The largest body of work here: spray-pyrolysis, electrospun, and laser-ablated zinc oxide thin films and nanostructures, doped with nickel, manganese, cobalt, cerium, boron, fluorine, magnesium, and iron, mostly evaluated as room-temperature gas sensors.
A PANI-ZnO nanocomposite thin film with 20 wt% ZnO gives the strongest, most selective room-temperature methanol response among several tested loadings, responding in just 7 seconds.
Increasing the spray-pyrolysis precursor volume from 15 to 45 mL thickens ZnO films from 225 to 781 nm and raises conductivity, with the thicker film's open structure favoring gas sensing.
Raising the spray-pyrolysis substrate temperature shifts ZnO grain shape from spherical to pebble-like and strengthens the room-temperature ammonia response, peaking at 623 K.
Zn-loaded PLLA nanosheets release therapeutic zinc ions steadily over 10-12 hours and show antibacterial activity against E. coli, supporting their use as wound-healing patches.
A one-pot, chemical-free laser-ablation route sequentially builds ZnO@graphene-oxide core-shell nanoparticles in water, with longer graphite ablation producing thicker GO shells.
A template-free electrospinning route self-assembles ZnO into nanospheres, nanobushes, or pearl-chain nanowires, with the nanowire form reaching a room-temperature ethanol response of 78 at 100 ppm.
A nanopebble-textured ZnO film made by high-temperature spray pyrolysis selectively senses ammonia at room temperature down to 1 ppm.
An Au/ZnO-PVA/CAT/Chitosan biosensor detects hydrogen peroxide with a 9.13 nanomolar detection limit and under 1-second response time, validated directly in human blood serum.
A single sputter-deposited ZnO film shows the 'racetrack effect' creates a real spatial gradient in crystallite size, carrier mobility, and gas-sensing response across one nominally uniform substrate.
Substrate temperature controls ZnO film thickness and grain size in this zinc-nitrate-precursor study, with the thinnest, highest-resistance film giving the strongest acetaldehyde response.
