Capacitive flexible tensile sensor based on S-shaped micro-channel liquid metal composite dielectric layer

A liquid metal and composite medium technology, applied in the direction of instruments, measuring devices, measuring force, etc., can solve the problems of restricting the application and popularization of liquid metal, the high requirements of Cu plate mold processing technology, etc., achieve excellent deformation characteristics, improve anti-interference, The effect of good electrical properties

Inactive Publication Date: 2020-08-07
JILIN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the differences in the size, shape, and pattern of the prepared sensors, the processing technology of the Cu plate mold is requi

Method used

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  • Capacitive flexible tensile sensor based on S-shaped micro-channel liquid metal composite dielectric layer
  • Capacitive flexible tensile sensor based on S-shaped micro-channel liquid metal composite dielectric layer
  • Capacitive flexible tensile sensor based on S-shaped micro-channel liquid metal composite dielectric layer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] Example 1

[0032] like figure 1 and figure 2 As shown, in this embodiment, the capacitive flexible tensile sensor based on the S-type micro-channel liquid metal composite medium layer is mainly composed of a flexible packaging layer 1, a flexible electrode 2 and an S-type micro-channel liquid metal composite medium layer 3;

[0033] Among them, the S-shaped micro-channel liquid metal composite medium layer 3 is provided with an S-shaped micro-channel cavity 3-2 in a rectangular flexible substrate 3-1 and filled with a liquid state in the S-shaped micro-channel cavity 3-2. metal, and sealed at the opening; the S-shaped micro-channel cavities 3-2 are distributed along the radial direction of the rectangular flexible substrate, and the shape is continuous S-shaped (such as image 3 shown);

[0034] A flexible electrode 2 and a flexible encapsulation layer 3 are sequentially arranged on the upper and lower surfaces of the S-shaped microchannel liquid metal composite di...

Example Embodiment

[0037] Example 2

[0038] like Figure 4 to Figure 6 As shown, the S-shaped microchannel cavity has a bionic structure similar to plant rhizomes, and its structural parameters include microchannel radius, microchannel bending amplitude, microchannel bending frequency, number of single-layer microchannels, microchannel The number of layers and the cross-sectional shape of the channel will affect the spatial distribution of the S-shaped microchannel cavity in the rectangular flexible matrix.

[0039] The microchannel radius, microchannel bending amplitude, microchannel bending frequency and channel cross-sectional shape of the S-shaped microchannel cavity, wherein the microchannel bending amplitude is the ratio of the transverse length to the radial length of a single S-shaped structure, The bending frequency of the microchannel is the number of complete S-shaped structures in the tensile strain sensor under the condition that the bending amplitude of the microchannel is determ...

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Abstract

The invention discloses a capacitive flexible tensile sensor based on an S-shaped micro-pore channel liquid metal composite dielectric layer, and belongs to the field of flexible tensile strain sensors. The S-shaped micro-pore channel liquid metal composite dielectric layer is formed by arranging an S-shaped micro-pore channel cavity in a rectangular flexible substrate and injecting liquid metal into the S-shaped micro-pore channel cavity, and a flexible electrode and a flexible packaging layer are sequentially arranged on the upper surface and the lower surface of the S-shaped micro-pore channel liquid metal composite dielectric layer. The S-shaped micro-channel liquid metal composite dielectric layer uses a silicone rubber substrate as an elastic substrate, uses liquid metal as a liquid-phase filler to fill the S-shaped micro-channels, and the cavities are distributed in the elastic substrate in an S shape. According to the capacitive flexible stretching sensor, a bionic structure similar to plant rhizomes is adopted, the capacitive flexible tensile sensor has the characteristics of good ductility, high sensitivity and low delay, and a feasible scheme is provided for designing the high-sensitivity capacitive flexible tensile strain sensor meeting the requirements of the application fields of human body posture monitoring, human-computer interaction, human physiological signalmonitoring and the like.

Description

technical field [0001] The invention belongs to the field of flexible and stretchable strain sensors, in particular to a capacitive flexible stretch sensor based on an S-shaped micro-channel liquid metal composite medium layer, which can be applied to human body posture monitoring, human-computer interaction, human physiological signal monitoring and other application fields . Background technique [0002] In recent years, flexible electronic products have developed rapidly driven by technologies such as smart materials and flexible sensors, which have attracted great attention from academia and industry. As an important part of wearable electronic products, flexible and stretchable strain sensors have attracted people's attention due to their unique advantages of flexibility, stretchability and wearing comfort, and have been widely used in electronic skin (e-skin), Human-computer interaction interface and intelligent robot and other fields. The new generation of flexible ...

Claims

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Application Information

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IPC IPC(8): G01L1/14
CPCG01L1/14G01L1/148
Inventor 高永慧汤茜孙玉伟张刚王福军李多
Owner JILIN NORMAL UNIV
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