PREFACE
ABOUT THE EDITOR
CONTRIBUTORS
7 EXPERIMENTAL INVESTIGATIOX AND MODELING OF GAS-SENSING EFFECTIN MIXED METAL OXIDE NANOCOMPOSITES
1 Introduction
2 Types of Mixed Metal Oxides
3 Synthesis of Metal Oxide Nanocomposites
4 Charge Transfer Processes and Conductivity
5 Conductivity Mechanism
6 Sensor Properties
7 Mechanism of Sensor Effect
7.1 Sensors Based on Single Nanofibers
7.2 Polycrystalline Sensors
8 Modeling of the Sensory Effect for Reduced Gases
8.1 Qualitative Discussion of the Sensory Mechanism
8.2 Equilibrium Electronic Characteristics Of SnO2
8.3 Sensor Response
9 Conclusions
Acknowledgment
References
8 THE INFLUENCE OF WATER VAPOR ON THE GAS-SENSING PHENOMENONOF TIN DIOXIDE-BASED GAS SENSORS
1 Introduction
2 Direct Water Effects on Tin Dioxide-Based Gas Sensors
2.1 Undoped SnO2
2.2 Doped SnO2
3 Indirect Water Effects on Tin Dioxide-Based Gas Sensors
3.1 Reducing Gases
3.2 Oxidizing Gases
4 Phenomenological Model
5 Conclusions
Acknowledgments
References
9 COMPUTATIONAL DESIGN OF CHEMICAL NANOSENSORS:TRANSITION METAL-DOPED SINGLE-WALLED CARBON NANOTUBES
1 Introduction
2 TM-Doped SWNTs as Nanosensors
3 Density Functional Theory
4 Kinetic Modeling
5 Nonequilibrium Green''s Function Methodology
5.1 Divacancy II
5.2 Divacancy I
5.3 Monovacancy
5.4 Target and Background Molecules
6 Sensing Property
7 Conclusions
Acknowledgments
References
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10 AL-DOPED GRAPHENE FOR ULTRASENSTIVE GAS DETECTION
11 PHYSICS-BASED MODELING OF SNO2 GAS SENSORS WITH FIELD-EFFECT TRANSISTOR STRUCTURE