4:15 PM - 4:30 PM
▲ [15p-2E-4] Role of human sweat ducts in interaction of terahertz wave with human skin
Keywords:terahertz,sweat duct,helical antenna
Recently, some studies have demonstrated that sweat glands present in the human skin play a critical role in terahertz wave interaction with human beings. Here, we analyzed the density and dimension of the ducts based on 3D images obtained with optical coherence tomography. We observed that the average diameter of the human sweat ducts was approximately 95 μm. Based on the sweat duct dimensions and THz dielectric properties of skin measured using terahertz time-domain spectroscopy, we calculated the resonating frequency of the sweat duct under the assumption of it functioning as a helical antenna. Here, we found that the resonance frequency of human sweat ducts in the axial mode of operation lies in the THz wave region with a center frequency of 0.44 ± 0.07 THz.