Highly sensitive, self-powered and wearable electronic skin based on pressure-sensitive nanofiber woven fabric sensor - electronic skin care devices

Wearable electronic skin with high sensitivity and self
Power supply is widely used in human health monitoring, robot skin, intelligent electronic products and other fields.
In this work, we present and demonstrate a highly sensitive, self-conscious
Electric wearable electronic skin based on pressure
The sensitive nano-fiber fabric sensor is manufactured by weaving polybendione Electric spinning wire coated with PEDOT nano-fiber.
In particular, the nano-fiber fabric sensor with multiple sensors.
Hierarchy, which significantly induced changes in the area of super-contact
Low load, showing a combination advantage of high sensitivity (18.
376-1, in ~ 100 pa)
Wide pressure range (0. 002–10 kPa)
Fast response time (15 ms)
And better durability (7500 cycles).
More importantly, an open
By applying the periodic pressure of 10 kPa, the circuit voltage signal of the PPNWF pressure sensor is obtained, and the output is open
The pressure gauge applied by the circuit voltage shows obvious switching behavior, which indicates that the wearable microfiber fabric sensor can
Power supply under applied pressure.
In addition, we demonstrate the potential application of this wearable microfiber fabric sensor in electronic skin for health monitoring, human motion detection, and muscle tremor detection.
Human skin, more natural
Functional sensors can transmit information such as mechanical stimulation, temperature, humidity received by surrounding objects to the central nervous system, and then, in the nervous transmission system, the human brain recognizes the received information through a neural network.
Conversion between physical and chemical signals. Pressure-
Sensitive electronic skin is inspired by human skin, in health monitoring, robotic skin, surgery, highly sensitive sensing devices, intelligent electronic products, because it can imitate real human skin, pressure, deformation, motion and other static or dynamic external stimuli are detected with high precision.
Achieve accurate reality
By detecting parameters such as pulse, heartbeat and muscle vibration for time health monitoring, electronic skin that can be applied in daily life needs to be woven into fabric to meet people's clothing requirements, in addition to high sensitivity, low power consumption and manufacturing costs and large-
Regional Implementation.
So far, pressure-
Sensitive electronic skin based on flexible substrate has made great progress.
The pressure resistance sensor detects various tactile stimuli through the change of resistance, and the change of contact resistance between conductive materials is one of the important ways to realize the high-voltage sensitivity sensor under mechanical deformation.
Currently, flexible electronic skins are usually made using templates
Construction of synthesis of multiple structures on flexible substrates, such as micro-interlocking
Convex, Pyramid and fingerprint structure used to improve the sensitivity of the pressure sensor. Jiang .
A flexible nano-fiber sensor with high sensitivity is reported (15. 6 kPa)
Low detection limit (1. 2u2009Pa)
Modular components based on Poly-difluoride-
Trifluoride polymer P (VDF-TrFE)
Nano-fiber sensor for reducing graphene oxide (rGO). Ko .
Preparation of pressure resistance sensor with tunnel effect based on carbon nanotubes
The base composite elastic body with interlocking array structure has a sensitivity of 15.
1 hundred PA at low load.
While these flexible pressures
Sensitive sensors have high sensitivity, and most previously reported sensors are still unable to weave to obtain wear resistance due to membrane structure limitations. Lu .
Put forward a simple self
Assembly strategy of constructing super robot
Sensitive pressure sensor made of super coated PU yarn
A thin elastic conductive layer of carbon black and natural rubber that can be woven into a fabric to monitor the tiny movement of the human body. Yu .
An electronic fabric based on interwoven sensor electrodes was made with a pressure-resistant rubber as the shell sensing element and an elastic thread coated with silver nano wires as the pull-up and high-guide electrode.
Thanks to the unique coaxial structure and fiber sensor structure, the sensor is able to accurately capture the applied load.
Although this wearable electronic skin has high sensitivity and weaving ability, its complex yarn structure and external power supply are still problems that need to be overcome in its practical application.
So the electronic skin should be self-
Achieve continuous energy supply and portability in daily use. Dahiya .
Describes an energy.
Independent flexible transparent electronic skin with novel structure, based on single
The following layer of graphene and photovoltaic cells as building materials for energyautonomous.
This structure makes the sensor highly sensitive over a wide range of pressure (0. 11–80 kPa)
And there is a promising alternative to replacing the battery with a solar cell on the back panel of the touch sensor. Wang .
An electric eel was introduced. skin-
By embedding AgNWs in silicone rubber, a mechanically durable and elastic friction-electric nano-generator is stimulated, as well as the typical output performance of the device, including open-ended
Circuit Voltage, transfer charge density and short circuit
The circuit current density is obtained by applying a 10 n contact force of different frequencies.
These results are beneficial for a variety of deformed power supplies, deformed electronic devices, and fully autonomous electronic skin and interactive systems.
Taking into account the above
In this study, we developed a highly sensitive, self-sensitive
Electric wearable electronic skin based on pressure
Sensitive nano-fiber fabric sensor made by woven poly-diammonium (PVDF)
Poly of nano-coating of Electric spinning line3,4-
Ethyl dithiated)(PEDOT).
Novel design of multi-body
The hierarchical structure of the nano-fiber fabric sensor we prepared significantly induced the change in the ultra-low contact area
Low load, resulting in a large change in resistance, giving the sensor a high pressure sensitivity.
In addition, the wearable microfiber fabric sensor can be self-contained
Excellent sensitivity.
This wearable microfiber fabric sensor has a perfect application in the electronic skin of the health monitoring system used in daily life.