Response Mechanism for Surface Acoustic Wave Gas Sensors Based on Surface-Adsorption

被引：31

作者：

Liu, Jiansheng ^{[1
]}

Lu, Yanyan ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Acoust, Beijing 100190, Peoples R China

来源：

SENSORS | 2014年 / 14卷 / 04期

基金：

中国国家自然科学基金;

关键词：

surface acoustic wave (SAW); gas sensor; physical adsorption; ELECTRONIC NOSE; CHROMATOGRAPHY; CONDUCTIVITY; SENSITIVITY; POLYMER; DEVICES; LAYERS;

D O I：

10.3390/s140406844

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A theoretical model is established to describe the response mechanism of surface acoustic wave (SAW) gas sensors based on physical adsorption on the detector surface. Wohljent's method is utilized to describe the relationship of sensor output (frequency shift of SAW oscillator) and the mass loaded on the detector surface. The Brunauer-Emmett-Teller (BET) formula and its improved form are introduced to depict the adsorption behavior of gas on the detector surface. By combining the two methods, we obtain a theoretical model for the response mechanism of SAW gas sensors. By using a commercial SAW gas chromatography (GC) analyzer, an experiment is performed to measure the frequency shifts caused by different concentration of dimethyl methylphosphonate (DMMP). The parameters in the model are given by fitting the experimental results and the theoretical curve agrees well with the experimental data.

引用

页码：6844 / 6853

页数：10

共 28 条

[1] MODIFICATIONS OF THE BRUNAUER, EMMETT AND TELLER EQUATION [J].

ANDERSON, RB .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1946, 68 (04) :686-691

[2] Adsorption of gases in multimolecular layers [J].

Brunauer, S ;

Emmett, PH ;

Teller, E .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1938, 60 :309-319

[3] ADSORPTION ON NONPOROUS SOLIDS [J].

BRUNAUER, S ;

SKALNY, J ;

BODOR, EE .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1969, 30 (04) :546-&

[4] GAS-DETECTION USING SURFACE ACOUSTIC-WAVE DELAY-LINES [J].

BRYANT, A ;

POIRIER, M ;

RILEY, G ;

LEE, DL ;

VETELINO, JF .

SENSORS AND ACTUATORS, 1983, 4 (01) :105-111

[5] Vapor Pressure of Organophosphorus Nerve Agent Simulant Compounds [J].

Butrow, Ann B. ;

Buchanan, James H. ;

Tevault, David E. .

JOURNAL OF CHEMICAL AND ENGINEERING DATA, 2009, 54 (06) :1876-1883

[6] Advances in SAW-based gas sensors [J].

Caliendo, C ;

Verardi, P ;

Verona, E ;

D'Amico, A ;

Di Natale, C ;

Saggio, G ;

Serafini, M ;

Paolesse, R ;

Huq, SE .

SMART MATERIALS & STRUCTURES, 1997, 6 (06) :689-699

[7] Theoretical optimizations of acoustic wave gas sensors with high conductivity sensitivities [J].

Fan, Li ;

Zhang, Shu-yi ;

Ge, Huan ;

Zhang, Hui .

SENSORS AND ACTUATORS B-CHEMICAL, 2012, 171 :1272-1276

[8] Optimization of sensitivity induced by surface conductivity and sorbed mass in surface acoustic wave gas sensors [J].

Fan, Li ;

Ge, Huan ;

Zhang, Shu-yi ;

Zhang, Hui ;

Zhu, Jian .

SENSORS AND ACTUATORS B-CHEMICAL, 2012, 161 (01) :114-123

[9] Influence of Surface Conductivity on Sensitivity of Acoustic Wave Gas Sensors Based on Multilayered Structures [J].

Fan, Li ;

Zhou, Feng-mei ;

Wang, Cheng ;

Gao, Hui-dong ;

Zhang, Shu-yi ;

Zhang, Hui ;

Wang, Xiang-bang .

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 2011, 58 (02) :451-460

[10] Characterisation of vegetable oils by surface acoustic wave sensing electronic nose [J].

Gan, HL ;

Man, YBC ;

Tan, CP ;

NorAini, I ;

Nazimah, SAH .

FOOD CHEMISTRY, 2005, 89 (04) :507-518

← 1 2 3 →