Extensible electrode flattening integration method based on ultrathin viscous silica gel

Abstract

The invention discloses an extensible electrode flattening integration method based on ultra-thin viscous silica gel. The extensible electrode flattening integration method comprises the steps that firstly, an extensible electrode is transferred to the surface of the ultra-thin viscous silica gel through a small-area water-soluble adhesive tape; adhering the ultrathin viscous silica gel from the surface of the glass slide together through a large-area water-soluble adhesive tape, and overturning the ultrathin viscous silica gel; next, silica gel adhesive is brushed on the two end areas of the ultrathin viscous silica gel, and the two rectangular thick silica gel supporting blocks formed through cutting are adhered to the adhesive coating areas; then the processes of removing the water-soluble adhesive tape through hot water soaking and drying are completed; finally, the sample is clamped on clamps at the two ends of a mechanical tensile experiment table, the sample is in a flat and non-tensile state, and then the dust-free paper is cut off from the lower portion of the sample through scissors. The integration method of the extensible electrode based on the ultrathin viscous silica gel is innovatively developed, the sample is kept in a flat state in the whole process, self-adhesion is avoided, meanwhile, the operation difficulty is reduced, and beneficial application value is provided for a mechanical tensile experiment of a flexible electronic device.

Description

technical field [0001] The invention belongs to the technical field of biomedical electronics, and in particular relates to a method for flattening and integrating extensible electrodes. Background technique [0002] Based on polymer film materials such as polyimide (PI), parylene (Parylene), polyethylene terephthalate (PET), and structural designs such as serpentine lines and paper cutting, combined with elastic silicone The substrate is a common way to prepare stretchable electrodes, which provides a technical possibility for realizing electronic skin or brain-computer interface devices with stronger conformal attachment ability. Mechanical tensile experiments on such stretchable electrodes based on elastic silicone substrates are a necessary process to judge their stretchability. Existing research mainly integrates stretchable electrodes on a non-adhesive, large-thick elastic silicone substrate for mechanical tensile experiments. Although it can effectively keep the devi...

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Problems solved by technology

However, if the thickness of the silica gel film substrate is further reduced, it will be difficult to ensure that the silica gel film substrate is always flat during the integration operation. It is easy to be damaged by external force during operation, which makes the mechanical tensile test difficult

[0006] In terms of stretching methods, CN102680320B authorizes a fixture for tensile performance testing of ultra-thin flexible membranes. The first clamp body and the second clamp body are designed respectively, which can clamp thicknesses from several microns to several mm, but it does not mention how to fix the ultra-thin flexible film sample flatly and gently on the fixture. At the same time, it is extremely difficult to manually operate the ultra-thin flexible film that is sticky, especially to ensure that the film is always flat

[0007] To sum up, the existing research and inventions lack the exploration of the flattening test method of ultra-thin viscous silicone film, and the focus is on how to keep the structure flat and intact during the integration process of extensible flexible polymer electrodes and ultra-thin viscous silica gel. It has important application value for carrying out related mechanical tensile experiments

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