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Composite liquid metal based flexible lead

A technology of liquid metal and flexible wires, applied in liquid conductors, metal/alloy conductors, bendable conductors, etc., can solve problems such as limited working range, poor anti-interference performance, and short service life of flexible wires, and achieve extended work range, ease of processing and mass production, and increased flexibility

Active Publication Date: 2019-10-29
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of short service life, poor anti-interference performance, and limited working range of the above-mentioned flexible wires, the purpose of the present invention is to provide a composite liquid metal wire with good flexibility, long service life and wide application in various working environments. wire

Method used

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  • Composite liquid metal based flexible lead
  • Composite liquid metal based flexible lead
  • Composite liquid metal based flexible lead

Examples

Experimental program
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Embodiment 1

[0038] figure 1 It is a single-layer gallium-bismuth-based composite liquid metal flexible wire according to a preferred embodiment of the present invention, including: an external flexible substrate 1, a solid metal 2 composed of a bismuth-based alloy, a liquid metal 3, and a lead wire 4. figure 1 The middle shaded part is the composite liquid metal line segment. The solid metal segment composed of bismuth-based alloy is located at both ends of the composite liquid metal line segment. 100°C, the room temperature liquid alloy GaIn 24.5 ) The liquid metal segment formed is located in the middle of the metal line segment. The material of the external flexible substrate is polydimethylsiloxane (PDMS). In this embodiment, the composite liquid metal is made into a cylinder with a cross-sectional diameter of 10 μm and a length ranging from 1 mm to centimeters according to the actual situation. The preparation method is a combination of injection method (suitable for liquid metal)...

Embodiment 2

[0043] figure 2 It is a single-layer solid-liquid composite liquid metal flexible wire according to a preferred embodiment of the present invention, including: an external flexible substrate 1 , solid metal 2 , liquid metal 3 , and lead wire 4 . The material of the external flexible substrate is polydimethylsiloxane (PDMS). The composite liquid metal is made into a quadrangular prism with a cross-sectional side length of 30 μm×200 μm, and the preparation method is a combination of an injection method (suitable for liquid metal) and a sputtering method.

[0044] figure 2 The middle shaded part is the composite liquid metal line segment, which includes solid metal segment and liquid metal segment (gallium-based alloy Ga 67 In 20.5 sn 12.5, the liquid alloy is formulated at a heating temperature of 240°C). In this embodiment, the liquid metal has 4 stages, and the solid metal has 5 stages. At normal temperature, the two metals form complementary properties. As shown in Fi...

Embodiment 3

[0047] According to a preferred embodiment of the present invention, a multilayer gallium-bismuth-based composite liquid metal flexible wire includes: an external flexible substrate 1 , solid metal 2 , liquid metal 3 , and leads 4 . Composite liquid metal consists of 2 layers ( Figure 3a ) or 3 layers ( Figure 3b ) composed of liquid metal 3 and solid metal 2 at normal temperature, and the liquid metal 3 and solid metal 2 are arranged alternately. The shaded part in the figure is the composite liquid metal segment.

[0048] The three-layer structure prepared in this embodiment can further improve the working reliability of the flexible heat-generating wire. Among them, the solid metal is a bismuth-based alloy (Bi 32.5 In 51 sn 16 .5, the melting point is 60 degrees Celsius), the thickness is 10 microns, and the liquid metal is a gallium-based alloy (Ga 62 In 25 sn 13 The melting point is 11 degrees Celsius) and the thickness is 10 microns. At room temperature, the t...

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Abstract

The invention provides a composite liquid metal based flexible lead. The flexible lead includes an external flexible base material, composite liquid metal and lead wires; the external flexible base material completely or partially wraps the composite liquid metal; the composite liquid metal includes more than two kinds of different metal, more than one kind of metal maintains a liquid state at normal temperature, and the metal is single metal or alloy; and the lead wires are connected to the composite liquid metal and used for extending the composite liquid metal section to connect with external equipment. The flexibility of the lead can be greatly enhanced by the external flexible base material and the liquid metal; and through the complementarity between the metal components of the composite liquid metal, the service life and working stability of the lead can be significantly enhanced, so that the working range of the lead can be expanded.

Description

technical field [0001] The invention belongs to the field of conductive materials, and in particular relates to a wire based on liquid metal. Background technique [0002] Due to its broad application prospects, flexible electronic devices have become one of the hot pursuits in the market and technical fields in recent years. Since flexible electronic devices can not only meet human requirements for wearable devices or implantable devices, but are also necessary parts for making soft robots, and wires are the most basic unit of any electronic device, improving the performance of wires is of great significance. [0003] At present, the main problems of flexible wires include short service life, difficulty in working normally in harsh environments, and poor stability. Therefore, optimizing flexible wires is one of the most important tasks in the fabrication of flexible electronic devices. The use of flexible wires based on composite liquid metal can effectively solve the sho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/00H01B7/04H01B1/02C12M1/38
CPCB01L3/5027B01L2300/1827H01B1/02H01B7/0027H01B7/04
Inventor 桂林张伦嘉高猛
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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