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Single-walled carbon nanotube-based flexible electrode array, wearable sensor and in-situ sweat monitoring method thereof

A technology of single-walled carbon nanotubes and flexible electrodes, which is applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve problems such as restrictions on widespread promotion, and achieve the effects of wide application prospects, controllable thickness, high uniformity and flexibility

Pending Publication Date: 2022-04-26
HUBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the reported preparation methods of flexible electrode arrays are mainly photolithography (Nature 2016, 529, 509-514), screen printing (ACS Nano 2018, 12, 5190-5196), roll-to-roll (ACS Nano 2018, 12 , 6978-6987) and laser engraving (Nature Biotechnology 2020, 38, 217-224), etc. However, these methods rely on advanced equipment, professional talents or complex manufacturing processes, which greatly limits their widespread promotion in resource-scarce areas

Method used

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  • Single-walled carbon nanotube-based flexible electrode array, wearable sensor and in-situ sweat monitoring method thereof
  • Single-walled carbon nanotube-based flexible electrode array, wearable sensor and in-situ sweat monitoring method thereof
  • Single-walled carbon nanotube-based flexible electrode array, wearable sensor and in-situ sweat monitoring method thereof

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Embodiment

[0044] (1) Preparation of PVDF / PDMS hollow filter template

[0045](a) Weigh a total of 4g of commercially available PDMS monomers and polymerizers (mass ratio: 10:1) and place them in a plastic petri dish, then stir them with a glass rod to make them evenly dispersed (this polymerization process will release a lot of air bubbles) ), and finally use a vacuum pump to remove air bubbles to obtain PDMS "inkpad", which is stored in the refrigerator for later use (4°C).

[0046] (b) First, use software such as Potoshop to draw the electrode array pattern (the diameter of the working electrode is 3mm), and use the HP laser printer (M1005, 1200×600dpi) to print the above electrode array pattern on sulfuric acid paper to obtain the electrode array mask . Subsequently, place the photosensitive stamp pad, PET transparent film, and electrode array mask on the glass panel of the exposure box in sequence (the printed side of the electrode array mask faces down), and then press tightly wit...

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Abstract

The invention discloses a single-walled carbon nanotube-based flexible electrode array, an intelligent wearable sensor and an application of the intelligent wearable sensor in in-situ sweat analysis. According to the method, a high-dispersity SWCNTs solution is used as a raw material, an SWCNTs conducting layer is selectively deposited in an electrode array area of a template filter membrane in a vacuum filtration mode, and then a high-precision SWCNTs-based flexible electrode array can be rapidly prepared in batches through PDMS transfer printing; after the flexible electrode array is subsequently functionalized, the flexible electrode array is further integrated with a signal acquisition and processing circuit system, a processed sensing signal is transmitted to a display module (such as a mobile phone APP), namely, the acquisition quantity is intelligently read, the concentration of various target objects is presented in real time, and the intelligent electrochemical in-situ monitoring system has a wide application prospect in the field of intelligent electrochemical in-situ monitoring.

Description

technical field [0001] The invention belongs to the technical field of intelligent wearable devices, and in particular relates to an application based on single-walled carbon nanotube-based flexible electrode arrays, intelligent wearable sensors and in-situ sweat analysis. Background technique [0002] So far, advanced wearable sensors can be worn on human skin to continuously and sensitively monitor human physiological signals without hindering or restricting the wearer's daily activities, which has attracted much attention in the field of smart medical monitoring. With the rapid development of wearable physical sensors that track human vital signs (temperature, blood pressure, pulse, heart rate, etc.) in real time in the commercial field, the development of wearable chemical sensors that provide personal health information at the molecular level is also imminent. Among them, wearable electrochemical sensors have made a major breakthrough in sweat sensing, and they have ach...

Claims

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Application Information

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IPC IPC(8): G01N27/327
CPCG01N27/3278
Inventor 刘志洪郝俊兴朱泽强
Owner HUBEI UNIV
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