Effect Of Metal Type On The Reflection Coefficient For Non-Invasive Glucose Sensing In The Millimeter Waveband
6th International Conference on Engineering Sciences (ICES 2023), Ankara, Turkey, 3 - 04 February 2023, pp.50, (Summary Text)
- Publication Type: Conference Paper / Summary Text
- City: Ankara
- Country: Turkey
- Page Numbers: pp.50
- Ankara Yıldırım Beyazıt University Affiliated: Yes
Abstract
Diabetes Mellitus is a chronic disease that affects more than 400 million people worldwide. There is still no cure for this disease today. Therefore, to minimize the side effects of the disease and to prevent hyperglycemia and hypoglycemia, it is important to determine and monitor the glucose level in blood. Invasive, minimal invasive and non-invasive methods can be used to determine the glucose level in the blood. Although invasive and minimal invasive methods are widely used, well-established and give satisfactory results, they bring infectious and psychological risks and they are not cost-effective solutions. Besides, invasive methods cannot provide continuous monitoring of the blood glucose level and the risks for hyperglycemia and hypoglycemia during sleep cannot be reduced. This situation has led researchers to determine the glucose level in the blood with a non-invasive method. In the search for non-invasive methods, microwave and millimeter wave portion of the electromagnetic spectrum have noteworthy potential since the radiation in this band offer lower energy per photon and less scattering, meaning it can penetrate deeper into tissue to reach areas of adequate blood concentration and provide more accurate glucose monitoring. Complex permeability of blood for millimeter waveband is very sensitive to glucose concentration. In this study, materials such as brass, steel, aluminum and copper were used to re-reflect the signals applied to the glucose solution through the WR-28 adapter. It has been shown that with better reflection coefficient, glucose level can be distinguished more clearly and steel displays better reflection performance compared to other materials. The results can be guiding for the material selection in the antenna design.