensor of paper base of preparation of the embodiment of the present invention is presented under the action of different pressures
Bilinearity variation, in 0-1kPa pressure limit, the flexible sensor sensitivity can reach 7.492kPa-1, pressed in 1-2.5Ka
Within the scope of power, the flexible sensor sensitivity can reach 0.896kPa-1, it can satisfy the requirement of physiology signal measurement,
Such as the measurement of tiny signal pulse wave.The capacitive flexible sensor of paper base has high sensitivity, and wearable property is good, stability
Good feature.
Referring to fig. 4, the pulse wave of the capacitive flexible sensor measurement of the paper base of preparation of the embodiment of the present invention, pulse waveform
Clear and accurate, the characteristic peak containing standard pulse wave illustrates present invention sensitivity with higher, can detecte minor change
Physiological signal.With high sensitivity, the advantages that high s/n ratio, high duplication, low sluggishness, low error.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (10)
1. a kind of preparation method of the capacitive flexible sensor of paper base characterized by comprising
By handling paper base, the paper base surface is made to form close and distant water patterns；
Conductive material is filled into the hydrophilic region on the close and distant water patterns, makes the conductive material on the paper base surface
Conductive layer is formed, and forms external interface in conductive layer edge connection outside lead；
The paper base, conductive layer and portion of external lead are packaged with the first encapsulated layer, form monolithic electrode plate；
The one side of the close conductive layer of two monolithic electrode plates is bonded in opposite directions, forms two-pad electrode plate, then pass through
The surface of the two-pad electrode plate is packaged by the second encapsulated layer, obtains capacitive flexible sensor.
2. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 1, which is characterized in that passing through
When handling the paper base, the processing method of the use includes spin-coating method, laminating method, photoetching process, seal method, intaglio process
Brush, letterpress, wax printing method, ink-jet printing, silk screen print method, magnetron sputtering, hot evaporation, the method for printing and dyeing, at chemical composition coating
One or more of logos, fan-fold paper template, adhesive tape transfer method, physical vaporous deposition and plasma etching method.
3. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 2, which is characterized in that the folding
Stacker template includes:
After the pattern that paper matrix plate is cut into the hollow out of folding, barrier material is smeared on the paper matrix plate；
The material that paper base can be prepared is put into the centre of the fan-fold paper template, forms sandwich structure, the fan-fold paper template
On barrier material by contact paper base prepare material after, the barrier material penetrates into the preparing on material of paper base, in turn
Close and distant water patterns are formed on the paper base prepared.
4. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 1, which is characterized in that described to incite somebody to action
Conductive material is added to the method for the hydrophilic region of paper base as one in pipettor dropwise addition, 3D printing method, seal method and inkjet printing
Kind is several.
5. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 1, which is characterized in that the paper
The pattern that conductive layer is formed on base is ellipse, circle, rectangle, star, triangle, pentagon, hexagon, arrow-shaped or half a month
The basic figure of shape, or for Bezier, Peano, Hilbert, Moore and Greek cross curve fractal curve in
One or more.
6. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 1, which is characterized in that described
One encapsulated layer and the second encapsulated layer are that flexible material is prepared, the flexible material include polyethylene naphthalate,
Polymethyl methacrylate, urethane acrylate, dimethyl silicone polymer, polyacrylonitrile, gathers to benzene two polyurethanes
Formic acid glycol ester, polyethylene, polypropylene, polyamide, polyvinylidene fluoride acid, polytetrafluoroethylene (PTFE), polyvinyl alcohol, polylactic acid, polyethers
One or more of acid imide, polycarbonate, polyimides, polyvinyl chloride.
7. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 1, which is characterized in that the paper
Base is that paper-like materials or/and the biomaterial containing micro-structure are prepared, and the paper-like materials of the paper base include face-cloth
Paper, nitrocellulose membrane, qualitative filter paper, chromatographic paper, printing paper, blotting paper, brown paper, cellulose-carbon nano-tube extrusion coating paper, fibre
One or more of dimension-silver ink extrusion coating paper, drawing paper, the biomaterial containing micro-structure of the paper base include PET film,
One or more of nanofiber-based, cotton, silk scarf, natural rubber films.
8. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 1, which is characterized in that described to lead
Electric layer material include metal material, metal oxide, liquid metal alloy, inorganic semiconductor, organic conductive macromolecule material and
One or more of carbon materials；The carbon materials include and to be not limited to graphene film, graphene wall, graphene micro-
Piece, graphene oxide, graphite alkane, graphite, carbon black, carbon nanotube, carbon nanocoils；The metal material includes and is not limited to Yin Na
Rice noodles, Pt nanowires, nanowires of gold, zinc oxide nanowire, Nano silver grain, copper nano-wire, monoatomic layer germanium alkene, diatomic layer
Germanium alkene；The metal oxide includes and is not limited to tin indium oxide, fluorine oxide tin, aluminum zinc oxide；Inorganic semiconductor includes and not
It is limited to silicon, germanium, cadmium telluride；The liquid metal alloy includes and is not limited to gallium-indium-tin alloy；The organic conductive macromolecule material
Material includes and is not limited to polythiophene, polyacetylene, polyaniline, polypyrrole.
9. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 1, which is characterized in that described outer
Portion's lead is conducting wire or conduction band made of the pure metal or alloy in Cu, Au, Pt, Al, Ag, Ni, Pd, Ru.
10. a kind of preparation method of the capacitive flexible sensor of paper base according to claim 1, which is characterized in that described
Paper base, the first encapsulated layer and the second encapsulated layer are with a thickness of 0.001-5mm, area 0.1-100cm2, the conductive layer thickness is
0.001-5mm, area 0.1-100cm2, the outside lead diameter is 0.1-5mm.
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