Ordered mesostructured silica films: Effect of pore surface on its sensing properties

被引：19

作者：

Falcaro, P

Bertolo, JM

Innocenzi, P

机构：

[1] Univ Sassari, Dipartimento Architettura & Pianificaz, Lab Sci Mat & Nanotecnol, Palazzo Pou Salit, I-07041 Sassari, Italy

[2] Univ Padua, Dipartimento Ingn Meccan, Settore Mat, I-35131 Padua, Italy

[3] IMM CNR Sez Roma, Area Ric Roma Tor Vergata, I-00133 Rome, Italy

[4] Austrian Acad Sci, Inst Biophys & Xray Struct Res, A-8042 Graz, Austria

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2004年 / 32卷 / 1-3期

关键词：

self-assembling; mesostructured materials; thin film; Grotthus conduction; humidity sensor;

D O I：

10.1007/s10971-004-5773-9

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An electrochemical resistive-type sensor device, with a mesoporous silica thin film as sensitive membrane, has been developed and characterised. The silica film has been obtained via evaporation-induced self-assembly (EISA) using a tri-block copolymer (Pluronic F-127) as templating agent. It has been deposited by dip-coating on a silicon substrate with metallic interdigitated electrodes. Fast, reversible and reproducible electrical responses to relative humidity changes have been observed for the sensor device. The conduction mechanism has been related to chemical properties, structural order and surface morphology of the porosity in the silica film, confirming the dependence on the film preparation method and overall the importance of calcination temperature.

引用

页码：107 / 110

页数：4

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