CN117091492A - 3D three-dimensional structure joint sensor - Google Patents
3D three-dimensional structure joint sensor Download PDFInfo
- Publication number
- CN117091492A CN117091492A CN202311044398.4A CN202311044398A CN117091492A CN 117091492 A CN117091492 A CN 117091492A CN 202311044398 A CN202311044398 A CN 202311044398A CN 117091492 A CN117091492 A CN 117091492A
- Authority
- CN
- China
- Prior art keywords
- joint sensor
- laser
- sensor
- dimensional structure
- stereoscopic
- 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.)
- Pending
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 36
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000010008 shearing Methods 0.000 claims description 18
- 239000004642 Polyimide Substances 0.000 claims description 13
- 229920001721 polyimide Polymers 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 230000005057 finger movement Effects 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 4
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 4
- 239000004697 Polyetherimide Substances 0.000 claims description 4
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 4
- 239000005011 phenolic resin Substances 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 4
- 229920002530 polyetherether ketone Polymers 0.000 claims description 4
- 229920001601 polyetherimide Polymers 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 229920012266 Poly(ether sulfone) PES Polymers 0.000 claims description 2
- 239000011664 nicotinic acid Substances 0.000 claims description 2
- -1 polydimethylsiloxane Polymers 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 239000000084 colloidal system Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 230000004044 response Effects 0.000 description 12
- 230000003287 optical effect Effects 0.000 description 9
- 238000005452 bending Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 125000004122 cyclic group Chemical group 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000003993 interaction Effects 0.000 description 5
- 238000003698 laser cutting Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000013473 artificial intelligence Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 210000003414 extremity Anatomy 0.000 description 2
- 210000001145 finger joint Anatomy 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 210000000629 knee joint Anatomy 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 210000000544 articulatio talocruralis Anatomy 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000008921 facial expression Effects 0.000 description 1
- 210000002478 hand joint Anatomy 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention discloses a 3D three-dimensional structure joint sensor and a preparation method thereof, wherein the sensor comprises a laser-induced graphene sensitive element, the laser-induced graphene sensitive element is a circular discretized cutting unit, a wire is connected with two ends of the graphene sensitive element through silver colloid, the sensor has excellent flexibility and biocompatibility, can be used for measuring physiological signals of human fingers, and has the advantages of strong wearability, high following performance, simple manufacturing process and the like.
Description
Technical Field
The invention relates to the field of sensors, in particular to a joint sensor with a 3D (three-dimensional) structure.
Background
In order to obtain information from the outside, people must resort to the sense organs. The sensor is created for strengthening and researching natural phenomena and rules and perception activities during production activities. With the development of intelligent terminals, the requirements of people on intelligent environments are continuously improved, and the high-performance flexible sensor is one of the popular electronic sensors. Besides the continuous mapping function, the flexible sensor has the characteristics of high sensitivity, good flexibility, simple manufacturing process and the like, has actual and potential application in the aspects of temperature and pulse detection, facial expression recognition, motion monitoring and the like, and is widely applied to the emerging fields of wearable equipment, medical care, soft robots, human-computer interaction and the like.
However, most wearable devices based on flexible strain sensors still have the freedom degree limited in a two-dimensional plane when worn on a human body, lack of programmability, and are still fixed by an adhesive tape, which further restricts the application of the wearable devices in the wearable and man-machine interaction fields. The further structural design of the flexible strain sensor is an important way to improve its sensing, wearable and interactive performance. For example, a two-dimensional planar shape material is expanded into a 3D shape through a proper mode (folding, bending and cutting), and a material with a programmable shape is constructed to endow the material with special performance, so that the material has wider attraction in the fields of intelligent wearable sensing, programmable machines, artificial intelligence, functional biomedical equipment and the like.
Development of improved tactile sensors in the wearable and human-computer interaction fields is a current need for solving the problem.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the 3D three-dimensional structure joint sensor, the LIG material with the 2D planar structure is flexibly expanded to 3D through a simple laser cutting process, and the 3D three-dimensional structure joint sensor provides omnibearing multifunctional intelligent wearable application for human finger detection and has the advantages of strong wearability, high following performance, simple manufacturing process and the like.
Technical proposal
A3D three-dimensional structure joint sensor and a preparation method thereof are characterized in that: and carrying out laser-induced patterning on the PI film, and then carrying out laser secondary shearing to obtain the 3D three-dimensional structure joint sensor.
The method comprises the following steps:
step one, preparing circular laser-induced graphene: and preparing the patterned laser-induced graphene on the substrate film by using an ultraviolet laser to prepare the circular laser-induced graphene.
Step two, circular laser induced graphene is cut again: and shearing the round laser-induced graphene by secondary shearing of laser in a primary marking cutting mode, dividing the round into a plurality of parallel discrete units, and obtaining the 3D three-dimensional structure joint sensor.
Preferably, the shape of the patterned laser-induced graphene in the first step is a circle with the diameter of 15-25 mm;
preferably, the material of the base film is selected from one of Polyimide (PI), phenolic Resin (PR), polydimethylsiloxane (PDMS), polyether Ether Ketone (PEEK), polyetherimide (PEI), polyethersulfone (PES).
Preferably, the parameters of the ultraviolet laser in the first step are as follows: the pulse wave frequency is 100-140 kHz, the pulse width is 1-4 mu s, the scanning speed is set to 15-45 mm/s, and the scanning interval is 0.005-0.02 mm;
preferably, in the second step, the shearing mode is a mode perpendicular to the laser-induced direction, and the cutting pitch is 0.1-10 mm. Meanwhile, the laser cutting parameters are that the pulse wave frequency is 15-25 kHz, the Q pulse width is 0.3-0.7 mu s, and the scanning speed is set to be 10-30 mm/s.
Furthermore, the invention also provides a 3D three-dimensional structure joint sensor, and the 3D three-dimensional structure joint sensor is prepared by the preparation method.
Furthermore, the invention also provides an application of the joint sensor with the 3D structure, wherein three-dimensional expansion can be realized by cutting the graphene in a plane by one-step laser, and the joint sensor can be ideally attached to each part of a body and is used for detecting the movement of limbs; the 3D three-dimensional structure joint sensor is used for detecting human finger movement information and is used for intelligent wearable or bionic artificial limbs.
Advantageous effects
Compared with the prior art, the invention has the following beneficial effects:
1. the shearing structure design is carried out, the manufacturing process is simple, and the LIG material with a two-dimensional plane structure can be flexibly expanded to be three-dimensional so as to adapt to complex curved surfaces;
2. the existing joint sensor is insufficient in the condition of being attached to the skin when in movement, and the joint sensor can completely fit the skin to make related actions, and has strong following performance and high adaptability; the skin cutting and following effects are good after cutting, and the skin cutting and following effects are beneficial to the fields of artificial intelligence, motion detection, man-machine interaction and the like;
drawings
FIG. 1 is an optical view of a 3D stereo joint sensor prepared in example 1;
FIG. 2 is a scanning electron microscope image of the 3D stereo joint sensor prepared in example 1;
FIG. 3 is an electrical signal response of tensile strain of the 3D stereo joint sensor prepared in example 1;
FIG. 4 is a graph showing the relative resistance change of the 3D stereo joint sensor prepared in example 1 at different tensile strains;
FIG. 5 is the cyclic stability of the 3D stereo joint sensor prepared in example 1 at different frequency strains;
FIG. 6 is the cyclic stability of the 3D stereo joint sensor prepared in example 1 at various tensile strains;
FIG. 7 is a graph of cyclic stretch-recovery test performance of the 3D stereo joint sensor prepared in example 1;
FIG. 8 is a graph showing the wearing of the 3D stereo joint sensor prepared in example 1 at a wooden finger model joint and its electrical signal variation;
FIG. 9 is a bending optical view of a conventional LIG flexible sensor;
FIG. 10 is a graph showing the detection of finger movement signals by applying the 3D stereo joint sensor prepared in example 1 to a human finger joint;
FIG. 11 is a graph showing the detection of finger movement signals by applying the 3D stereo joint sensor prepared in example 1 to a human knee joint;
FIG. 12 is an optical plot and corresponding electrical signal response to tensile strain for a 3D stereo joint sensor prepared in example 2;
fig. 13 is an optical diagram of the 3D stereoscopic joint sensor prepared in example 3 and the corresponding electrical signal response to tensile strain.
Detailed Description
The following is a clear and complete description of the present invention, taken in conjunction with the accompanying drawings, and it is evident that the described embodiments are some, but not all, embodiments of the present invention. Other embodiments of the invention, which are encompassed by the present invention, are within the scope of the invention as would be within the skill of those of ordinary skill in the art without undue burden. In addition, it will be appreciated by those skilled in the art that the 3D stereoscopic joint sensor according to the present invention can be applied to different joints of the human body to perform its detection function, wherein the joints include, but are not limited to, finger joints, knee joints, ankle joints, etc.
Example 1
The 3D three-dimensional structure joint sensor and the preparation method thereof are characterized by comprising the following steps:
step one, preparing circular laser-induced graphene: and preparing the patterned laser-induced graphene on the PI film, and preparing the circular laser-induced graphene by using an ultraviolet laser.
Step two, circular laser induced graphene is cut again: and (3) carrying out secondary shearing on the round laser-induced graphene by laser, and dividing the round graphene into a plurality of parallel discrete units. And shearing in a one-time marking cutting mode to obtain the 3D three-dimensional structure joint sensor.
The method comprises the core steps of the invention, and the 3D joint sensor with the three-dimensional structure can be obtained by performing laser secondary shearing on the patterned laser-induced graphene on the PI film.
Specifically, in the first step, an ultraviolet laser is selected for preparing the patterned laser-induced graphene on the PI film, the shape of the patterned laser-induced graphene is a circle with the diameter of 15-25 mm, and the parameters of the ultraviolet laser are as follows: the pulse wave frequency is 120kHz, the pulse width is 2 mu s, the scanning speed is set to be 30mm/s, and the scanning interval is 0.01mm;
and secondly, carrying out secondary shearing on the round laser-induced graphene through laser, and dividing the round graphene into a plurality of parallel discrete units. The shearing mode was a direction perpendicular to the laser-induced direction (tangential direction), and the cutting pitch was 0.5mm. Meanwhile, the laser cutting parameters are selected to be 20kHz of pulse wave frequency, 0.5 mu s of Q pulse width and 20mm/s of scanning speed.
Fig. 1 is an optical diagram of the sensor, fig. 2 is a scanning electron microscope diagram of a cut graphene material, fig. 3 is an electrical signal response of tensile strain, the sensor shows a response of an electrical signal exceeding 15% when being stretched, and the sensor shows sensitive and symmetrical electrical signal changes in the stretching and recovering processes, so that the linearity is good. Fig. 4 shows the relative resistance change of the sensor at different tensile strains, where it can be seen that at 20% tensile strain the sensor exhibits a more linear relative resistance change with a sensitivity factor of 0.84. Figures 5 and 6 show the cycling stability of the sensor at different frequencies and different tensile strains, respectively, in which the sensor can be observed to have a stable electrical signal response at the same tensile strain, and the sensor is free from the effects of tensile frequency, with excellent frequency independence. The durability of the sensor under the preparation process is also an important parameter for measuring the practical application value of the sensor. As shown in FIG. 7, the 3D three-dimensional structure joint sensor with the line width of 0.5mm is subjected to a cyclic stretching-recovering test on a universal testing machine, and experimental results show that in the cyclic test of 1000s, the relative resistance change of the sensor is basically unchanged, and the electric response curves amplified at the early stage, the middle stage and the later stage of the cyclic test, namely about 170s, 500s and 825s, are observed, so that the sensor can be clearly found to have stable and excellent electric signal response, and the durability of the practical application of the sheared and stretched 3D three-dimensional structure joint sensor is verified.
LIG sheared by laser not only has the tensile property of LIG confinement on the original PI film, but also shows obvious advantages in bending performance. As shown in fig. 8, the cut circular LIG was simply fixed at both ends to joints of the wooden finger model. The joint was gradually bent from an initial parallel angle of 0 ° to 30 °, 45 °, 60 ° and 90 °, and the corresponding sensor electrical signal change also showed a stepwise gradual increase with the bending angle, and when the finger was bent to 90 °, the sensor electrical signal change was about 3.5%. It can be observed that although the sensor is simply fixed at two ends, the sensor can still be well attached to the joint, in the process of bending fingers, the sheared circular LIG flexible strain sensor is unfolded from the original planar 2D structure to the 3D three-dimensional structure, the sheared small sensor units at the joint are in a structure from dense to gradually sparse, the circumferential position of the circular structure LIG sensor can be tightly attached to the hand joint without the aid of an external adhesive, which is incomparable with the traditional 2D planar sensor, fig. 9 is an optical diagram of the uncut LIG flexible sensor, and can be used for showing the condition that LIG on a PI film is completely unattached to the skin when bending due to inextensibility, and the prepared planar LIG well solves the problem of attaching to the human skin under the addition of a laser shearing technology, so that the flexible strain sensor can be applied to intelligent wearable equipment.
Fig. 10 is an optical diagram of finger movement, in which an electrical response curve shows that the sensor can accurately capture signals of finger bending, the sensor detects about 4% of changes of relative resistance when the finger bends, and the corresponding peak value of the electrical signal at each time is basically consistent when the sensor bends at the same angle, which proves that the sensor is feasible to be worn on the finger for sensing and man-machine interaction.
Example 2
The 3D three-dimensional structure joint sensor and the preparation method thereof are characterized by comprising the following steps:
step one, preparing patterned laser-induced graphene on a PI film, wherein an ultraviolet laser is selected as the patterned laser-induced graphene, the shape of the patterned laser-induced graphene is a circle with the diameter of 15-25 mm, and the parameters of the ultraviolet laser are as follows: the pulse wave frequency is 120kHz, the pulse width is 2 mu s, the scanning speed is set to be 30mm/s, and the scanning interval is 1mm;
and secondly, carrying out secondary shearing on the round laser-induced graphene through laser, and dividing the round graphene into a plurality of parallel discrete units. The shearing mode is a direction (tangential direction) perpendicular to the laser induction direction, and the cutting interval is 0.1-10 mm. Meanwhile, the laser cutting parameters are selected to be 20kHz of pulse wave frequency, 0.5 mu s of Q pulse width and 20mm/s of scanning speed.
Fig. 12 is an optical diagram of the 3D stereoscopic structure joint sensor prepared in example 2 and the corresponding electrical signal response to tensile strain, the sensor shows sensitive and symmetrical electrical signal changes in the stretching and recovering processes, the linearity is good, and the degree of electrical signal change is reduced compared with example 1.
Example 3
The 3D three-dimensional structure joint sensor and the preparation method thereof are characterized by comprising the following steps:
step one, preparing patterned laser-induced graphene on a PI film, wherein an ultraviolet laser is selected as the patterned laser-induced graphene, the shape of the patterned laser-induced graphene is a circle with the diameter of 15-25 mm, and the parameters of the ultraviolet laser are as follows: the pulse wave frequency is 120kHz, the pulse width is 2 mu s, the scanning speed is set to be 30mm/s, and the scanning interval is 0.01mm;
and secondly, carrying out secondary shearing on the round laser-induced graphene through laser, and dividing the round graphene into a plurality of parallel discrete units. The shearing mode was a direction perpendicular to the laser-induced direction (tangential direction), and the cutting pitch was 2mm. Meanwhile, the laser cutting parameters are selected to be 20kHz of pulse wave frequency, 0.5 mu s of Q pulse width and 20mm/s of scanning speed.
Fig. 13 is an optical diagram of the 3D stereoscopic joint sensor prepared in example 3 and the corresponding electrical signal response to tensile strain, the sensor exhibiting sensitive and symmetrical electrical signal changes during both stretching and recovery, good linearity, and increased response time compared to other examples.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the technical solution of the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solution described in the foregoing embodiments may be modified or some of the technical features thereof may be equally substituted; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The preparation method of the 3D three-dimensional structure joint sensor is characterized by comprising the following steps of: and preparing the patterned laser-induced graphene on the substrate film, and then performing secondary shearing of laser, wherein the secondary shearing is perpendicular to the direction of the laser-induced direction, and dividing the circle into a plurality of parallel discrete units by adopting a primary marking cutting mode, so as to obtain the 3D three-dimensional structure joint sensor.
2. A 3D stereoscopic joint sensor according to claim 1, wherein: the material of the substrate film is selected from one of Polyimide (PI), phenolic Resin (PR), polydimethylsiloxane (PDMS), polyether Ether Ketone (PEEK), polyetherimide (PEI), polyethersulfone (PES).
3. A 3D stereoscopic joint sensor according to claim 1, wherein: and preparing the patterned laser-induced graphene on the PI film by using an ultraviolet laser, wherein the shape of the patterned laser-induced graphene is a circle with the diameter of 15-25 mm.
4. The method for manufacturing the joint sensor with the 3D stereo structure according to claim 1, wherein the method comprises the following steps: the laser parameters for preparing the patterned laser-induced graphene are as follows: the pulse wave frequency is 100-140 kHz, the pulse width is 1-4 mu s, the scanning speed is set to 15-45 mm/s, and the scanning interval is 0.005-0.02 mm.
5. The method for manufacturing the joint sensor with the 3D stereo structure according to claim 4, wherein the method comprises the following steps: the cutting interval of the secondary shearing is 0.1-10 mm.
6. The method for manufacturing the joint sensor with the 3D stereo structure according to claim 4, wherein the method comprises the following steps: the parameters of the selected secondary shear are: the pulse wave frequency is 15-25 kHz, the pulse width is 0.3-0.7 mu s, and the scanning speed is set to be 10-30 mm/s.
7. A 3D stereoscopic joint sensor, characterized in that the 3D stereoscopic joint sensor is prepared according to the preparation method of claims 1-6.
8. Use of a 3D stereoscopic joint sensor according to claim 7, characterized in that: the 3D three-dimensional structure joint sensor is used for detecting human finger movement information.
9. Use of a 3D stereoscopic joint sensor according to claim 8, characterized in that: the 3D three-dimensional structure joint sensor is used for intelligent wearable or bionic artificial limbs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311044398.4A CN117091492A (en) | 2023-08-18 | 2023-08-18 | 3D three-dimensional structure joint sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311044398.4A CN117091492A (en) | 2023-08-18 | 2023-08-18 | 3D three-dimensional structure joint sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117091492A true CN117091492A (en) | 2023-11-21 |
Family
ID=88769147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311044398.4A Pending CN117091492A (en) | 2023-08-18 | 2023-08-18 | 3D three-dimensional structure joint sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117091492A (en) |
-
2023
- 2023-08-18 CN CN202311044398.4A patent/CN117091492A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Chen et al. | Advances in graphene-based flexible and wearable strain sensors | |
| Nie et al. | High-performance piezoresistive electronic skin with bionic hierarchical microstructure and microcracks | |
| Wang et al. | Electronic skin for closed-loop systems | |
| Zhu et al. | Energy autonomous hybrid electronic skin with multi-modal sensing capabilities | |
| Chen et al. | Noncontact heartbeat and respiration monitoring based on a hollow microstructured self-powered pressure sensor | |
| Zazoum et al. | Recent advances in flexible sensors and their applications | |
| Dong et al. | Stretchable human machine interface based on smart glove embedded with PDMS-CB strain sensors | |
| Zhang et al. | Compressible and stretchable magnetoelectric sensors based on liquid metals for highly sensitive, self-powered respiratory monitoring | |
| US20170172439A1 (en) | Electrodes and sensors having nanowires | |
| CN110013234A (en) | A kind of pliable pressure sensor and pulse-taking instrument | |
| Chen et al. | Recent progress in graphene-based wearable piezoresistive sensors: From 1D to 3D device geometries | |
| Deng et al. | Smart wearable systems for health monitoring | |
| Huang et al. | Protrusion microstructure-induced sensitivity enhancement for zinc oxide–carbon nanotube flexible pressure sensors | |
| Ji et al. | Highly sensitive and stretchable piezoelectric strain sensor enabled wearable devices for real-time monitoring of respiratory and heartbeat simultaneously | |
| Zhou et al. | Textile-based mechanical sensors: A review | |
| Hu et al. | A triangular wavy substrate-integrated wearable and flexible piezoelectric sensor for a linear pressure measurement and application in human health monitoring | |
| Zang et al. | A facile, precise radial artery pulse sensor based on stretchable graphene-coated fiber | |
| CN117091492A (en) | 3D three-dimensional structure joint sensor | |
| Nan et al. | A review of epidermal flexible pressure sensing arrays | |
| Yu et al. | Biomimetic flexible sensors and their applications in human health detection | |
| Li et al. | AI-assisted disease monitoring using stretchable polymer-based sensors | |
| Zhan et al. | Ultra-highly sensitive and self-healing flexible strain sensor with a wide measuring range based on a bilayer structure | |
| Shu et al. | Flexible resistive tactile pressure sensors | |
| Wang et al. | Efficient Fabrication of TPU/MXene/Tungsten Disulfide Fibers with Ultra-Fast Response for Human Respiratory Pattern Recognition and Disease Diagnosis via Deep Learning | |
| KR20180078560A (en) | carbon nanotube network film and a pressure sensor including the same |
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 |