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Sweat sensor and preparation method thereof

A sensor and sweat technology, applied in the field of sensors, can solve the problems of easy mixed pollution, difficult transmission, and difficult sweat collection, etc., to achieve the effects of improving performance, solving difficult collection, and simple preparation process

Pending Publication Date: 2020-02-21
INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above technical problems, this application provides a sweat sensor and its preparation method, which can effectively solve the problems of difficult sweat collection, difficult transmission, and easy mixed pollution

Method used

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  • Sweat sensor and preparation method thereof
  • Sweat sensor and preparation method thereof
  • Sweat sensor and preparation method thereof

Examples

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no. 1 example

[0042] figure 1 It is an exploded schematic diagram of the structure of the sweat sensor according to the first embodiment. Please refer to figure 1 The sweat sensor of this embodiment includes a porous hydrophobic layer 11, an electrode layer 12 and a porous hydrophilic layer 13, the porous hydrophobic layer 11, the electrode layer 12 and the porous hydrophilic layer 13 are stacked in sequence and are in contact with each other, the porous hydrophobic layer 11 is used for Contacting the body surface makes sweat permeate through the porous hydrophobic layer 11 to the porous hydrophilic layer 13 for detection through the electrode layer 12 . Since the wettability gradient is formed between the porous hydrophobic layer 11 and the porous hydrophilic layer 13, the sweat can be oriented and transmitted along the direction indicated by the arrow inside the sensor and detected through the electrode layer 12, which makes it easier to collect and transmit sweat. The old sweat can't b...

no. 2 example

[0050] figure 2 It is a schematic flow chart of the manufacturing method of the sweat sensor according to the second embodiment. Please refer to figure 2 , the preparation method of the sweat sensor of the present embodiment, comprising:

[0051] Step 310, providing a porous hydrophilic layer and an electrode layer.

[0052] In this embodiment, the process of providing a porous hydrophilic layer includes:

[0053] Provide hydrophilic polymers;

[0054] The hydrophilic polymer is spun to form a nanofiber membrane through the first electrospinning process to obtain a porous hydrophilic layer.

[0055] Wherein, a hydrophilic polymer is selected as the spinning raw material, for example, a hydrophilic polymer cellulose acetate (CA) is selected. First, CA was dissolved in a mixed solvent of acetone / N,N-dimethylacetamide at a concentration of 15%, wherein the volume ratio of acetone to N,N-dimethylacetamide was 2:1. Next, take part of the solution and place it in a 10ml syri...

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Abstract

The invention relates to a sweat sensor. The sweat sensor comprises a porous hydrophobic layer, an electrode layer and a porous hydrophilic layer, wherein the porous hydrophobic layer, the electrode layer and the porous hydrophilic layer are sequentially stacked; and the porous hydrophobic layer is used for being in contact with the body surface, so that sweat is directionally conveyed to the porous hydrophilic layer through the porous hydrophobic layer to be detected through the electrode layer. According to the sweat sensor, the wettability gradient formed between the porous hydrophobic layer and the porous hydrophilic layer is utilized, so that sweat can be directionally transmitted in the sensor, and the problem that sweat is difficult to collect, difficult to transport and easy to mixto cause pollution is effectively solved.

Description

technical field [0001] The present application relates to the technical field of sensors, in particular to a sweat sensor and a preparation method thereof. Background technique [0002] Wearable biosensors can realize continuous and non-invasive detection of various indicators of the human body, and play an increasingly important role in modern medicine. As a biological fluid, sweat contains rich biomarkers that can be used to monitor physiological status and diagnose related diseases. At the same time, because sweat is produced by sweat glands on the body surface, it is easy to collect non-invasively. It has been widely used in mobile health diagnosis, sports monitoring and other fields. application. At present, researchers at home and abroad have carried out a lot of work on wearable sweat sensors and achieved a series of results. However, most wearable sweat sensors face problems such as difficulty in fast sweat collection, difficulty in transmission, and signal interfer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N27/30
CPCG01N27/26G01N27/30
Inventor 冯雪肖建亮叶柳顺陈颖
Owner INST OF FLEXIBLE ELECTRONICS TECH OF THU ZHEJIANG
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