BACKGROUND It is well documented that Silver Nanoparticles (SNPs) are potent antimicrobial agents. However, little is known about antimicrobial effects of biologically synthesized SNPs at molecular level. In the present study, efficacy of the green microalgae Chlorella vulgaris in biosynthesis of silver nanoparticles and inhibitory effect of the biosynthesized SNPs on growth and virulence of St...

Over the last decade, plasmonic antireflecting nanostructures have been extensively studied to be utilized in various optical and optoelectronic systems such as lenses, solar cells, photodetectors, and others. The growing interest to all-dielectric photonics as an alternative optical technology along with plasmonics motivates us to compare antireflective properties of plasmonic and all-dielectr...

Using thermal evaporation, we fabricated five uniform and regular arrays of Ag nanostructures with different shapes that were based on an anodized aluminum oxide template and analyzed their optical properties. Round-top-shaped structures are obtained readily, whereas to obtain needle-on-round-top-shaped and needle-shaped structures, control of the directionality of evaporation, pore size, lengt...

We report the growth of well-oriented nest (reticulum)-like and lotus flower-like submicron structures of ZnO, over gold and silver nanoparticle assemblies, respectively. The structures were grown by a convenient chemical bath deposition method in a nutrient solution made of zinc nitrate (Zn(NO3)2 Æ 6H2O) and methyl amine (CH3NH2) at low temperature. SEM, XRD, Raman, UV–Vis and fluorescence spe...

Plasmonic nanostructures emerged as an appealing approach for black metal absorbers (BMAs) to provide significant light absorption. We present the simple and rapid fabrication of BMAs using laser-induced forward transfer silver nanoparticles (AgNPs). Randomly distributed plasmon at a multiscale were produced simultaneously during laser transfer, providing absorption antireflection features. The...

As the advanced functional materials, silver nanoparticles are potentially useful in various fields such as photoelectric, bio-sensing, catalysis, antibacterial and other fields, which are mainly based on their various properties. However, the properties of silver nanoparticles are usually determined by their size, shape, and surrounding medium, which can be modulated by various synthesis metho...

By interaction of metallic nanowires (NWs) with electromagnetic radiation of appropriate wavelength, resonant surface charge density oscillations, called surface plasmons, can be excited. These oscillations are responsible for a large electromagnetic field enhancement in the NW near-field, turning the wires into promising devices for highly sensitive detection of molecules using surface enhance...