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== Optimization of Brain-Implanted Optical Sensors for Alzheimer's Treatment ==
This study presents a novel methodology for optimizing the optical parameters of brain-implanted sensors aimed at Alzheimer's disease treatment. Using finite element method (FEM)-based COMSOL Multiphysics, computational modeling and simulations were performed to evaluate key parameters such as light wavelength, incidence angle, tissue properties, electric fields, electromagnetic fields, light absorption rates, and temperature distribution. The findings reveal that when a 660nm wavelength light source is directed at a 20-degree angle, light absorption within brain tissue is maximized while thermal effects are minimized. Spatial distributions of electric and electromagnetic fields were visualized to analyze the scattering and absorption of light within the tissue. Additionally, thermal rise due to light absorption was calculated to propose designs that minimize the risk of thermal damage. These results demonstrate the feasibility of developing non-invasive and safe optical therapy devices, providing foundational data for the design of brain-implanted optical sensors and the development of effective therapeutic strategies.
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