CN110987260B - Flexible electronic skin capable of sensing pressure and air sensitivity simultaneously and preparation method thereof - Google Patents
Flexible electronic skin capable of sensing pressure and air sensitivity simultaneously and preparation method thereof Download PDFInfo
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- CN110987260B CN110987260B CN201911038761.5A CN201911038761A CN110987260B CN 110987260 B CN110987260 B CN 110987260B CN 201911038761 A CN201911038761 A CN 201911038761A CN 110987260 B CN110987260 B CN 110987260B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
Abstract
The invention discloses a flexible electronic skin capable of sensing pressure and gas simultaneously, which comprises a lower substrate, electrodes, a sensitive material and an upper substrate, wherein the lower substrate is provided with a plurality of electrodes; the conductive electrode is arranged on the lower substrate; the sensitive material is arranged on the electrode, is a gas-sensitive material grown on the flexible attachment layer and is used for simultaneously detecting pressure and gas sensitivity; the upper substrate is arranged on the sensitive material, the electronic skin can simultaneously sense pressure stimulation and air-sensitive stimulation in a data signal, and the two types of stimulation are not interfered; the multifunctional flexible electronic skin is manufactured by a specific manufacturing method after a sensitive material grows on a flexible material through a unique preparation process, so that the sensor is excellent in force testing performance, stable in performance, excellent in gas-sensitive performance, high in sensitivity, good in repeatability, simple in manufacturing method, simple in material source and low in price.
Description
The invention relates to a divisional application of an invention patent application with the application number of 201810230663.0 and the name of 'flexible electronic skin capable of sensing pressure and gas simultaneously and a preparation method thereof', which is applied by an applicant at 20.03.2018.
Technical Field
The invention belongs to the field of sensors, and particularly relates to a flexible electronic skin capable of sensing pressure and gas simultaneously and a preparation method thereof.
Background
Robots, whose task is to assist or replace human work, such as production, construction, or dangerous work. Through the integration of various sensors, the robot realizes functions such as vision, hearing, touch, smell and the like. However, how to have multiple perception functions in one organ like a human being is one of the challenging problems faced by the robot system.
The emergence of the electronic skin provides an effective solution path for solving the problem, the electronic skin has a simple structure, can be processed into various shapes, can be attached to the surface of equipment like clothes, and can enable a robot to sense information such as the position, the direction, the hardness and the like of an object. Although various multifunctional electronic skins are reported, all the multifunctional electronic skins are integrated after independent detection of a single sensor, and one data signal is only one sensing information, for example, a single gas sensor is integrated with a single pressure sensor, and gas sensing and pressure information is sensed simultaneously through two signals. The sense of smell and touch are important sensing modes of the human body and are difficult to sense in one signal at the same time, because the gas-sensitive materials are mostly metal oxide semiconductors and a few polymers, the strain limit of the materials is not high, and the gas-sensitive performance can be lost because the structure of the material is damaged when the substrate is deformed slightly. Therefore, despite the difficulty of development, it is very necessary to develop a multifunctional electronic skin with multi-sensing capability, which senses different types of stimuli simultaneously in one signal.
Disclosure of Invention
Aiming at least one of the defects or improvement requirements of the prior art, the invention provides the flexible electronic skin capable of sensing pressure and gas sensitivity simultaneously and the preparation method thereof, and solves the problem that the existing electronic skin cannot sense pressure and gas sensitivity simultaneously in one signal.
To achieve the above objects, according to one aspect of the present invention, there is provided a flexible electronic skin for sensing pressure and gas simultaneously, including a lower substrate and/or an upper substrate, electrodes, and a sensing material;
if the lower substrate exists, the conductive electrode is arranged on the lower substrate;
the sensitive material is arranged on the electrode, is a gas-sensitive material grown on the flexible attachment layer and is used for detecting pressure and gas sensitivity simultaneously; if the upper substrate exists, the upper substrate is arranged on the sensitive material.
Preferably, the flexible attachment layer is dust-free cloth, the gas-sensitive material is polyaniline, and the flexible attachment layer is made of dust-free clothThe sensitive material is polyaniline grown on dust-free cloth and used for simultaneously detecting pressure and NH with different concentrations3。
Preferably, the gas-sensitive material is replaced by the polyaniline with another gas-sensitive semiconductor material including a metal oxide semiconductor or a polymer semiconductor, thereby detecting other gas components.
Preferably, the flexible attachment layer is replaced by another flexible material comprising one of PDMS, a flexible inorganic material, a flexible polymer material from the dust-free arrangement.
Preferably, the lower substrate is an air-permeable nonwoven fabric with the bonding surface facing upwards;
or the lower substrate can be other air-permeable materials including one of cotton cloth, polyester cloth, rigid net or combination thereof, which do not affect the function of the sensor.
Preferably, the electrode is a conductive tape with its adhesive surface facing downward;
or the electrode can also be a high-conductivity composite material formed by randomly combining gold, platinum, silver, nickel, copper, carbon nano tubes and graphene.
Preferably, the upper substrate is a gauze;
or the upper substrate can be other air-permeable materials which do not affect the function of the sensor and comprise one of cotton cloth, polyester fabric and rigid net or the combination of the cotton cloth, the polyester fabric and the rigid net.
In order to achieve the above object, according to a second aspect of the present invention, there is provided a method for preparing a flexible electronic skin capable of sensing pressure and gas simultaneously, which takes polyaniline grown on a dust-free cloth as a sensitive material as an example, and comprises the following steps:
s1, pretreatment of the dust-free cloth: firstly, performing ultrasonic treatment with ethanol for 5-30 minutes, then performing ultrasonic treatment with deionized water for 5-30 minutes, then performing ultrasonic treatment with ethanol for 5-30 minutes, and drying at 40-80 ℃;
s2, aniline treatment before synthesis: aniline monomer is as follows 1: adding the mixture into 1M HCl solution according to the volume ratio of 150-1:200, carrying out ultrasonic treatment for 5-30 minutes, and precooling the mixture for 1-5 hours in a refrigerator at the temperature of 0 ℃;
s3, treatment of ammonium persulfate before synthesis: ammonium persulfate is prepared according to the following steps of 1: mass-to-volume ratio g of 50-1: 100: adding ml of the mixture into 1M HCl solution, carrying out ultrasonic treatment for 5-30 minutes, and precooling the mixture for 1-5 hours in a refrigerator at the temperature of 0 ℃;
s4, synthesis process: dropwise adding an ammonium persulfate solution into an aniline monomer solution at room temperature, then putting a dust-free cloth into the reaction solution, and reacting for 10-40 minutes at 0 ℃;
s5, post-processing: then, taking out the dust-free cloth, washing the dust-free cloth for 3 times by using 1M hydrochloric acid solution and ethanol respectively, and drying the dust-free cloth in an oven at the temperature of between 40 and 80 ℃;
s6, installation process: and finally, sequentially mounting all components of the electronic skin from bottom to top to form the sensor.
In order to achieve the above object, according to a third aspect of the present invention, there is provided a method for preparing flexible electronic skin capable of sensing pressure and gas simultaneously, wherein tin oxide grown on a dust-free cloth is used as a sensitive material, and the polyaniline is replaced by tin oxide in a metal oxide semiconductor material, the method comprising the following steps:
s1, pretreatment of the dust-free cloth: firstly, performing ultrasonic treatment with ethanol for 5-30 minutes, then performing ultrasonic treatment with deionized water for 5-30 minutes, then performing ultrasonic treatment with ethanol for 5-30 minutes, and drying at 40-80 ℃;
s2 SnCl before synthesis2Weighing SnCl2·2H2Dissolving O in distilled water to obtain 0.05ml/L solution, adding NaOH and SnCl2The molar ratio of (1) is 4:1, and the mixture is fully mixed by magnetic stirring for 20 minutes at room temperature;
s3, synthesis process: pouring the prepared solution into a reaction kettle at room temperature, then putting the dust-free cloth into the reaction solution, and reacting for 12-24 hours at 180 ℃;
s4, post-processing: then, taking out the dust-free cloth, washing the dust-free cloth for 3 times by using 1M hydrochloric acid solution and ethanol respectively, and drying the dust-free cloth in an oven at the temperature of between 40 and 80 ℃;
s5, installation process: and finally, sequentially mounting all components of the electronic skin from bottom to top to form the sensor.
Preferably, in the method for preparing flexible electronic skin capable of sensing pressure and gas simultaneously according to the second and third aspects, the flexible attachment layer is replaced by another flexible material including one of PDMS, a flexible inorganic material and a flexible polymer material from the dust-free arrangement.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. according to the multifunctional flexible electronic skin designed by the invention, the gas-sensitive material is attached to the flexible attachment layer, the electronic skin can sense pressure stimulation and gas-sensitive stimulation simultaneously in one data signal, and the two types of stimulation are not interfered;
2. the multifunctional flexible electronic skin is manufactured according to a specific manufacturing mode by growing a sensitive material on a flexible material through a unique preparation process, so that the force testing performance of the sensor is excellent, the performance is stable, the gas-sensitive performance is excellent, the sensitivity is high, the repeatability is good, the manufacturing method of the sensor is simple, the material source is simple, and the price is low;
3. the electronic skin and the preparation process thereof are suitable for organic sensitive materials and inorganic semiconductor materials, and have wide application range;
4. the electronic skin can be used for detecting human physiological signals including joint bending, nose wing movement and the like, and can sense sensitive gas in the air like a nose.
Drawings
Fig. 1 is a schematic structural diagram of a flexible electronic skin for sensing pressure and gas simultaneously according to embodiment 1 of the present invention;
fig. 2 is a flowchart of a method for preparing a flexible electronic skin capable of sensing pressure and gas simultaneously according to embodiment 2 of the present invention (taking polyaniline grown on a dust-free cloth as an example of a sensitive material);
fig. 3 is a flowchart of a method for preparing flexible electronic skin capable of sensing pressure and gas simultaneously according to embodiment 3 of the present invention (taking tin oxide grown on a dust-free cloth as an example of a sensitive material);
FIG. 4 is a microscopic topography of a sensitive material;
FIG. 5 is a graph of pressure response;
FIG. 6 is a graph of repeatability performance at different pressures;
FIG. 7 is a graph showing the repeatability of the pressure at different frequencies with constant magnitude;
FIG. 8 is a pressure response performance diagram;
FIG. 9 is a graphical representation of the pressure stability performance over 2000 cycles;
FIG. 10 is a graph showing the gas-sensitive response of different concentrations of a sensitive gas;
FIG. 11 is a schematic diagram showing the gas-sensitive response repeatability of the same concentration of the sensitive gas;
FIG. 12 is a schematic diagram of the selective performance of other common gases;
fig. 13 is a graph showing the pressure stimulation performance of the gas sensitive response at different stages.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
Example 1
As a preferred embodiment of the present invention, as shown in fig. 1, the present invention provides a flexible electronic skin for sensing pressure and gas simultaneously, comprising a lower substrate 1, an electrode 2, a sensitive material 3 and an upper substrate 4; the assembly method is as follows: the bonding surface of the lower substrate 1 is upward, the bonding surface of the electrode 2 is downward, the electrode 2 is bonded on the lower substrate 1, the sensitive material 3 is placed on the electrode 2 so that the electrode 3 is in contact with the sensitive material 3, and the upper substrate 4 is placed on the sensitive material 3. The sensitive material 3 is a gas sensitive material grown on the flexible attachment layer and used for simultaneously detecting pressure and gas sensitivity. The electrode 2 is connected with a measuring instrument, when the upper substrate 4 receives pressure stimulation and the electronic skin is in a sensitive gas environment, the sensitive material senses the pressure stimulation and the gas-sensitive stimulation simultaneously, because the attachment layer of the gas-sensitive material is a flexible material with certain compressive strength, the tissue structure and the gas-sensitive performance of the gas-sensitive material cannot be damaged by the pressure stimulation, and the controllable compression of the gas-sensitive material can output corresponding pressure electric signals, so that the two stimulations sensed by the same data signal of the electrode have no interference.
The lower substrate 1 is a breathable non-woven adhesive tape, and the bonding surface of the lower substrate is upward; other air-permeable materials which do not affect the function of the sensor, such as cotton cloth, polyester fabric, rigid net and the like, can also be used. The electrode 2 is a conductive adhesive tape, and the bonding surface of the conductive adhesive tape faces downwards; other electrodes, such as high conductivity composite materials composed of gold, platinum, silver, nickel, copper, carbon nanotubes, graphene, etc. are also possible. The upper substrate 4 is a gauze; other breathable materials such as cotton cloth, polyester cloth, rigid net, etc. can also be used.
The sensitive material 3 can be an organic sensitive material, typically polyaniline, and specifically polyaniline grown on dust-free cloth, and is used for simultaneously detecting pressure and NH with different concentrations3(ii) a Other gas-sensitive semiconductor sensitive materials, such as metal oxide semiconductors or polymer semiconductors, can also be used for detecting other gas components, and a typical metal oxide semiconductor sensitive material is tin oxide.
The dust-free cloth can also be replaced by other flexible materials, such as PDMS, flexible inorganic materials, flexible high polymer materials and the like.
In this embodiment, the lower substrate and the upper substrate mainly function to protect the sensitive material, and do not have to be provided at the same time, and both of them are present, one of them is present, or neither is present after the performance detection, so that the performance of the sensitive material is not greatly affected.
Example 2
As a second preferred embodiment of the present invention, as shown in fig. 2, the present invention further provides a method for preparing the flexible electronic skin capable of sensing pressure and gas simultaneously, which takes polyaniline grown on a dust-free cloth as a sensitive material as an example, and comprises the following steps:
s1, pretreatment of the dust-free cloth: firstly, performing ultrasonic treatment with ethanol for 5-30 minutes, then performing ultrasonic treatment with deionized water for 5-30 minutes, then performing ultrasonic treatment with ethanol for 5-30 minutes, and drying at 40-80 ℃;
s2, aniline treatment before synthesis: aniline monomer is as follows 1: adding the mixture into 1M HCl solution according to the volume ratio of 150-1:200, carrying out ultrasonic treatment for 5-30 minutes, and precooling the mixture for 1-5 hours in a refrigerator at the temperature of 0 ℃;
s3, treatment of ammonium persulfate before synthesis: ammonium persulfate is prepared according to the following steps of 1: mass-to-volume ratio g of 50-1: 100: adding ml of the mixture into 1M HCl solution, carrying out ultrasonic treatment for 5-30 minutes, and precooling the mixture for 1-5 hours in a refrigerator at the temperature of 0 ℃;
s4, synthesis process: dropwise adding an ammonium persulfate solution into an aniline monomer solution at room temperature, then putting a dust-free cloth into the reaction solution, and reacting for 10-40 minutes at 0 ℃;
s5, post-processing: then, taking out the dust-free cloth, washing the dust-free cloth for 3 times by using 1M hydrochloric acid solution and ethanol respectively, and drying the dust-free cloth in an oven at the temperature of between 40 and 80 ℃;
s6, installation process: and finally, sequentially mounting all components of the electronic skin from bottom to top to form the sensor.
The microscopic morphology of the obtained sensitive material 3 is shown in fig. 4 through a unique preparation process, and fig. 4a-b respectively show the surface morphologies of the dust-free cloth fiber under low resolution and high resolution, which indicates that the arrangement of the fiber is stable and ordered. Fig. 4c-d show the surface morphology of polyaniline at low and high resolution, respectively, indicating that the morphology of the resulting polyaniline is stable.
Referring to FIGS. 5-9, I is the real time current, I0Is the baseline current. For the manufactured flexible electronic skin capable of sensing pressure and air sensitivity simultaneously, the pressure response curve is stable and smooth, no obvious fluctuation exists (see figure 5), the repeatability performance under different pressures is excellent, the sensitivity does not change obviously (see figure 6), the repeatability performance under the same pressure and different frequencies is excellent, the sensitivity does not change obviously (see figure 7), the response time and the recovery time of the pressure are short and are respectively 0.4s and 0.2s (see figure 8), the repeated stability performance is excellent, and the sensitivity does not change obviously under 2000-cycle pressure (see figure 9).
Referring to FIGS. 10-12, R is the real time resistance, R0Is the baseline resistance. To the manufactured one capable of sensing pressure simultaneouslyAnd the gas-sensitive flexible electronic skin has good response gradient to sensitive gas (see figure 10), excellent response stability to the sensitive gas (see figure 11) and excellent response selectivity to the sensitive gas (see figure 12).
Referring to FIGS. 13(a-e), R is the real-time resistance, R0Is the baseline resistance. The manufactured flexible electronic skin capable of sensing pressure and gas sensitivity can simultaneously detect the pressure and the gas sensitivity performance (a) of sensitive gas in a data signal without interference. No matter in the preparation period (b), the response early period (c), the response later period (d), the recovery early period (e) and the recovery later period (f) of the gas-sensitive test, the pressure signal has no interference to the whole gas-sensitive signal.
The multifunctional flexible electronic skin is manufactured by a specific manufacturing method after a polyaniline sensitive material grows on dust-free cloth through a unique preparation process, and the sensor is excellent in force testing performance, stable in performance, excellent in gas sensitivity, high in sensitivity, good in repeatability, simple in manufacturing method, simple in material source and low in price.
Example 3
The electronic skin and the preparation process thereof are suitable for organic sensitive materials, inorganic semiconductor materials and wide in application range.
As a third preferred embodiment of the present invention, as shown in fig. 3, the present invention further provides a method for preparing the flexible electronic skin capable of sensing pressure and gas simultaneously, which takes tin oxide grown on a dust-free cloth as an example of a sensitive material, and the polyaniline is replaced by tin oxide in a metal oxide semiconductor material, the method comprising the following steps:
s1, pretreatment of the dust-free cloth: firstly, performing ultrasonic treatment with ethanol for 5-30 minutes, then performing ultrasonic treatment with deionized water for 5-30 minutes, then performing ultrasonic treatment with ethanol for 5-30 minutes, and drying at 40-80 ℃;
s2 SnCl before synthesis2Weighing SnCl2·2H2Dissolving O in distilled water to obtain 0.05ml/L solution, adding NaOH and SnCl2The molar ratio of (1) is 4:1, and the mixture is fully mixed by magnetic stirring for 20 minutes at room temperature;
s3, synthesis process: pouring the prepared solution into a reaction kettle at room temperature, then putting the dust-free cloth into the reaction solution, and reacting for 12-24 hours at 180 ℃;
s4, post-processing: then, taking out the dust-free cloth, washing the dust-free cloth for 3 times by using 1M hydrochloric acid solution and ethanol respectively, and drying the dust-free cloth in an oven at the temperature of between 40 and 80 ℃;
s5, installation process: and finally, sequentially mounting all components of the electronic skin from bottom to top to form the sensor.
Further, the dust-free cloth in the embodiments 2 and 3 may be replaced by other flexible materials, such as PDMS, flexible inorganic materials, flexible polymer materials, etc., and the corresponding process steps may be correspondingly adjusted.
Compared with the prior art, the invention has the advantages that: the same sensor can simultaneously sense pressure and gas sensitivity without interference; meanwhile, the preparation method is simple, the material source is simple, the price is low, the stability of the sensor performance is good, and the sensitivity is high.
The flexible electronic skin capable of sensing pressure and gas simultaneously can be used for detecting physiological signals of a human body, including joint bending, nose wing movement and the like, and can sense sensitive gas in the air like a nose.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A flexible electronic skin capable of sensing pressure and air simultaneously is characterized in that: comprises a lower substrate (1), an upper substrate (4), an electrode (2) and a sensitive material (3);
the conductive electrode (2) is arranged on the lower substrate (1);
the sensitive material (3) is arranged on the electrode (2), and is a gas-sensitive material grown on the flexible attachment layer and used for simultaneously detecting pressure and gas sensitivity; the flexible attachment layer is dust-free cloth, and the gas-sensitive material is tin oxide;
the upper substrate (4) is arranged on the sensitive material (3);
the electronic skin senses pressure stimulation and air-sensitive stimulation simultaneously in one data signal;
the flexible electronic skin capable of sensing pressure and air simultaneously is prepared by the following method, and comprises the following steps:
s1, pretreatment of the dust-free cloth: firstly, performing ultrasonic treatment with ethanol for 5-30 minutes, then performing ultrasonic treatment with deionized water for 5-30 minutes, then performing ultrasonic treatment with ethanol for 5-30 minutes, and drying at 40-80 ℃;
s2 SnCl before synthesis2Weighing SnCl2·2H2Dissolving O in distilled water to obtain 0.05ml/L solution, adding NaOH and SnCl2The molar ratio of (1) is 4:1, and the mixture is fully mixed by magnetic stirring for 20 minutes at room temperature;
s3, synthesis process: pouring the prepared solution into a reaction kettle at room temperature, then putting the dust-free cloth into the reaction solution, and reacting for 12-24 hours at 180 ℃;
s4, post-processing: then, taking out the dust-free cloth, washing the dust-free cloth for 3 times by using 1M hydrochloric acid solution and ethanol respectively, and drying the dust-free cloth in an oven at the temperature of between 40 and 80 ℃;
s5, installation process: and finally, sequentially mounting all components of the electronic skin from bottom to top to form the sensor.
2. The flexible, pressure-and gas-sensitive electronic skin sensing system of claim 1, wherein: the dust-free arrangement is exchanged for another flexible material comprising one of PDMS, a flexible inorganic material, a flexible polymer material.
3. The flexible, pressure-and gas-sensitive electronic skin sensing system of claim 1, wherein: the lower substrate (1) is a breathable non-woven adhesive tape, and the bonding surface of the lower substrate faces upwards;
or the lower substrate (1) is made of other breathable materials which do not affect the function of the sensor and comprise one of cotton cloth, polyester fabric and rigid net or the combination of the cotton cloth, the polyester fabric and the rigid net.
4. The flexible, pressure-and gas-sensitive electronic skin sensing system of claim 1, wherein: the electrode (2) is a conductive adhesive tape, and the bonding surface of the conductive adhesive tape faces downwards;
or the electrode is a high-conductivity composite material formed by randomly combining gold, platinum, silver, nickel, copper, carbon nano tubes and graphene.
5. The flexible, pressure-and gas-sensitive electronic skin sensing system of claim 1, wherein: the upper substrate (4) is a piece of gauze;
or the upper substrate (4) is made of other breathable materials which do not affect the function of the sensor and comprise one of cotton cloth, polyester fabric and rigid net or the combination of the cotton cloth, the polyester fabric and the rigid net.
6. A preparation method of flexible electronic skin capable of sensing pressure and air sensitivity simultaneously is characterized by comprising the following steps:
s1, pretreatment of the dust-free cloth: firstly, performing ultrasonic treatment with ethanol for 5-30 minutes, then performing ultrasonic treatment with deionized water for 5-30 minutes, then performing ultrasonic treatment with ethanol for 5-30 minutes, and drying at 40-80 ℃;
s2 SnCl before synthesis2Weighing SnCl2·2H2Dissolving O in distilled water to obtain 0.05ml/L solution, adding NaOH and SnCl2The molar ratio of (1) is 4:1, and the mixture is fully mixed by magnetic stirring for 20 minutes at room temperature;
s3, synthesis process: pouring the prepared solution into a reaction kettle at room temperature, then putting the dust-free cloth into the reaction solution, and reacting for 12-24 hours at 180 ℃;
s4, post-processing: then, taking out the dust-free cloth, washing the dust-free cloth for 3 times by using 1M hydrochloric acid solution and ethanol respectively, and drying the dust-free cloth in an oven at the temperature of between 40 and 80 ℃;
s5, installation process: finally, all components of the electronic skin are sequentially installed from bottom to top to form a sensor; wherein the electronic skin comprises a lower substrate (1), an upper substrate (4), an electrode (2) and a sensitive material (3); the conductive electrode (2) is arranged on the lower substrate (1); the sensitive material (3) is arranged on the electrode (2), and is tin oxide which is grown on the prepared dust-free cloth as a flexible attachment layer and is used as a gas-sensitive material, and is used for simultaneously detecting pressure and gas sensitivity; the upper substrate (4) is arranged on the sensitive material (3); the electronic skin senses both pressure stimuli and air-sensitive stimuli in one data signal.
7. The method for preparing flexible electronic skin capable of sensing pressure and gas simultaneously according to claim 6, wherein the method comprises the following steps: the dust-free arrangement is exchanged for another flexible material comprising one of PDMS, a flexible inorganic material, a flexible polymer material.
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| CN110285898B (en) * | 2019-08-06 | 2020-04-24 | 清华大学 | Flexible pressure sensing device based on carbon black dust-free paper and manufacturing method thereof |
| CN110763580B (en) * | 2019-10-09 | 2021-03-26 | 华中科技大学 | 360-degree multi-directional synchronous stretching equipment and method for flexible device |
| CN112212898B (en) * | 2020-09-09 | 2022-05-27 | 山东科技大学 | Intelligent skin based on small-size distributed optical fiber sensing array |
| CN113232031A (en) * | 2021-01-20 | 2021-08-10 | 北京航空航天大学 | Novel electronic skin with adjustable pressure sensing range |
| CN113776709B (en) * | 2021-08-09 | 2023-10-13 | 济南大学 | Dual-mode flexible touch sensor and preparation method and application thereof |
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| CN108593167B (en) | 2019-12-24 |
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