Direct Growth of Mono‐ and Multilayer Nanostructured Porous Films on Curved Surfaces and Their Application as Gas Sensors

Abstract

Polystyrene sphere colloidal monolayers can be stripped off in some precursor solutions. A simple and flexible method is presented to directly synthesize nanostructured ordered porous films on any desired substrate with flat or even curved surfaces and then construct nanostructured porous gas sensors on commercially supplied ceramic tubes (see Figure).