Abstract: The anatomical model of a nasal cavity, such as a human nasal cavity, for in-vitro inhalation studies such as toxicological screening, intranasal drug delivery studies, and neurophysiological studies. The model includes a model body including separable upper and lower model portions together defining the nasal cavity and including fluidic channels therein that define an olfactory region of the upper model portion, and a nasal passage defined in the lower model portion. A biocompatible porous membrane is positioned between the upper and lower model portions, and the biocompatible membrane is configured for culturing olfactory epithelium cells thereon. An artificial mucous layer coats a surface of the nasal cavity and is configured to collect particles passing through the nasal cavity.

Abstract: Titanium metal is used as an electrode in organic solar cells. Methods of making an organic photovoltaic cell are described using titanium foil that is etched using lower and higher concentrations of a hydrofluoric acid solution. Subsequently, other layers were disposed on the titanium foil to complete the solar cell. Etching at the lower concentration for about 30 seconds properly treated the surface of the electrode and resulted in an advantageous solar cell. Etching at the higher concentrations resulted in a poor morphology that resulted in poor performance.

Abstract: A conducting substrate made of a nickel coating on paper that can be used in a dye-sensitized solar cell (DSSC or DSC). Zinc oxide is the preferred wide-band semiconductor deposited as a nanoparticle layer on the nickel-coated paper to form a photoanode once a dye is deposited on the nanoparticles. A method of constructing the nickel-coated paper substrate is also contemplated.