Enhanced ethanol sensing properties based on α-Fe2O3/In2O3 hollow microspheres

NO sensing by single crystalline WO3 nanowires

“…Nanostructured materials offer many advantages such as high surface-to-volume ratio, minimum power consumption, and they can be readily incorporated into microelectronic devices [11]; therefore, a transition from bulk materials [12] to thin films [13,14] and nanostructured materials [10,15,16] is taking place in the last decade. The application of nanostructured materials, such as single crystalline nanowires [17][18][19][20][21][22][23][24][25], nanotubes [26][27][28][29] and polycrystalline nanofibers [30][31][32][33][34][35], nanostructured hollow spheres [36][37][38][39] and hemispheres [40][41][42], has contributed significantly to the development of highly sensitive and selective chemical sensors.…”

Anodized nanoporous WO3Schottky contact structures for hydrogen and ethanol sensing

“…Hydrogen gas dissociates directly to produce hydrogen ions, while ethanol vapour needs an additional dehydrogenation step where ethanol dissociates into ethoxides and acetaldehyde before generating the hydrogen ions. 66,67 Thus, the device demonstrated a longer response time upon exposure to ethanol vapour.…”

Effect of Growth Temperature and Time on Morphology and Gas Sensitivity of Cu2O/Cu Microstructures

“…To enhance the sensing properties of gas sensors, some efforts have been devoted to the synthesis of some various hollow or porous structures [16][17][18][19][20] or to the incorporation with precious metals, such as Au [21,22] and Ag [23,24]. During the past ten years, some semiconductor oxides, such as SnO 2 [20,[25][26][27], ZnO [28][29][30], In 2 O 3 [31,32], and WO 3 [33][34][35][36], have been intensively investigated. However, the performance and fundamental understanding of micro/nano-Cu 2 O-based sensors are still in the elementary stages.…”