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A tapered thin film of Ta2O5 is sputtered on a single-mode slab glass waveguide to form a composite optical waveguide (COWG) for serving as a prism-coupled integrated optical polarimetric interferometer. The relationship between the refractive-index sensitivity (SRI) of the interferometer and the equivalent thickness (Teq) for the tapered layer of Ta2O5 is theoretically analyzed based on a four-layer homogeneous waveguide model. A comparison of the measured SRI with the simulated data leads to Teq 33.021 nm for the COWG used. The sensitivity of the interferometer to thickness of the protein adlayer is determined to be Sab (2.412 2)/nm. The acetic-acid concentration of a commercial Chinese vinegar is investigated, for the first time, by use of the interferometer combined with the Lorentz-Lorenz effective-medium theory. Water and methanol adulterations of a commercial Chinese liquor are detected with the interferometer. The results indicate that the refractive-index change induced by the adulteration is a quasi-linear function of the adulteration amount. Both the dynamic adsorption process of butyrylcholinesterase and the self-assembly process of cytochrome c/PSS multilayer film are monitored in real time with the sensor. The protein surface coverage is obtained from the combination of the measured phase-difference change and the adlayer-thickness sensitivity.
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Keywords:
- composite optical waveguide /
- polarimetric interferometry /
- high sensitivity /
- chemical biosensing
[1] Wu X F, Zhang J S, Li Z, Liu Y L, Gong Q H 2009 Chin. Phys. Lett. 26 057302
[2] Stamm Ch, Lukosz W 1996 Sens. Actuators B 31 203
[3] Klotz A, Brecht A, Gauglitz G 1997 Sens. Actuators B 38-39 310
[4] Schmitt K, Oehse K, Sulz G, Hoffmann C 2008 Sensor 8 711
[5] Qi Z M, Matsuda N, Takatsu, Kato K 2004 Langmuir 20 778
[6] Yimit A, Rossberg A G, Amemiya T, Itoh K 2005 Talanta 65 1102
[7] Ymeti A, Greve J, Lambeck P V, Wink T, Van Hövell S W F M, Beumer T A M, Wijn R R, Heideman R G, Subramaniam V, Kanger J S 2007 Nano. Lett. 7 394
[8] Zinoviev K, Dominguez C, Plaza J A, Busto V J C, Lechuga L M 2006 J. Lightwave Technol. 24 2132
[9] Irace A, Breglio G 2003 Opt. Express 11 2807
[10] Ricard-Blum S, Peel L L, Ruggiero F, Freeman N J 2006 Anal. Biochem. 352 252
[11] http: //www.owls-sensors.com/[2000-2011]
[12] Hao P, Wu Y H, Zhang P 2010 Acta Phys. Sin. 59 6532 (in Chinese) [郝鹏, 吴一辉, 张平 2010 59 6532]
[13] Gong Y, Guo Y, Rao Y J, Zhao T, Wu Y, Ran Z L 2011 Acta Phys. Sin. 60 064202 (in Chinese) [龚元, 郭宇, 饶云江, 赵天, 吴宇, 冉曾令 2011 60 064202]
[14] Qi Z M, Itoh K, Murabayashi M, Yanagi H 2000 J. Lightwave Technol. 18 1106
[15] Lu D F, Qi Z M 2010 Chin. Phys. Lett. 27 104206
[16] Lu D F, Qi Z M 2011 Sens. Actuators B 157 575
[17] De Feijter J A, Benjamins J, Veer F A 1978 Biopolymers 17 1759
[18] Aspnes D E 1982 Am. J. Phys. 50 704
[19] Granados K, Gracia-Fadrique J, Amigo A, Bravo R 2006 J. Chem. Eng. Data 51 1356
[20] Dzyadevych S V, Arkhypova V N, Martelet C, Jaffrezic-Renault N, Chovelon J M, El'skaya A V, Soldatkin A P 2004 Electroanalysis 16 1873
[21] Topoglidis E, Campbell C J, Cass A E G, Durrant J R 2001 Langmuir 17 7899
[22] Kosmulski M 1997 Langmuir 13 6315
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[1] Wu X F, Zhang J S, Li Z, Liu Y L, Gong Q H 2009 Chin. Phys. Lett. 26 057302
[2] Stamm Ch, Lukosz W 1996 Sens. Actuators B 31 203
[3] Klotz A, Brecht A, Gauglitz G 1997 Sens. Actuators B 38-39 310
[4] Schmitt K, Oehse K, Sulz G, Hoffmann C 2008 Sensor 8 711
[5] Qi Z M, Matsuda N, Takatsu, Kato K 2004 Langmuir 20 778
[6] Yimit A, Rossberg A G, Amemiya T, Itoh K 2005 Talanta 65 1102
[7] Ymeti A, Greve J, Lambeck P V, Wink T, Van Hövell S W F M, Beumer T A M, Wijn R R, Heideman R G, Subramaniam V, Kanger J S 2007 Nano. Lett. 7 394
[8] Zinoviev K, Dominguez C, Plaza J A, Busto V J C, Lechuga L M 2006 J. Lightwave Technol. 24 2132
[9] Irace A, Breglio G 2003 Opt. Express 11 2807
[10] Ricard-Blum S, Peel L L, Ruggiero F, Freeman N J 2006 Anal. Biochem. 352 252
[11] http: //www.owls-sensors.com/[2000-2011]
[12] Hao P, Wu Y H, Zhang P 2010 Acta Phys. Sin. 59 6532 (in Chinese) [郝鹏, 吴一辉, 张平 2010 59 6532]
[13] Gong Y, Guo Y, Rao Y J, Zhao T, Wu Y, Ran Z L 2011 Acta Phys. Sin. 60 064202 (in Chinese) [龚元, 郭宇, 饶云江, 赵天, 吴宇, 冉曾令 2011 60 064202]
[14] Qi Z M, Itoh K, Murabayashi M, Yanagi H 2000 J. Lightwave Technol. 18 1106
[15] Lu D F, Qi Z M 2010 Chin. Phys. Lett. 27 104206
[16] Lu D F, Qi Z M 2011 Sens. Actuators B 157 575
[17] De Feijter J A, Benjamins J, Veer F A 1978 Biopolymers 17 1759
[18] Aspnes D E 1982 Am. J. Phys. 50 704
[19] Granados K, Gracia-Fadrique J, Amigo A, Bravo R 2006 J. Chem. Eng. Data 51 1356
[20] Dzyadevych S V, Arkhypova V N, Martelet C, Jaffrezic-Renault N, Chovelon J M, El'skaya A V, Soldatkin A P 2004 Electroanalysis 16 1873
[21] Topoglidis E, Campbell C J, Cass A E G, Durrant J R 2001 Langmuir 17 7899
[22] Kosmulski M 1997 Langmuir 13 6315
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