Contact angle measurement on xerogel sensitive layer for optical fibre sensor

被引:8
作者
Cherif, K
Abdelghani, A
Hleli, S
Ponsonnet, L
Jaffrezic-Renault, N
Matejec, V
机构
[1] IPEST, Unite Rech Phys Semicond, Tunis 2070, Tunisia
[2] Ecole Cent Lyon, IFOS, F-69134 Ecully, France
[3] Acad Sci Czech Republ, Inst Radio Engn & Elect, CR-18251 Prague, Czech Republic
来源
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS | 2003年 / 23卷 / 05期
关键词
contact angle measurement; AFM; optical fibre; xerogel layers;
D O I
10.1016/S0928-4931(03)00049-3
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper deals with approach for the detection of chemical vapours based on refractive-index changes of a silica xerogel layer deposited as an optical cladding on the fibre core. The fibre is multimode fibre excited with an inclined collimated beam. The refractive-index changes are evaluated by means of changes of the output power at the end put of the fibre. The optical properties of the sensitive cladding (refractive index and absorption coefficient) can be obtained with modelisation program. The sensitivities of tetraethoxysilane (TEOS) and methyltriethoxysilane (MTEOS)-based xerogel layers to toluene and water are presented in the paper. The hydrophobicity of the two-xerogel layers and their surface-free energy has been determined with contact angle measurements. A correlation between optical detection results and contact angle measurements can be done. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:571 / 577
页数:7
相关论文
共 12 条
[1]   Optical fibre sensor coated with porous silica layers for gas and chemical vapour detection [J].
Abdelghani, A ;
Chovelon, JM ;
Jaffrezic-Renault, N ;
Lacroix, M ;
Gagnaire, H ;
Veillas, C ;
Berkova, B ;
Chomat, M ;
Matejec, V .
SENSORS AND ACTUATORS B-CHEMICAL, 1997, 44 (1-3) :495-498
[2]   Chemical vapour sensing by surface plasmon resonance optical fibre sensor coated with fluoropolymer [J].
Abdelghani, A ;
Chovelon, JM ;
JaffrezicRenault, N ;
Veilla, C ;
Gagnaire, H .
ANALYTICA CHIMICA ACTA, 1997, 337 (02) :225-232
[3]   Atomic force microscopy on bare and thiol monolayer covered gallium arsenide [J].
Abdelghani, A .
MATERIALS LETTERS, 2001, 50 (2-3) :73-77
[4]  
ANDRADE JD, 1979, J POLYM SCI POL SYM, P313
[5]   FIBEROPTIC EVANESCENT-WAVE SENSOR FOR IN-SITU DETERMINATION OF NONPOLAR ORGANIC-COMPOUNDS IN WATER [J].
BURCK, J ;
CONZEN, JP ;
BECKHAUS, B ;
ACHE, HJ .
SENSORS AND ACTUATORS B-CHEMICAL, 1994, 18 (1-3) :291-295
[6]  
Busscher H. J., 1992, WETTABILITY SURFACES, P249
[7]  
CHERIF K, 2002, P EUROSENSORS, V16, P219
[8]  
Furman S., 1992, BASIC OPTICS MULTILA
[9]   Detection of toluene by using specially coated PCS fibers excited by an inclined collimated beam [J].
Matejec, V ;
Berková, D ;
Chomát, M ;
Zábrodsky, M .
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2002, 21 (1-2) :217-221
[10]  
MATSUMOTO K, 1997, P IEEE, V85