Rao Qingwen, Xu Guanjun, Wang Pengfei, Zheng Zhengqi
Shanghai Key Laboratory of Multidimensional Information Processing, East China Normal University, Shanghai 200241, China.
Peng Cheng Laboratory, Shenzhen 518052, China.
Sensors (Basel). 2021 Jan 3;21(1):263. doi: 10.3390/s21010263.
The propagation characteristics of terahertz (THz) waves incident vertically into inhomogeneous and collisional dusty plasma with a ceramic substrate are studied using the scattering matrix method (SMM). The effects of the incident wave frequency and plasma parameters, such as the maximal electron density, dust particle density, dust particle radius and collision frequency, on the reflectance and transmittance of THz waves in the dusty plasma are discussed. In addition, the differences of the propagation properties in the dusty plasma, with and without ceramic substrate, are analyzed. Meanwhile, the differences of the propagation properties in dusty plasma and common plasma, respectively, with ceramic substrate are also compared. Simulation results show that the substrate and dust particles have significant influence on the propagation characteristics of THz wave in plasma sheath. Finally, the transmission increases with the increase of electron density, dust density, dust particle radius and collision frequency.
利用散射矩阵法（SMM）研究了太赫兹（THz）波垂直入射到具有陶瓷衬底的非均匀碰撞尘埃等离子体中的传播特性。讨论了入射波频率和等离子体参数，如最大电子密度、尘埃粒子密度、尘埃粒子半径和碰撞频率，对尘埃等离子体中太赫兹波反射率和透射率的影响。此外，分析了有、无陶瓷衬底时尘埃等离子体中传播特性的差异。同时，还比较了有陶瓷衬底时尘埃等离子体和普通等离子体中传播特性的差异。模拟结果表明，衬底和尘埃粒子对太赫兹波在等离子体鞘层中的传播特性有显著影响。最后，透射率随电子密度、尘埃密度、尘埃粒子半径和碰撞频率的增加而增大。
