Exploring the impedance-matching effect in terahertz reflection imaging of skin tissue
Author : Seung Jae Oh, Inhee Maeng, Ki Suck Nam, Yeo Jun Yoon, Jin-Kyung Shim, Ji Su Kim, Suck-Gu Kang, Min Yong Jeon, and Han-Cheol Ryu Journa Name: BIOMEDICAL OPTICS EXPRESS Country : USA Volume: 15 issue: 2 Year: 2024 Views : 244Terahertz (THz) electromagnetic waves, known for their unique response to water, offer promising opportunities for next-generation biomedical diagnostics and novel cancer therapy technologies. This study investigated the impedance-matching effect, which enhances the efficiency of THz wave delivery into tissues and compensates for the signal distortion induced by the refractive index mismatch between the target and the sample substrate. Three candidate biocompatible materials, water, glycerol, and petroleum jelly were applied to a skin phantom and compared using THz two-dimensional imaging and time-of-flight imaging methods. Finally, we successfully demonstrated impedance-matching effect on mouse skin tissues.
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