2021-10-31

A drop of sweat can determine whether you are under pressure. The University of Texas has jointly developed a high-sensitivity patch cortisol detector

By yqqlm yqqlm

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the greater the pressure, the more cortisol “stress hormone” is secreted. Therefore, by monitoring the change of cortisol level, you can make a preliminary judgment on the state of mental stress

at present, there have been instruments to indicate cortisol content by analyzing sweat, but they usually need to sweat a lot to obtain sufficient sweat detection

is there any equipment that can monitor in real time without a lot of exercise and sweating

recently, a company named enlisense and the University of Texas jointly developed a cortisol level detection device, which can use trace sweat to feed back the pressure level of subjects in real time

A drop of sweat can determine whether you are under pressure. The University of Texas has jointly developed a high-sensitivity patch cortisol detector

the detector is only 120 mm2 in size and only needs 1-3 microliters of sweat to achieve accurate detection

the advantage of portability also breaks the specific tested conditions and can truly reflect people’s mental state in life

how to determine the cortisol level in trace sweat

different from the working principle of blood glucose monitoring (CGM), cortisol is insoluble and stable, and its content cannot be determined by detecting ion concentration

therefore, another electrochemical principle, Faraday’s law of induction, is used in the cortisol detector. This detection method is also called electrochemical impedance spectroscopy (EIS)

the working principle of EIS is to show the disturbance of weak electrical signals with different frequencies in the system based on the change of the ratio of AC signal voltage to current (i.e. impedance value)

two types of sensors are usually used in EIS, Faraday sensor (f-eis) and illegal Faraday sensor (NF EIS)

the difference between the two is that the Faraday sensor electrode is filled with redox reagent electrolyte solution, and the change of impedance value between the two electrodes is measured by charge transfer, so as to display the concentration of the detected substance

this cortisol detector uses an illegal Ladi sensor. The electrolyte solution does not contain redox reagent, and cortisol antibody is fixed on the electrode surface

the antigen antibody binding of cortisol on the electrode surface will change the interface characteristics between the electrode and electrolyte, and then cause the capacitance to change and change the impedance value, so as to reflect the cortisol concentration

A drop of sweat can determine whether you are under pressure. The University of Texas has jointly developed a high-sensitivity patch cortisol detector(1)

based on EIS, the sensor can realize high-sensitivity real-time monitoring of cortisol level, requiring only about 2 μ l of tested liquid

with the characteristics of high sensitivity, small size and portability, this cortisol sensor can be combined with various non-invasive wearable devices, and can accommodate multiple target detection strips, which is more convenient to use

can not only reflect mental stress

quantify mental stress with figures. What’s the use except asking for leave to see a doctor

rose faghih, a researcher at the University of Houston, plans to connect sensors to the smart home system to explore a more intelligent human AI closed-loop system

poor mental state? The electronic equipment in the whole home can open the way for you. Adjusting lights and music may also be the basic operation

probably, the sudden emergence of milk tea will be more attractive

in addition, colored eggs caused by high pressure can also be used

faghih also studied the interaction between cortisol and leptin and explored the treatment of obesity. The instrument for real-time and accurate monitoring of cortisol will be more conducive to the development of such research

A drop of sweat can determine whether you are under pressure. The University of Texas has jointly developed a high-sensitivity patch cortisol detector(2)

the developer of the detector said that the next step will be to apply for FDA approval and widely apply it in real life