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Flexible bioelectrode and preparation method thereof

A bioelectrode and flexible technology, applied in gaseous chemical plating, sensors, diagnosis, etc., can solve the problems of bioelectrode and skin contact impedance, achieve noise reduction, simple and efficient preparation method, and suitable for mass production

Active Publication Date: 2019-07-30
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problems of existing bioelectrodes and skin contact impedance, an object of the present invention is to provide a flexible bioelectrode that can effectively solve the problem of bioelectrodes and skin contact impedance without piercing the skin or causing skin damage

Method used

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  • Flexible bioelectrode and preparation method thereof
  • Flexible bioelectrode and preparation method thereof
  • Flexible bioelectrode and preparation method thereof

Examples

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no. 1 approach

[0059] The first embodiment of the present invention provides a flexible bioelectrode, which includes: a conductive substrate 2; a one-dimensional conductive nanomaterial 1 formed on the On the surface of the conductive substrate 2, the diameter of the one-dimensional conductive nanomaterial 1 is 20 to 200 nm, and the length is 30 to 100 μm; wherein, at least in the contact interface area between the conductive substrate 2 and the one-dimensional conductive nanomaterial 1 has Polymer coating3.

[0060] The flexible bioelectrode of the present invention refers to a bioelectrode that still maintains normal functions during the process of bending, folding or even stretching deformation under the action of external force. In the present invention, by tightly fixing the one-dimensional conductive nanomaterial 1 on the conductive substrate 2, the one-dimensional conductive nanomaterial 1 can take advantage of its length-to-diameter ratio during the measurement of human body bioelect...

no. 2 approach

[0081] The second embodiment of the present invention provides a method for preparing the flexible bioelectrode according to the first embodiment of the present invention, which specifically includes the following steps:

[0082] A one-dimensional conductive nanomaterial is formed on the surface of the conductive substrate in such a manner that its axial direction is approximately perpendicular to the surface of the conductive substrate, the diameter of the one-dimensional conductive nanomaterial is 20-200 nm, and the length is 30-200 nm. 100μm;

[0083] A polymer solution is coated at least on the contact interface area between the conductive substrate and the one-dimensional conductive nanomaterial, and the polymer coating is formed after curing.

[0084] Typically, the present invention uses an anodized aluminum template with through holes, and uses electrochemical deposition or vapor deposition to grow one-dimensional conductive nanomaterials on the The surface of the con...

Embodiment

[0115] Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all commercially available conventional products.

[0116] Example

[0117] 1. Preparation of conductive substrate

[0118] In this embodiment, the conductive substrate is mainly composed of a flexible commercial polyimide (PI) film and an upper gold conductive layer. The commercial polyimide film has a thickness of 8 μm.

[0119] figure 2 Shown is the preparation process of the conductive substrate. Such as fig...

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Abstract

The invention provides a flexible bioelectrode and a preparation method thereof. The flexible bioelectrode comprises a conductive substrate and a one-dimensional conductive nano material; the one-dimensional conductive nano material is formed on the surface of the conductive substrate in a mode that the axial direction of the one-dimensional conductive nano material is roughly orthogonal to the surface of the conductive substrate, wherein the one-dimensional conductive nano material is 20-200 nm in diameter and 30-100 microns in length; at least a contact interface area of the conductive substrate and the one-dimensional conductive nano material is provided with a polymer coating. The flexible bioelectrode can achieve effective contact with skin lines. Moreover, measured noise can be significantly reduced along with the improvement of fitting performance of the flexible bioelectrode and the human body.

Description

technical field [0001] The invention relates to a flexible biological electrode and a preparation method thereof, belonging to the technical fields of human body electrical signal monitoring and flexible electronic devices. Background technique [0002] There are a variety of electrical signals related to physiological health on the surface of the human skin, including EEG, ECG, Oculoelectricity, and Myoelectricity. The continuous real-time and accurate acquisition of these electrical signals is of great significance for the monitoring of cardiovascular diseases, the monitoring of athletes' movement, and the research of the brain and nervous system. Traditionally, the acquisition of these electrical signals has been based on bulky, non-deformable rigid electronics. However, since the skin tissue on the surface of the human body is very soft, the modulus mismatch between traditional electronic devices and human skin tissue will not only cause discomfort during long-term wear...

Claims

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Application Information

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IPC IPC(8): A61B5/04C09D183/04C23C16/04C23C16/06C25D5/02
CPCA61B5/6801C23C16/042C23C16/06C25D5/022C09D183/04A61B2562/164A61B2562/14A61B2562/125A61B5/24
Inventor 冯雪赵星蔚梁紫微
Owner TSINGHUA UNIV
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