A Novel Nanorod Self-Assembled WO₃ · H₂O Spherical Structure: Preparation and Flexible Gas Sensor.

In this work, a novel WO³ · H²O spherical structure which was self-assembled by nanorods was achieved by using hydrothermal method. A comprehensive growth mechanism was proposed to explain the formation of three different type nanostructures. Flexible gas sensors were successfully fabricated based on such unique nanostructures.