CN107941386A - Flexible force-touch sensor, sensing element based on transparent organism material and preparation method thereof - Google Patents
Flexible force-touch sensor, sensing element based on transparent organism material and preparation method thereof Download PDFInfo
- Publication number
- CN107941386A CN107941386A CN201810020358.9A CN201810020358A CN107941386A CN 107941386 A CN107941386 A CN 107941386A CN 201810020358 A CN201810020358 A CN 201810020358A CN 107941386 A CN107941386 A CN 107941386A
- Authority
- CN
- China
- Prior art keywords
- pdms
- touch sensor
- hydrogel
- flexible force
- sensing element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
Abstract
The invention belongs to field of sensing technologies, more particularly to a kind of flexible force-touch sensor based on transparent organism material, sensing element and preparation method thereof, sensing element includes water conservation layer substrate and the hydrogel that is wrapped in it, and the solute of the hydrogel is by sodium alginate, calcium disodium chelate and glucono-delta-lactone with mass ratio 2:(0.5~1.5):(0.5~1.5) form, wherein the mass concentration of sodium alginate is 2~6%.Sensor includes the sensing element of wired or wireless connection, measuring circuit, A/D convertor circuit and display successively.The slow-releasing system hydrogel of the present invention by the use of ionomer is used as sensor main body, the calcium ion in calcium disodium chelate is slowly discharged using glucolactone, calcium ion forms ionomer with sodium alginate monomer, hydrone is connected to inside net structure, recycle certain Water-retaining Measure, distributing for moisture is reduced, maintains the stability of sensor.
Description
Technical field
The invention belongs to field of sensing technologies, and in particular to a kind of flexible force tactile sensing based on transparent organism material
Device, sensing element and preparation method thereof.
Background technology
The research of human-computer interaction is for improving the information exchange between computer system " friendly property ", simplified people and computer
Process is of great significance.For now, the interactive mode of man-machine integration becomes prevailing model.It is preferable to realize
Man-machine integration interactive mode, touch sensor are required flexibility and the biocompatibility for possessing higher.Therefore, it is proposed that
A kind of electronic skin Study of Touch Sensor based on hydrogel.High-flexibility that hydrogel has, high-biocompatibility pair
Realize that man-machine integration interaction is of great significance.
The touch sensor of mainstream is manufactured based on hard electrode at present, can not adapt to the interactive mode of man-machine integration.
This touch sensor the strong position of mobility using when repeated deformation, this often lead to touch sensor measurement essence
Degree and service life significantly reduce.Current flexible touch sensation sensor lacks consideration for the stability of circuit connection, and circuit connects
Mouth or the region for being located at touch sensor repeated deformation, do not carry out relevant design protection；Corresponding sensing unit at the same time
Also because employing the also jejune flexible material of performance, make the measurement accuracy of touch sensor also relatively low.
Patent " the flexible 3 D force tactile sensing of plum great waves of Hefei Intelligent Machinery Inst., Chinese Academy of Scineces et al. application
Device ", Publication No. CN1796954, which uses MEMS technology when making, overall to have certain flexibility, Ke Yijian
Survey three-dimensional force.But the size sensor is larger, processing technology is complicated, lacks highly flexible, it is impossible to meets the need of man-machine integration
Ask.And signal acquisition circuit is not proposed in patent, the application of the performance and size of signal acquisition circuit to sensor has very big
Influence.
The patent " touch sensor based on flexible pressure-sensitive conductive rubber " of yellow English of HeFei University of Technology et al. application, it is public
The number of opening is CN101231200, which uses pressure-sensitive conductive rubber, and sensor integrally has highly flexible, can detect three
Tie up power.But the sensor uses single-layer electrodes Rotating fields, sensor is influenced single haptic unit by electrode contact surface product
Size is restricted, and is not suitable for disabled person's artifucial limb application；Pressure-sensitive conductive rubber has high lagging characteristics, poor linearity, its essence
Degree and resolution ratio need to be further improved.
Notification number is CN101059380A, patent name is " a kind of production method of flexible capacitance type touch sensor "
Patent, using PDMS intermediate layers, prepares flexibility PI substrates, patterned metal sensitive electrodes and PI insulating protective layers, realizes
Organic flexible material is compatible with traditional MEMS technique, and made capacitance type touch sensor pliability is good, can experience at the same time
The size of tangential force and normal force；However, since the sensor sensing electrode still uses Al or Cr/Au metallic films, pasted
Subordinate list face curvature can cause large error when larger because of the elastic modulus difference of electrode and medium, also be not implemented really complete soft
Property.
The content of the invention
It is an object of the present invention to it is in view of the above-mentioned drawbacks of the prior art and insufficient, improve traditional touch sensor
The problems such as flexible degree is not high, service life is low and precision is not high, proposes a kind of electronic skin sensor based on hydrogel
Design.Using hydrogel high flexibility, easily prepare, the touch sensor produced of the characteristics of biocompatibility is high solves above-mentioned ask
Topic.
The present invention is achieved by the following technical solutions：
The sensing element of flexible force-touch sensor based on transparent organism material, including water conservation layer substrate and it is wrapped in it
Interior hydrogel, the solute of the hydrogel is by sodium alginate, calcium disodium chelate and gluconic acid delta-lactone with matter
Measure ratio 2:(0.5~1.5):(0.5~1.5) form, wherein the mass concentration of sodium alginate is 2~6%.
Preferably, the hydrogel S-type arrangement in water conservation layer.
Preferably, the water conservation layer is made of PDMS.PDMS is a kind of organosilicon with different polymerization degree chain structure
Oxygen alkane mixture, is a kind of nontoxic inert substance, has very high hydrophobicity and water proofing property, hydrogel can be helped effectively to lock
Water and prevent moisture from distributing.The processing procedure of PDMS is easy and quick, and the cost of material is low, and its translucency is good, biocompatibility is good,
Easily engaged with various material room temperature, meanwhile, there is the structure high resiliency caused by low Young's modulus, be highly suitable as hydrogel
Water-keeping material.
The method for preparing the sensing element of the flexible force-touch sensor based on transparent organism material, including it is following
Step：
(1) PDMS water conservation layers are prepared：PDMS and curing agent are mixed in proportion, conjunction is made in mixture using mould
Suitable shape, hot briquetting；
(2) hydrogel is prepared：Sodium alginate and calcium disodium chelate, centrifugal mixer are added in deionized water；
Gluconic acid delta-lactone is added in colloid after mixing, centrifugal mixer, is uniformly mixed it；
(3) PDMS- hydrogels-PDMS shaping structures：By the water-setting micelle colloid configured by 3D printer print to through
Preparing on molding PDMS water conservations layer after UV treatment, stands under certain temperature and humidity, then another is equally passed through
PDMS water conservations layer covering after UV treatment thereon, then is stood under certain temperature and humidity.
Preferably, the mass ratio of step (1) PDMS and curing agent is 10:1.
Preferably, the mixing of step (1) PDMS and curing agent is to stir 10 points in centrifuge with 1500RPM rotating speeds
Clock.
Preferably, the temperature control of step (1) described hot briquetting is at 45~60 DEG C.Temperature is excessive to make PDMS water conservation layers
Hardness is excessive, and flex capability reduces；The solidification effect that temperature is too low to make PDMS water conservation layers is poor.
Preferably, the rotating speed of step (2) described centrifugal mixer is 1000RPM.
Preferably, the centrifugal mixer time control after step (2) addition gluconic acid delta-lactone was at 1~2 minute.During stirring
Between the long homogeneity and stability that can reduce sensor sensing element, and mixing time is too short can make sodium alginate, ethylenediamine
The mixing of tetraacethyl disodium calcium and gluconic acid delta-lactone is uneven.
Preferably, step (3) described UV treatment is that PDMS water conservations layer is exposed to the ultraviolet lamp of 200W, 365nm
It is lower irradiation 1~3 it is small when.The too short hydrophilicity that can make PDMS water conservation layers of irradiation time is deteriorated, and irradiation time is long to make
Water conservation layer surface produces cracking.
Preferably, temperature during step (3) described 3D printing is 25 DEG C, is printed after 25 DEG C of temperature, air humidity 90%
In the environment of stand 5 it is small when.
Preferably, after step (3) the PDMS water conservations layer covering thereon by another equally after UV treatment
Processing mode is when standing 2 is small in the environment of temperature 50 C, air humidity 90%.
Present invention also offers the sensor being made of above-mentioned sensing element, including the sensitivity of wired or wireless connection successively
Element, measuring circuit, A/D convertor circuit and display.
Slow-releasing system hydrogel of the invention by the use of ionomer is slow using glucolactone as sensor main body
The calcium ion in calcium disodium chelate is discharged, calcium ion forms ionomer with sodium alginate monomer, hydrone is connected
It is connected on inside net structure, recycles certain Water-retaining Measure (two layers of PDMS wraps hydrogel), reduce the evaporation of moisture, thoroughly
Bright PDMS will not influence the high light transmittance of hydrogel, maintain the stabilization of sensor performance and function.Special sustained release
System ensure that the uniform of hydrogel quality, significantly reduce influence of the sensor itself to measurement result.Meanwhile decrease
Difference between Different Individual hydrogel.The making at Sensor core position (hydrogel) uses 3D printing technique, with traditional water
Gel forming is compared using the method for mould, and 3D printing technique makes that hydrogel is more convenient, save time for making mould and
Cost.Meanwhile the hydrogel form that can be produced using 3D printing technique is more various, disclosure satisfy that different demands.3D is beaten
Print is to use extruded type 3D printer, is completed using accurate alignment system and hydrogel extrusion system.Whole 3D printing system
It is placed under the higher environment of relative humidity, it is accurate to control gas output speed, output quantity, and then accurately control extrusion
The width of hydrogel.
It is of the invention compared with existing touch sensing device, have the following advantages：
(1) pressure change image intuitively is provided, mechanical analysis is carried out beneficial to pressure.
(2) biocompatibility is high, adapts to man-machine integration pattern.
(3) pliability is high, and repeated deformation does not influence function.
(4) environmentally friendly material, raw material sources are extensive, and cost is low.
(5) image reconstruction procedure is cost-effective only by the i.e. achievable control of microcontroller without complicated calculating inverting.
Brief description of the drawings
Fig. 1 is PDMS- hydrogels-PDMS shaping structures preparation process figures of the present invention；Wherein：1-PDMS water conservation layers, 2- water
Gel.
Fig. 2 is subject hydrogel sensor electric property figure.
Fig. 3 is operating diagram of the inventive sensor on arm；Wherein：10- sensing elements, 20- bridge measurements electricity
Road, 30-AD conversion circuits, 40- displays.
Fig. 4 is operating diagram of the inventive sensor on finger tip.
Fig. 5 is operating diagram of the inventive sensor on the manipulator of robot.
Embodiment
To be best understood from the present invention, with reference to embodiment and attached drawing, the invention will be further described, following embodiments
Only it is that the present invention will be described rather than it is limited.
The preparation of 1 sensing element of embodiment
1) prepared by PDMS
1>By PDMS and curing agent (Sylgard 184silicone elastomer, Dow Corning) in proportion (10：
1) after mixing, it is placed in centrifugal blender, is stirred 10 minutes with the rotating speed of 1500RPM, is uniformly mixed it.
2>PDMS after stirring is poured in photoresist spinner mould, is rotated 3 minutes with the rotating speed of 150RPM, it is uniformly put down
Paving.
3>Evenly laid out PDMS is placed on warm table, its shaping is treated when small with 50 DEG C of temperature heating 2.
2) prepared by water-setting micelle colloid
1>0.4g sodium alginates (Sodium alginate) and 0.2g ethylenediamine tetra-acetic acids are added in 10ml deionized waters
Calcium disodium (Ethylenediamine tetra acetic acid calcium Disodium salt hydrate), is placed in
In centrifugal blender, stirred 10 minutes with the rotating speed of 1000RPM, be uniformly mixed it.
2>0.2g gluconic acid delta-lactones are added in colloid after mixing, are placed in centrifugal blender, with
The rotating speed of 1000RPM stirs 2 minutes, is uniformly mixed it.
2) PDMS- hydrogels-PDMS shaping structures
As shown in Figure 1,
1>To prepare molding PDMS under the ultraviolet lamp (200W, 365nm) 2 it is small when, to improve the parent of hydrogel
It is water-based.
2>The water-setting micelle colloid configured is placed in syringe, is loaded at 3D printer Bit andits control.Utilize air pressure control
Water-setting micelle colloid extrusion rate processed, using temperature control water loop control print platform temperature (25 DEG C), is existed with predetermined graphic printing
On PDMS, when standing 5 is small in the environment of 25 DEG C of temperature, air humidity 90%.
3>The PDMS of another ultraviolet processing of process is covered on the PDMS for being printed with hydrogel, in temperature 50 C, sky
When standing 2 is small in the environment of air humidity degree 90%.
It will be placed in by hydrogel sensor prepared by this experiment and exposed hydrogel sensor under same environment.One section
After time, by contrast, the hydrogel sensor stability wrapped by PDMS is more preferable, can effectively keep water content.
Hydrogel tactile sensing implement body testing principle is as follows：Sensor sensing position is subject to extraneous extruding to cause resistance
Change, in the presence of there is excitation at sensor both ends, shows as current values change.It is passed through frequency 1.0kHz, swarming value 300mVppHand over
Galvanic electricity, when sensor sensing portion faces bear pressure, significant changes occur for sensor resistance, and pressure size is different, will lead
Different resistance variations are caused, as shown in Fig. 2, hydrogel sensor increases (0N to 1N) with pressure, it is in line that resistance change, which increases,
The characteristic of property.According to the current data collected, it is possible to carry out Real-time image display to whole pressure change process.
2 sensor application of embodiment is on the arm of people
As shown in figure 3, by the hand of the present invention that people is installed on based on transparent organism material flexibility force-touch sensor
On arm, sensing element 10 is attached at arm, and successively using wired connection bridge measuring circuit 20, A/D convertor circuit 30 and display
Device 40.Diagram sensor is in bridge circuit, and the sensor change that is stressed causes resistance change, so as to cause bridge circuit
Output voltage changes, and after amplifying by amplifier, utilizes microcontroller recording voltage signal.
3 sensor application of embodiment is on the finger tip of people
Fig. 4 illustrates the sensor and realizes wireless tactile measurement.The flexible sensor principle is printed by high-precision three-dimensional,
Very little scope can equally be acted on and realize that tactile measures, such as finger tip.Meanwhile using wireless transmit-receive technology, which can be with
Realize wireless signal transmission.Microcontroller is recorded sensor by the resistance value that power changes by electric bridge, passes through wireless module
Launched；Host computer is received and shown by wireless module, records haptic signal.
4 sensor application of embodiment is on the manipulator of robot
As shown in figure 5, sensor of the invention can be equally arranged on the manipulator of robot, according to the big of manipulator
It is small, multiple sensor sensing elements can be set, the environment of flexibility is provided for machine-people's interbehavior.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
Enclose and be defined, on the premise of design spirit of the present invention is not departed from, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made, should all fall into the protection domain that claims of the present invention determines.
Claims (10)
1. the sensing element of the flexible force-touch sensor based on transparent organism material, it is characterised in that：Including water conservation layer substrate
And the hydrogel in it is wrapped in, the solute of the hydrogel is by sodium alginate, calcium disodium chelate and gluconic acid
Delta-lactone is with mass ratio 2:(0.5~1.5):(0.5~1.5) form, wherein the mass concentration of sodium alginate is 2~6%.
2. the sensing element of the flexible force-touch sensor according to claim 1 based on transparent organism material, its feature
It is：The hydrogel S-type arrangement in water conservation layer.
3. the sensing element of the flexible force-touch sensor according to claim 1 or 2 based on transparent organism material, it is special
Sign is：The water conservation layer is made of PDMS.
4. prepare the sensitivity member of flexible force-touch sensor of the claims 1 to 3 any one of them based on transparent organism material
The method of part, it is characterised in that comprise the following steps：
(1) PDMS water conservation layers are prepared：PDMS and curing agent are mixed in proportion, mixture is made suitably using mould
Shape, hot briquetting；
(2) hydrogel is prepared：Sodium alginate and calcium disodium chelate, centrifugal mixer are added in deionized water；Mixed
Gluconic acid delta-lactone is added in colloid after closing uniformly, centrifugal mixer, is uniformly mixed it；
(3) PDMS- hydrogels-PDMS shaping structures：The water-setting micelle colloid configured is printed to through ultraviolet by 3D printer
Preparing on molding PDMS water conservations layer after line processing, stands under certain temperature and humidity, then by another equally through ultraviolet
PDMS water conservations layer covering after line processing thereon, then is stood under certain temperature and humidity.
5. the preparation method of the flexible force-touch sensor according to claim 4 based on transparent organism material, its feature
It is：The mass ratio of step (1) PDMS and curing agent is 10:1, the two mixing is with 1500RPM rotating speeds in centrifuge
Stirring 10 minutes；The temperature control of hot briquetting is at 45~60 DEG C.
6. the preparation method of the flexible force-touch sensor according to claim 4 based on transparent organism material, its feature
It is：The rotating speed of step (2) described centrifugal mixer is 1000RPM；Add the centrifugal mixer time control after gluconic acid delta-lactone
System was at 1~2 minute.
7. the preparation method of the flexible force-touch sensor according to claim 4 based on transparent organism material, its feature
It is：Step (3) described UV treatment is that PDMS water conservations layer is irradiated 1~3 under the ultraviolet lamp of 200W, 365nm
Hour.
8. the preparation method of the flexible force-touch sensor according to claim 4 based on transparent organism material, its feature
It is：Temperature during step (3) described 3D printing is 25 DEG C, is printed quiet in the environment of 25 DEG C of temperature, air humidity 90%
Put 5 it is small when.
9. the preparation method of the flexible force-touch sensor according to claim 4 based on transparent organism material, its feature
It is：Step (3) it is described by another equally after UV treatment PDMS water conservations layer covering thereon after processing mode be
When standing 2 is small in the environment of temperature 50 C, air humidity 90%.
What 10. the flexible force-touch sensor sensing element based on any one of claims 1 to 3 transparent organism material was formed
Sensor, it is characterised in that：Including the sensing element of wired or wireless connection, measuring circuit, A/D convertor circuit and display successively
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810020358.9A CN107941386B (en) | 2018-01-09 | 2018-01-09 | Flexible force touch sensor based on transparent biological material, sensitive element and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810020358.9A CN107941386B (en) | 2018-01-09 | 2018-01-09 | Flexible force touch sensor based on transparent biological material, sensitive element and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107941386A true CN107941386A (en) | 2018-04-20 |
| CN107941386B CN107941386B (en) | 2020-06-12 |
Family
ID=61937548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810020358.9A Active CN107941386B (en) | 2018-01-09 | 2018-01-09 | Flexible force touch sensor based on transparent biological material, sensitive element and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107941386B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334173A (en) * | 2018-10-17 | 2019-02-15 | 燕山大学 | A kind of water-keeping gel material and preparation method thereof |
| CN110031143A (en) * | 2019-05-22 | 2019-07-19 | 浙江大学滨海产业技术研究院 | A kind of conductive rubber formula multi information touch sensor |
| CN110849513A (en) * | 2019-11-20 | 2020-02-28 | 哈尔滨工业大学 | Preparation process of flexible biomass-based pressure sensor capable of being produced in large scale |
| CN111913571A (en) * | 2020-06-22 | 2020-11-10 | 西安交通大学 | Flexible material 3D prints fingertip tactile feedback executor |
| CN111904409A (en) * | 2020-06-11 | 2020-11-10 | 西安交通大学医学院第一附属医院 | Flexible sensor for electrocardio monitoring and hydrogel flexible electrocardio monitor |
| CN111947814A (en) * | 2020-08-11 | 2020-11-17 | 上海海事大学 | Flexible three-dimensional touch sensor and manufacturing and detecting methods thereof |
| CN110608842B (en) * | 2018-06-15 | 2021-07-02 | 苹果公司 | Water detection pressure sensor |
| CN113503991A (en) * | 2021-04-12 | 2021-10-15 | 浙江大学 | High-sensitivity piezoresistive sensor based on dopamine-modified polypyrrole conductive hydrogel and preparation method thereof |
| CN114133469A (en) * | 2021-11-16 | 2022-03-04 | 西湖大学 | Manufacturing method of 3D printing hydrogel electronic device and conductive material |
| CN114323359A (en) * | 2021-12-28 | 2022-04-12 | 南京大学 | Flexible wearable touch sensor and preparation method thereof |
| CN114605712A (en) * | 2020-12-09 | 2022-06-10 | 中国科学院宁波材料技术与工程研究所慈溪生物医学工程研究所 | Pre-polymerized liquid, biocompatible conductive hydrogel and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137338A (en) * | 2003-12-03 | 2008-03-05 | 眼睛光学技术公司 | Hybrid accommodating intraocular lens |
| CN104869946A (en) * | 2012-12-21 | 2015-08-26 | 诺华股份有限公司 | Curvature changing accommodative intraocular lens |
| CN105658177A (en) * | 2013-09-24 | 2016-06-08 | J·S·卡明 | Anterior capsule deflector ridge |
| CN107139447A (en) * | 2017-05-12 | 2017-09-08 | 安徽大学 | A kind of method of 3D printer and 3D printing Sodium Alginate Hydrogel Films |
| CN107209279A (en) * | 2014-12-03 | 2017-09-26 | 不列颠哥伦比亚大学 | Flexible and transparent sensor with ion conductive material |
| CN107320791A (en) * | 2012-03-12 | 2017-11-07 | 史密夫及内修公开有限公司 | Wound dressing apparatus for reduced pressure wound therapy |
-
2018
- 2018-01-09 CN CN201810020358.9A patent/CN107941386B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101137338A (en) * | 2003-12-03 | 2008-03-05 | 眼睛光学技术公司 | Hybrid accommodating intraocular lens |
| CN107320791A (en) * | 2012-03-12 | 2017-11-07 | 史密夫及内修公开有限公司 | Wound dressing apparatus for reduced pressure wound therapy |
| CN104869946A (en) * | 2012-12-21 | 2015-08-26 | 诺华股份有限公司 | Curvature changing accommodative intraocular lens |
| CN105658177A (en) * | 2013-09-24 | 2016-06-08 | J·S·卡明 | Anterior capsule deflector ridge |
| CN107209279A (en) * | 2014-12-03 | 2017-09-26 | 不列颠哥伦比亚大学 | Flexible and transparent sensor with ion conductive material |
| CN107139447A (en) * | 2017-05-12 | 2017-09-08 | 安徽大学 | A kind of method of 3D printer and 3D printing Sodium Alginate Hydrogel Films |
Non-Patent Citations (1)
| Title |
|---|
| 廖华: "聚糖醛酸与钙离子的络合机理及其凝胶化调控", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608842B (en) * | 2018-06-15 | 2021-07-02 | 苹果公司 | Water detection pressure sensor |
| US11525752B2 (en) | 2018-06-15 | 2022-12-13 | Apple Inc. | Water detecting pressure sensors |
| CN109334173A (en) * | 2018-10-17 | 2019-02-15 | 燕山大学 | A kind of water-keeping gel material and preparation method thereof |
| CN110031143A (en) * | 2019-05-22 | 2019-07-19 | 浙江大学滨海产业技术研究院 | A kind of conductive rubber formula multi information touch sensor |
| CN110849513B (en) * | 2019-11-20 | 2021-12-28 | 哈尔滨工业大学 | Preparation process of flexible biomass-based pressure sensor capable of being produced in large scale |
| CN110849513A (en) * | 2019-11-20 | 2020-02-28 | 哈尔滨工业大学 | Preparation process of flexible biomass-based pressure sensor capable of being produced in large scale |
| CN111904409A (en) * | 2020-06-11 | 2020-11-10 | 西安交通大学医学院第一附属医院 | Flexible sensor for electrocardio monitoring and hydrogel flexible electrocardio monitor |
| CN111913571A (en) * | 2020-06-22 | 2020-11-10 | 西安交通大学 | Flexible material 3D prints fingertip tactile feedback executor |
| CN111947814A (en) * | 2020-08-11 | 2020-11-17 | 上海海事大学 | Flexible three-dimensional touch sensor and manufacturing and detecting methods thereof |
| CN111947814B (en) * | 2020-08-11 | 2021-12-17 | 上海海事大学 | Flexible three-dimensional touch sensor and manufacturing and detecting methods thereof |
| CN114605712A (en) * | 2020-12-09 | 2022-06-10 | 中国科学院宁波材料技术与工程研究所慈溪生物医学工程研究所 | Pre-polymerized liquid, biocompatible conductive hydrogel and preparation method thereof |
| CN114605712B (en) * | 2020-12-09 | 2024-01-19 | 中国科学院宁波材料技术与工程研究所慈溪生物医学工程研究所 | Pre-polymerized liquid, biocompatible conductive hydrogel and preparation method thereof |
| CN113503991A (en) * | 2021-04-12 | 2021-10-15 | 浙江大学 | High-sensitivity piezoresistive sensor based on dopamine-modified polypyrrole conductive hydrogel and preparation method thereof |
| CN114133469A (en) * | 2021-11-16 | 2022-03-04 | 西湖大学 | Manufacturing method of 3D printing hydrogel electronic device and conductive material |
| CN114323359A (en) * | 2021-12-28 | 2022-04-12 | 南京大学 | Flexible wearable touch sensor and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107941386B (en) | 2020-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107941386A (en) | Flexible force-touch sensor, sensing element based on transparent organism material and preparation method thereof | |
| CN110243276A (en) | A kind of stretchable stress strain gauge and preparation method applied to articulations digitorum manus | |
| CN108267078B (en) | Flexible wearable resistance-type strain sensor and preparation method thereof | |
| CN107478148B (en) | Flexible wearable electronic strain sensor and preparation method thereof | |
| CN106197774B (en) | Flexible piezoresistive tactile sensor array and preparation method thereof | |
| CN102604387B (en) | Anisotropic conductive rubber and preparation method thereof | |
| Liu et al. | Electronic skin from high-throughput fabrication of intrinsically stretchable lead zirconate titanate elastomer | |
| CN106959176B (en) | A kind of pliable pressure sensor and preparation method thereof | |
| CN111693189B (en) | Novel flexible force-sensitive sensor and preparation method thereof | |
| Palaniappan et al. | Laser-assisted fabrication of flexible micro-structured pressure sensor for low pressure applications | |
| CN110068397A (en) | A kind of flexibility body temperature transducer and preparation method thereof | |
| CN113310395B (en) | Microcrack strain sensing element and preparation method and application thereof | |
| CN110346079A (en) | Capacitive pliable pressure sensor based on prestretching and its preparation method and application | |
| US20230158822A1 (en) | Method of fabricating metasurface on skin for blood glucose detection | |
| CN110057476A (en) | A kind of multi signal response flexible electronic skin and preparation method thereof | |
| Zhang et al. | A soft intelligent dressing with pH and temperature sensors for early detection of wound infection | |
| CN105509937B (en) | A kind of pressure sensor, pressure detection method and manufacturing process | |
| CN101914290A (en) | Sensitive material for tensile deformation test and preparation method thereof | |
| CN108461624A (en) | The bionical finger tip Touch-Pressure of silica gel feels Sensitive Apparatus | |
| CN107830877A (en) | A kind of piezoelectric film sensor of oval flexible substrates | |
| CN108627267A (en) | A kind of temperature sensor based on nano silver wire network | |
| CN110849510B (en) | Preparation method and application of pressure stress sensor | |
| CN112034018A (en) | Glucose biosensor based on PDMS microfluidic channel, preparation method and application | |
| Chang | A wearable electronic based on flexible pressure sensor for running motion monitoring | |
| CN113514996B (en) | Electrochromic visual pressure sensor and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |