Nanostructured Cerium-Doped ZnO Thin Film: A Breath Sensor
Cerium-doped ZnO thin films sense acetone and ethanolamine, breath biomarkers for diabetes and liver disorders, with dopant concentration tuned separately for each target.
Zinc Oxide (ZnO) Research
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.
Modulation of ZnO Film Thickness and Formation of Water-Hyacinth Nanostructure
Switching the spray-pyrolysis precursor solvent between water and ethanol tunes ZnO film thickness from 875 down to 150 nm, producing a distinctive water-hyacinth nanostructure along the way.
A Simple and Novel Room Temperature Ethanolamine ZnO Nanosensor
Spray-pyrolysis ZnO films made with different water-ethanol precursor solvents show the ethanol-only film selectively detects ethanolamine at room temperature, with a stable response over 30 days.
Electrospun Tailored ZnO Nanostructures: Role of Chloride Ions
Adding chloride ions to an electrospinning precursor steers ZnO growth from nanospheres to pencil-like nanorods, and the nanorod morphology gives the strongest room-temperature ethanol response.
Fluorine Doped ZnO Thin Film as Acetaldehyde Sensor
Fluorine doping shrinks ZnO crystallite size and increases micro-strain, and a 4 wt% fluorine-doped film gives the strongest, most selective room-temperature acetaldehyde response.
Sol-Gel Dip Coated Pure and Fe-Doped Nanostructured ZnO Thin Films
Pure and iron-doped ZnO thin films are grown by sol-gel dip coating, a low-temperature alternative to spray pyrolysis, to study how iron doping shapes the resulting nanostructure.
Solvent Volume Driven ZnO Nanopetals Thin Films: Spray Pyrolysis
Precursor volume alone steers spray-pyrolysis ZnO toward either better conductivity or better gas sensing, with a distinctive nanopetal morphology forming at 30 mL.
Volatile Organic Compounds Sensing Performance of ZnO Thick Film
A thick ZnO film is evaluated for its room-temperature sensing performance across a range of volatile organic compounds.
ZnO Nanospheres to Nanorods: Morphology Transition via Fe-Doping
Increasing iron-dopant concentration drives a clear shape transition in spray-deposited ZnO from rounded nanospheres to elongated nanorods, narrowing the optical band gap along the way.
The Rainbow Film That Wasn’t a Failure
A sputtered zinc oxide film was expected to be uniform. Its unexpected colors revealed hidden differences in structure, composition, electrical behavior, and gas-sensing performance across a single glass slide.
