杜春光

• 1:清华大学物理系

摘要(Abstract)：

负折射现象是近年来被大量研究的一类有趣现象,它使人们对波动现象有了更深的理解,并推动了电磁新材料研究的发展.但是,负折射材料与通常正折射材料有很大不同,其中的物理原理不容易理解.文章用简单易懂的理论推演分析了负折射现象的物理起源,重新审视了波动方程的求解过程,并讨论了负折射现象给我们带来的启示.

关键词(KeyWords)： 负折射;波动现象;介电常数;磁导率;折射率;电磁学;麦克斯韦方程

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(11274197项目和10504016项目)的资助

作者(Author): 杜春光

参考文献(References)：

• [1] Pendry J B.Negative refraction makes a perfect lens[J].Phys.Rev.Lett.,2000,85(18):3966-3969.
• [2] Hau L V,Harris S E,Dutton Z D,et al.Light speed reduction to 17 metres per second in an ultracold atomic gas[J].Nature(London),1999,397(6720):594-598.
• [3] Wang L J,Kuzmich A,Dogariu A.Gain-assisted superluminal light propagation[J].Nature,2000,406(6793):277-279.
• [4] Smith D R,Pendry J B,Wiltshire M C K.Metamaterials and Negative Refravtive Index[J].Science,2004,305(5685):788-792.
• [5] Jackson J D.经典电动力学[M].3版.影印版.北京:高等教育出版社,2004.
• [6] Raether H.Surface plasmons on smooth and rough surfaces and on gratings[M].Berlin:Springer-Verlag,1988.
• [7] 郭硕鸿.电动力学[M].北京:高等教育出版社,1979.
• [8] Xie Y B,Bogdan-Ioan P,Zigoneanu L,et al.Measurement of a broadband negative index with space-coiling acoustic metamaterials[J].Phys.Rev.Lett.,2013,110(17):175501.
• [9] García-Chocano V M,Johan C,et al.Negative refraction and energy funneling by hyperbolic materials:An experimental demonstration in acoustics[J].Phys.Rev.Lett.,2014,112(14):144301.
• [10] Cheianov V V,Vladimir F,Altshuler B L.The focusing of electron flow and a Veselago lens in graphene p-n junctions[J].Science,2007,315(5816):1252-1255.
• [11] Cserti J,Plyi A,Pterfalvi C.Caustics due to a negative refractive index in circular graphene p-n junctions[J].Phys.Rev.Lett.,2007,99(24):246801.
• [12] Du C G,Chen H Y,Li S Q.Quantum left-handed metamaterial from superconducting quantum-interference devices[J].Phys.Rev.B,2006,74(11):113105.
• [13] Pendry J B.Time reversal and negative refraction[J].Science,2008,322(5898):71-73.