http://www.sciepub.com/journal/AJN American Journal of Nanomaterials is a peer-reviewed, open access journal that provides rapid publication of articles in all areas of Nanomaterials. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of Nanomaterials. Science and Education Publishing en 2013 Science and Education Publishing Co. Ltd All rights reserved. American Journal of Nanomaterials 13 1 January 2025 2013 Science and Education Publishing Co. Ltd All rights reserved. http://pubs.sciepub.com/ajn/13/1/1 2 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.]]> Abel Sambou, Moulaye Diagne, Ansoumane Diedhiou 2025-03-03 Science and Education Publishing 2025-03-03 1 13 1 6 10.12691/ajn-13-1-1 http://pubs.sciepub.com/ajn/13/1/2 Rosmarinus officinalis (rosemary, RO) and Syzygium aromaticum (clove, CL) as natural reducing and stabilizing agents. UV–Vis spectroscopy confirmed nanoparticle formation, with TiO₂ showing its characteristic absorption band and Ag/TiO₂ composites exhibiting a bathochromic shift indicative of Ag–TiO₂ interactions. Scanning electron microscopy revealed predominantly spherical nanoparticles, averaging ~165 nm for TiO₂ and ~96 nm for Ag deposits, while energy-dispersive spectroscopy verified elemental composition. Antibacterial assays demonstrated markedly enhanced activity of Ag/TiO₂ nanocomposites compared to TiO₂ alone, with effective inhibition against Pseudomonas aeruginosa, Staphylococcus aureus, and Escherichia coli, although lower efficacy was observed against Enterococcus faecalis. Interestingly, TiO₂ nanoparticles synthesized with CL extracts exhibited selective antibacterial effects, while RO-based coatings appeared to reduce antimicrobial performance. The combined bioactivity of plant-derived phytochemicals and Ag/TiO₂ nanostructures highlights a synergistic approach for developing biocompatible, eco-friendly antibacterial agents. These results suggest that RO- and CL-mediated Ag/TiO₂ nanocomposites hold promise as adjunctive materials in restorative dentistry, particularly for pulpotomy applications where antibacterial efficacy is essential.]]> Rebecca Álvarez Arceo, Esteban Hernández Guevara, Judith Lerma Sevilla, Adolfo Neftalí García-Barrón, Fernanda Araiza-Verduzco 2025-10-13 Science and Education Publishing 2025-10-13 1 13 7 11 10.12691/ajn-13-1-2