Method for preparing metasurface on skin for blood glucose detection

Abstract

The invention provides a method for preparing a metasurface on skin for blood glucose detection, and belongs to the field of flexible wearable electronic technology and medical health crossing technology. The blood glucose detection method comprises the steps of designing a metasurface with a resonant ring structure in advance, and establishing a model of the relation between the blood glucose concentration and the electromagnetic absorption characteristic of the metasurface through simulation; preparing a metasurface on the skin; scanning reflection spectra of the metasurface formed on the skin at different frequencies by utilizing electromagnetic waves to obtain a relation curve between the S11 parameter and the frequencies; and determining the change of the blood glucose concentration according to the model and the frequency shift of the resonance peak on the relation curve. According to the method, the electromagnetic wave metasurface which is good in skin compatibility, stable inelectromagnetic performance and high in blood glucose testing accuracy is directly constructed on the skin, the blood glucose concentration of the human body can be directly detected through the method, blood of the human body does not need to be collected, and real noninvasive detection of the blood glucose of the human body is achieved.

Description

technical field [0001] The invention belongs to the intersecting field of flexible wearable electronic technology and medical health, and in particular relates to a method for preparing a supersurface on skin for blood sugar detection. Background technique [0002] Diabetes has become a major chronic disease that threatens the health and life of modern people, and self-monitoring of blood glucose is an important part of diabetes management. At present, blood glucose is detected clinically by finger blood sampling with a blood glucose meter, which brings physical pain and bacterial infection to patients. [0003] Researchers have prepared wearable patch-type blood glucose sensors that enable minimally invasive blood glucose detection through electrochemical testing of subcutaneous tissue fluid, but require multiple calibrations with invasive methods. Therefore, it is of great significance to develop a painless and highly accurate non-invasive blood glucose detection technolo...

AI Technical Summary

Problems solved by technology

The current research on testing blood sugar based on electromagnetic wave metasurfaces is to build a metasurface on a specific substrate and deposit human blood on its surface for testing, or stick a substrate with a metasurface on the skin for testing. The former still needs to collect human blood, while the latter There will be relative displacement between the substrate and the skin, which will generate electromagnetic noise and reduce the accuracy of the test

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