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This paper reports a new class of biosensors based on composite nanomaterial thin film. The composite nanomaterial film is synthesized using a simple vacuum filtration method. Using composite nanomaterial film, we can not only simplify the positioning and integration fabrication process of nanoscale materials into a functional device, but also enhance the sensing surface area significantly, which...
A multi-layer thick film array sensor for gas sensing application including heater element, insulator layer, and interdigitated electrodes was designed and fabricated on alumina substrate. Tin dioxide and platinum nanopowder were used in the pellet form as the active and catalyst layers, respectively. Pulse laser ablation deposition (PLAD) technique was used to deposit the sensitive layer onto the...
In this paper we investigate the application of transparent conductive oxides (TCO) in plasmonic devices, and especially for the functionalization of surface plasmon resonance and metamaterial sensors. We analyzed fabrication of laminar nanocomposites obtained by the deposition of indium oxide, tin oxide and indium tin oxide nanoparticles from solution to ultrathin freestanding structures. We investigated...
Graphene nanosheets (GNs) have been investigated as a counter electrode for dye-sensitized solar cells (DSCs). Mesoporous TiO2 films are prepared from the commercial TiO2 nano-powders by screen-printing technique on fluorine-doped tin oxide (FTO) slides. GNs are applied to substitute for platinum as counter-electrode materials. GN films are screen printed on FTO glass using a paste based on GNs dispersed...
Two forms of tin oxide (SnO2) nanoparticles (NPs) with different morphologies (small dispersed NPs and big clusters aggregated from small NPs) were synthesized via chemical solution methods and assembled into films on Si/SiO2 substrate for a comparative sensing study, which were tested for the responses to H2 S reducing gas and NO2 oxidizing gas, respectively. Similar detection limits to part per...
Inorganic nanoparticles SnO2 and In2O3 were dispersed using an in situ synthesis technique in one of the polyynes polymer, namely poly-2, 5-dimethoxyethynylbenzene(PDMEB) to prepare organic-inorganic nanocomposites PDMEB/SnO2 and PDMEB/In2O3. The nanocomposites were characterized by FT-IR, which highlighted the chain organization and the plasticizing effect of the nanoparticles on the polymers. Laser...
The wetting property of silicon mesh microchannels which are coated with SiO2/SnO2 nanoparticles is investigated in this paper. The SiO2/SnO2 bi-layer were prepared using layer-by-layer nano self assembly. It was found that the silicon mesh channels were superhydrophilic and demonstrated powerful capillary forces. The capillary rise rate was tested by measuring the front location of liquid on the...
The formation characteristics and the effect on electrical behavior of the nanoparticles caused by the interfacial redox reaction are investigated in single-layer organic memory devices with a structure of Al(aluminium)/2-amino-4,5-dicyanoimidazole (AIDCN)/indium tin oxide (ITO). It is demonstrated that the AIDCN/ITO interface is crucial for the electrically switching behavior, where SnOx nanoparticles...
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