[1] Weissleder R. Nat Biotech, 2001, 19(4): 316.

[2] Wang G, Park H Y, Lipert R J, et al. Analytical Chemistry, 2009, 81(23): 9643.

[3] Cao Y C, Jin R, Mirkin C A. Science, 2002, 297(5586): 1536.

[4] Rycenga M, Kim M H, Camargo P H C, et al. The Journal of Physical Chemistry A, 2009, 113(16): 3932.

[5] Kneipp K, Wang Y, Kneipp H, et al. Phys. Rev. Lett., 1997, 78: 1667.

[6] Nie S, Emory S R. Science, 1997, 275: 1102.

[7] Kneipp J, Kneipp H, McLaughlin M, et al. Nano Letters, 2006, 6(10): 2225.

[8] Maltzahn G V, Centrone A, Park J H, et al. Advanced Materials, 2009, 21(31): 3175.

[9] Qian X, Peng X H, Ansari D O, et al. Nat Biotech, 2008, 26(1): 83.

[10] Qian X M, Nie S M. Chemical Society Reviews, 2008, 37(5): 912.

[11] Huh Y, Chung A, Erickson D. Microfluidics and Nanofluidics, 2009, 6(3): 285.

[12] Clendinen C, Clendinen C, Sisk W N, et al. Dyes and Pigments, 2008, 77(1): 92.

[13] Potenza A, Zyontz J, Borowski L, et al. Acta Cryst., 1978, B34: 193.

[14] Ding H, Yong K T, Roy I, et al. The Journal of Physical Chemistry C, 2007, 111(34): 12552.

[15] Pierrat S, Zins I, Breivogel A, et al. Nano Letters, 2006, 7(2): 259.

[16] Varghese H T, Panicker C Y, Madhavan V S, et al. Journal of Raman Spectroscopy, 2009, 40(9): 1211.

[17] Clark R J H, Hester R E. Advances in Spectroscopy: Vol. 16 Spectroscopy of Surfaces, John Wiley & Sons: Chichester, 1988. 37.