[1] Francesco B, Luigi C, Guihua Y, et al. Science, 2015, 347(6217): 1246501.
[2] ZHAI Qiu-ge, GUO Peng, ZHOU Lin, et al. Spectroscopy and Spectral Analysis, 2014, 34(8): 2152.
[3] LENG Yan-dan, ZHOU Jun-qi, ZHANG Hong-chao, et al. Spectroscopy and Spectral Analysis, 2015, 35(11): 3087.
[4] Wenyan Z, Longfei W, Zhaolong L, et al. RSC Adv., 2015, 5: 49521.
[5] Chengyong X, Paul A B, Jing L, et al. J. Phys. Chem. C, 2015, 119(30): 17271.
[6] Zheyuan Ch, Pierre D, Lei W, et al. ACS Nano, 2014, 8(3): 2943.
[7] Jun Y, Yuanbo Zh, Philip K, et al. Phys. Rev. Lett., 2007,98(16): 166802.
[8] Qing T, Zhen Z, Zhongfang C. Nanoscale, 2013, 5(11): 4541.
[9] Melinda Y H, Barbaros O, Yuanbo Zh, et al. Phys. Rev. Lett., 2007, 98(20): 206805.
[10] Fangping, O, Bing H and Zuanyi L. J. Phys. Chem., 2008, 112(31): 12003.
[11] Naeyoung J, Namdong K, Steffen J, et al. Nano Lett., 2009, 9(12): 4133.
[12] Das A, Pisana S, Chakraborty B, et al. Nature Nanotech., 2008, 3: 210.
[13] Duminda K, Samarakoon, Xiaoqian W. ASC Nano, 2010, 4: 4126.
[14] Andrew C C, Amanda G, Naeyoung J, et al. ACS Nano, 2012, 6: 1965.
[15] Xiaokai K, CHangle Ch, Qianwang Ch. Chem. Soci. Rev., 2014, 43: 2841.
[16] Ferrari A, Robertson!J. Phys. Rev. B, 2000, 61(20): 14095.
[17] Hulman M, Haluska M, Scalia G, et al. Nano. Lett., 2008, 8: 3594.
[18] Yan J, Zhang Y, Kim P, et al. Phys. Rev. Lett., 2007, 98(16): 166802.
[19] Chi-Fan Ch, Cheol-Hwan P, Bryan W B, et al. Nature, 2011, 471: 617.
[20] Jun Y, Erik H, Philip K, et al. Phys. Rev. Lett., 2008, 101(13): 136804
[21] Das B, Voggu R, Rout C S, et al. Chem. Commun., 2008, 41: 5155.
[22] Voggu R, Das B, Rout C S, et al. J. Phys.: Condens. Matt., 2008, 20: 472204
[23] Basko D M, Piscanec, Ferrari A C. Phys. Rev. B, 2009, 80(16): 165413.