有髓神经纤维中太赫兹波传输的模式理论分析  

Mode Theoretical Analysis of Terahertz Wave Transmission in Myelinated Nerve Fibers

作　　者：郭良浩 王凯程 王少萌[1] 宫玉彬[1] GUO Liang-hao;WANG Kai-cheng;WANG Shao-meng;GONG Yu-bin(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu610054,China)

机构地区：[1]电子科技大学电子科学与工程学院,四川成都610054

出　　处：《真空电子技术》2022年第4期1-5,I0002,共6页Vacuum Electronics

摘　　要：利用解析法研究并得到了神经纤维中太赫兹波远红外频段(0.1×10^(12)~100×10^(12) Hz)传输模式的色散曲线,并在此基础上分析了不同模式下神经纤维中横向截面上的能量以及场分布。通过与数值仿真软件CST的对比,证明了该方法的正确性。在研究太赫兹波在神经纤维中的纵向传输问题时,计算了有耗情况下太赫兹波在神经纤维中传输的坡印亭矢量,并比较了不同模式的传输效率,计算结果表明,神经髓鞘的高介电特性使得太赫兹波的能量能够有效地集中在髓鞘区域从而避免了细胞内外的极性溶液对太赫兹波的强吸收。The dispersion curves of the THz wave-far infrared(0.1~100THz)transmission modes in nerve fibers are studied by analytical method.On this basis,the energy and field distributions in the trans-verse section of nerve fibers under different modes are analyzed.Compared with the numerical simulation of CST software,the correctness of this method is proved.In the study of the longitudinal transmission of THz wave in nerve fibers,the Poynting vector of terahertz wave in the lossy case is calculated and the transmission efficiencies of different modes are compared.The calculation results show that the high die-lectric properties of the nerve myelin sheath enable effective concentration of the terahertz wave energy near-by,thus avoiding the strong absorption of terahertz wave by the polar solutions inside and outside the cell.

关 键 词：太赫兹波 神经纤维 色散方程 传输 

分 类 号：O691[理学—化学]