螺旋结构手性材料的结构参数对旋波性的影响

Influence of the Constitutive Parameters of Helical Chiral Materials on the Electromagnetic Wave Rotation

手性材料具有旋波性。本工作首次研究了螺旋结构手性掺杂体的几何结构参数对旋波性的影响。螺旋结构手性体的结构参数由螺旋体的螺径、螺距、线径和环数来表示。利用普通的微波圆波导测量系统 ,在 8.5～ 11.5GHz频段内测量了电磁波通过不同螺旋结构手性材料后的偏转角。结果表明 :螺旋体的几何结构参数对偏转角有较大影响 ,随着螺旋体结构参数的变化 ,有Cotton效应出现。这些实验结果为手性材料的设计提供了实验依据。

Chiral materials exhibit electromagnetic wave rotation.In this paper,the influence of the geometric constitutive parameters of helical chiral inclusions on the electromagnetic wave rotation is studied for the first time.The constitutive parameters of the helices are represented by the helix diameter,the pitch,the gauge and the turns.The rotation angles are measured in the frequency band of 8.5～11.5GHz by using an ordinary microwave circular waveguide measurement system.The results show that the geometric constitutive parameters of the helices influence strongly on the rotation angle.The Cotton effect is observed with the variation of the geometric parameters of the helices.These results are helpful to the design of chiral materials.