[1] Shelby R A, Smith D R, Schultz S. Experimental verification of a negative index of refraction[J]. Science, 292, 77-79(2001). http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=VIRT01000003000016000044000001&idtype=cvips&gifs=Yes

[2] Han Hao, Wu Dongwei, Liu Jianjun et al. A terahertz metamaterial analog of electromagnetically induced transparency[J]. Acta Optica Sinica, 34, 0423003(2014).

[3] Zhao Yang, He Jianfang, Yang Rongcao et al. Two-dimenional surface plasmonic grating optical absorber with gradually varying structure[J]. Acta Optica Sinica, 34, 0223005(2014).

[4] Liang Leixia, Xue Wenrui, Yang Ruicao. Optical absorber from surface plasmonic grating with depth-linear-gradient grooves[J]. Acta Optica Sinica, 37, 0123002(2017).

[5] Ni Bo, Chen Xiaoshuang, Zhang Yang et al. Impact of resonator rotational symmetry on infrared metamaterial absorber[J]. Journal of Infrared & Millimeter Waves, 33, 380-385(2014).

[6] Smith D R, Pendry J B. Homogenization of metamaterials by field averaging[J]. Journal of the Optical Society of America B, 23, 391-403(2006). http://ci.nii.ac.jp/naid/80019240209

[7] Landy N I, Sajuyigbe S, Mock J J et al. Perfect metamaterial absorber[J]. Physical Review Letters, 100, 207402(2008).

[8] Bingham C M, Tao H, Landy N I et al. A metamaterial absorber for the terahertz regime: design, fabrication and characterization[J]. Optics Express, 16, 7181-7188(2008). http://onlinelibrary.wiley.com/resolve/reference/PMED?id=18545422

[9] Shen Xiaopeng, Cui Tiejun, Ye Jianxiang. Dual band metamaterial absorber in microwave regime[J]. Acta Physica Sinica, 61, 058101(2012).

[10] Ma Rongkun, Tang Yueming, Wang Jijun et al. One-way absorber based on coupling of magnetic surface plasmonic resonances[J]. Chinese J Lasers, 43, 0117001(2016).

[11] Shen X, Cui T J, Zhao J et al. Polarization-independent wide-angle triple-band metamaterial absorber[J]. Optics Express, 19, 9401-9407(2011). http://www.ncbi.nlm.nih.gov/pubmed/21643197

[12] Li H, Yuan L H, Zhou B et al. Ultrathin multiband gigahertz metamaterial absorbers[J]. Journal of Applied Physics, 110, 014909(2011). http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5954097

[13] Cui Y, Fung K H, Xu J et al. Ultrabroadband light absorption by a sawtooth anisotropic metamaterial slab[J]. Nano Letters, 12, 1443-1447(2012). http://europepmc.org/abstract/MED/22309161

[14] Cao S, Yu W, Zhang L et al. Broadband efficient light absorbing in the visible regime by a metananoring array[J]. Annalen Der Physik, 526, 112-117(2014). http://onlinelibrary.wiley.com/doi/10.1002/andp.201300198/full

[15] Cao S, Yu W, Wang T et al. Two-dimensional subwavelength meta-nanopillar array for efficient visible light absorption[J]. Applied Physics Letters, 102, 021104-2642(2013). http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6508783

[16] Xu Wan, Yan Changchun, Shi Junxian et al. Great impacts of the dielectriclayer in a four-fan-rings-shaped metamaterial on the absorption of electromagnetic waves[J]. Acta Optica Sinica, 35, s116003(2015).

[17] Henry C H. Limiting efficiencies of ideal single and multiple energy gap terrestrial solar cells[J]. Journal of Applied Physics, 51, 4494-4500(1980). http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5108119

[18] Zhou J, Economon E N, Koschny T et al. Unifying approach to left-handed material design[J]. Optics Letters, 31, 3620-3622(2006). http://www.opticsinfobase.org/abstract.cfm?uri=ol-31-24-3620

[19] Johnson P B, Christy R W. Optical constants of the noble metals[J]. Physical Review B, 6, 4370-4379(1972). http://ci.nii.ac.jp/naid/30019066026

[20] Palik E D[M]. Handbook of optical constants of solids II, 33, 189(1985).

[21] Nishi H, Asami K, Tatsuma T. CuS nanoplates for LSPR sensing in the second biological optical window[J]. Optical Materials Express, 6, 1043(2016). http://www.opticsinfobase.org/abstract.cfm?uri=ome-6-4-1043

[22] Jin H, Wang K, Guo J et al. Slow-wave effect of substrate integrated waveguide patterned with microstrip polyline[J]. IEEE Transactions on Microwave Theory & Techniques, 64, 1717-1726(2016). http://ieeexplore.ieee.org/document/7470534/

[23] Zhao Y, Zhang Y N, Wang Q et al. Review on the optimization methods of slow light in photonic crystal waveguide[J]. IEEE Transactions on Nanotechnology, 14, 407-426(2015). http://ieeexplore.ieee.org/document/7021961/

[24] He S, Ding F, Mo L et al. Light absorber with an ultra-broad flat band based on multi-sized slow-wave hyperbolic metamaterial thin-films[J]. Progress in Electromagnetics Research, 147, 69-79(2014). http://www.researchgate.net/publication/276415403_Light_Absorber_with_an_Ultra-Broad_Flat_Band_Based_on_Multi-Sized_Slow-Wave_Hyperbolic_Metamaterial_Thin-Films

[25] Sterligov V A, Grytsaienko I A, Men Y. Scattering of surface plasmon-polaritons and volume waves by a rough gold film[J]. Optics Letters, 41, 3710-3713(2016). http://www.ncbi.nlm.nih.gov/pubmed/27519069

[26] Liu Z, Liu G, Fu G et al. Multi-band light perfect absorption by a metal layer-coupled dielectric metamaterial[J]. Optics Express, 24, 5020-5025(2016). http://www.opticsinfobase.org/abstract.cfm?uri=oe-24-5-5020

[27] Kim J D, Lee Y G. Graphene-based plasmonic tweezers[J]. Carbon, 103, 281-290(2016).

[28] Zhang N, Zhou P, Wang S et al. Broadband absorption in mid-infrared metamaterial absorbers with multiple dielectric layers[J]. Optics Communications, 338, 388-392(2015). http://www.sciencedirect.com/science/article/pii/S0030401814010177

[29] Vece M D, Kuang Y. Duren S N F V, et al. Plasmonic nano-antenna a-Si∶H solar cell[J]. Optics Express, 20, 27327-37336(2012).