[1] Z. M. Rittersma, Sens. Actuat. A 96, 196 (2002).

[2] B. Sun, F. Chen, and Y. Yang, Chin. Opt. Lett. 6, 350 (2008).

[3] H.-T. Sun, M.-T. Wu, P. Li, and X. Yao, Sens. Actuat. 19, 61 (1989).

[4] M. Bayhan and N. Kavasoˇglu, Sens. Actuat. B 117, 261 (2006).

[5] S. R. Morrison, The Chemical Physics of Surfaces (in Chinese) Y. Liu, (trans.) (Peking University Press, Bei-jing, 1984).

[6] M. Konstantaki, S. Pissadakis, S. Pispas, N. Madamopoulos, and N. A. Vainos, Appl. Opt. 45, 4567 (2006).

[7] J. Shen, Advanced Ceramics (in Chinese) (1) 32 (1998).

[8] J. Fang and Z. Yin, Dielectric Physics (in Chinese) (Sci-ence Press, Beijing, 1989).

[9] J. C. Maxwell-Garnett, Phil. Trans. Roy. Soc. London 203, 385 (1904).

[10] D. A .G. Bruggeman, Ann. Phys. (in German) 416, 636 (1935).

[11] A. ′Alvarez-Herrero, R. L. Heredero, E. Bernabeu, and D. Levy, Appl. Opt. 40, 527 (2001).

[12] S. Brunauer, P. H. Emmett, and E. Teller, J. Am. Chem. Soc. 60, 309 (1938).

[13] X. Liu, P. Liang, W. Zhang, and Y. Tang, Opt. Laser Technol. 30, 85 (1998).

[14] X. Li, W. Xue, Y. Jiang, H. Wang, and Z. Yu, Chin. Opt. Lett. 5, 665 (2007).