Graphene, Carbon Nanotubes, and Nanostructures

12	Trace Explosive Sensor Based on Titanium Oxide-B Nanowires Danling Wang and Antao Chen

CONTENTS

12.1  Introduction

12.2  Material Synthesis and Device Fabrication

12.2.1  Material Synthesis and characterization

12.2.2  Device Fabrication

12.2.3  Sensor Testing

12.2.4  Surface Modifications of Sensor Samples

12.3  Results and Discussion

12.3.1  Sensitivity and Response Time

12.3.2  Specificity and Stability

12.4  Understanding the Basic Mechanism of the Chemiresistive Response

12.4.1  The Role of Surface Hydroxyl Groups On TiO₂-B Nanowires to Response Explosives

12.4.1.1  Varying the Density of Surface Hydroxyl Groups through Plasma Treatment

12.4.1.2  Varying the Density of Surface Hydroxyl Groups through Self-Assembled Monolayer (SAM) ...