Abstract

A novel composite model is put forward for humidity-sensitive material based on Maxwell-Garnett and effective medium theory. The analytical expression of the relation between effective refractive index and relative humidity is shown with different absorption factors and porosities. The larger the absorption factor is, the higher the refractive index is. The refractive index of humidity-sensitive SiO<sub>2</sub> film decreases with the increase of ceramic material porosity. The sensitivity of optical humidity sensor can reach the magnitude of 10<sup>?3</sup>. In comparison with the experimental humidity-sensing curve by the method of p-polarized reflectance and the analysis of mechanism, theoretical simulation is in agreement with experimental results. Therefore, this composite model is proved to be reasonable which lays new theoretical foundation in further research on optical humidity sensor.

© 2009 Chinese Optics Letters

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2008 (1)

2007 (1)

2006 (2)

2002 (1)

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

2001 (1)

1998 (1)

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

1989 (1)

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

1938 (1)

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

1935 (1)

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

1904 (1)

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

´Alvarez-Herrero, A.

Bayhan, M.

M. Bayhan and N. Kavaso?glu, Sens. Actuat. B 117, 261 (2006).

Bernabeu, E.

Bruggeman, D. A .G.

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

Brunauer, S.

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

Chen, F.

Emmett, P. H.

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

Heredero, R. L.

Jiang, Y.

Kavaso?glu, N.

M. Bayhan and N. Kavaso?glu, Sens. Actuat. B 117, 261 (2006).

Konstantaki, M.

Levy, D.

Li, P.

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

Li, X.

Liang, P.

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

Liu, X.

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

Madamopoulos, N.

Maxwell-Garnett, J. C.

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

Pispas, S.

Pissadakis, S.

Rittersma, Z. M.

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

Sun, B.

Sun, H.-T.

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

Tang, Y.

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

Teller, E.

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

Vainos, N. A.

Wang, H.

Wu, M.-T.

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

Xue, W.

Yang, Y.

Yao, X.

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

Yu, Z.

Zhang, W.

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

Ann. Phys. (in German) (1)

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

Appl. Opt. (2)

Chin. Opt. Lett. (2)

J. Am. Chem. Soc. (1)

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

Opt. Laser Technol. (1)

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

Phil. Trans. Roy. Soc. London (1)

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

Sens. Actuat. (1)

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

Sens. Actuat. A (1)

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

Sens. Actuat. B (1)

M. Bayhan and N. Kavaso?glu, Sens. Actuat. B 117, 261 (2006).

Other (3)

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

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

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

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