研究"空气/特异材料/理想金属"组成的三明治体系,将梯度性质加入到电磁特异材料层的介电参量中,发现这类结构可以对电磁波具有奇异的调控性质.如果设计材料介电参量的梯度形式,可以使体系对反射波相位具有线性的调控,体系的反射波可变为单一模式的平面波,甚至在某些情况下反射波完全变为表面波.通过数值计算和模拟验证了理论预言.
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