Development of Ni doped ZnO/polyaniline nanocomposites as high response room temperature NO2 sensor

Low-temperature operating ZnO-based NO2 sensors: a review

“…Jain et al prepared Ni doped ZnO/polyaniline (Ni : ZnO/PANI) nanocomposites using a wet chemical synthesis combined in situ oxidative polymerization technique. 100 It was found that NO 2 sensing performance of Ni : ZnO/PANI sensor has been signicantly improved at room temperature. Both high response (75% to 100 ppm NO 2 ) and fast response/recovery times (82/399 s) of Ni : ZnO/PANI sensor have been achieved.…”

The intrinsic piezoelectric properties of materials – a review with a focus on biological materials

“…42 When ZnO is fabricated in a nano-rod/wire conguration, it has a heightened sensitivity due to a large surface to volume ratio which makes it a great material for sensors. 43,44 Wang et al fabricated a ZnO piezoelectric nanogenerator (NG) based on aligned ZnO nanowires. 10 Even though the NG output was initially just enough to run a nanodevice, such as a molecular electronic memory device, 45 ZnO nanogenerators have undergone a lot of development, and now show a stunning piezoelectric coefficient of 46 To achieve such high piezoelectric coefficient, a wet chemical co-precipitation method was used to dope ZnO nanorods with neodymium.…”

Investigation of the room temperature ferro-magnetism in transition metal-doped ZnO thin films

“…In that case, the number of nuclei of metal increases as an effect of increasing precursor concentration [15], which leads to the formation of a denser and compact structure of the ZnO thin lm on the substrate surface. The low surface Nidoped thin lm also used as a NO 2 Sensor [16]…”