eng Science and Education Publishing American Journal of Nanomaterials 2372-3122 2025-03-03 13 1 1 6 10.12691/ajn-13-1-1 AJN20251311 article Abel Sambou abel.sambou@ucad.edu.sn 1 Moulaye Diagne 2 Ansoumane Diedhiou 3 D¨¦partement de Physique, Facult¨¦ des Sciences et Techniques, Laboratoire de Photonique et de Nano-Fabrication, Universit¨¦ Ch¨¦ikh Anta Diop de Dakar, B.P.25114 Dakar-Fann Dakar, S¨¦n¨¦gal D¨¦partement de Physique, Facult¨¦ des Sciences et Techniques, Laboratoire des Semi-conducteur et d¡¯Energie Solair (LASES), Universit¨¦ Ch¨¦ikh Anta Diop de Dakar, S¨¦n¨¦gal D¨¦partement de Physque, UFR-Sciences et Technologie, Laboratoire LCPM, Universit¨¦ Assane Seck de Ziguinchor, BP: 523 Diabir, S¨¦n¨¦gal Optical properties of nanoparticles tin dioxide and titanium dioxide mesoporous obtained by numerical simulation with matlab software. The whole spectra have been fitted by Drude model and Mie theory, whose best fit parameter such as the size, surrounding medium reveal the SnO2 and TiO2 nanoparticles were highly transparent with average transmittance exceeding 93% in the wavelength visible region between 300 and 800nm for both material. We demonstrate that in visible region in particular between 350 and 800 nm, the transmittance rate is independent of SnO2 or TiO2 size. Resonance band of Ag/SnO2 nanoshell increase towards blue with an increase shell thickness in the investigated spectral rang. Absorption cross section spectra of Ag/SnO2 nanoshel have maxima at 410 nm for silver nanoparticle and the maxima exhibite a blue gamme from 410 nm to 490 nm with an increase SnO2 thickness from 0 nm to 100 nm. The illustrated results of this work (the high transparency and the resonance evolution) show this material could be good candidates for optoelectronic applications. https://pubs.sciepub.com/ajn/13/1/1/ajn-13-1-1.pdf semiconductor optical windows resonance plasmon nanoshell Drude model nanoparticle