in this paper we report an eco-friendly route for the synthesis of sliver nanoparticles using agaricus bisporus (white button mushroom) extract. the synthesized silver nanoparticles were confirmed and characterized by uv-visible spectrum of the aqueous solution containing silver ions showed a peak at 420 nm corresponding to the surface plasmon absorbance of silver nanoparticles. transmission el...

Surface plasmon resonance sensors (SPR) using copper for sensitive parts are a competitive alternative to gold and silver. Copper oxide is semiconductor has non-toxic nature. The unavoidable presence of may be interest as it non-toxic, but modifies the condition performance sensor. Therefore, characterization optical properties thin films interest. We propose method recover both thicknesses fro...

A novel optical method for the determination of thiram has been developed using surface plasmon resonance peak of gold nanoparticles (AuNPs). The stable and dispersed AuNPs were directly synthesized by reduction of HAuCl4 with ascorbic acid in micellar media according to a simple approach. The presence of thiram during formation of AuNPs results in the decrease of the intensity of plasmon reson...

DOI: 10.1002/smll.201002169 Hybrid organic–inorganic nanostructures are a critical platform for a wide range of chemical and biological sensing applications. [ 1– 3 ] Optical responses, such as Raman scattering and absorbance, serve as a signature for specifi c chemical groups and can be used for identifi cation and quantifi cation of analyte molecules. [ 4 ] Raman scattering, which is the quan...

Photothermal therapy (PTT) for cancer treatment is the use of heat between 41 and 45 °C to damage cancer cells. As a new type of transducer agent for PTT of cancer, CuS nanoparticles have several advantages. The most favorable features are the low cost, simple, and easy preparation and small size for targeting. However, the CuS nanoparticle PTT efficacy needs to be improved for practical applic...

A new controlled current multipulse methodology has been developed to modify the screen-printed electrode surface with silver nanoparticles (AgNPs). Spectroelectrochemistry has provided not only information about the type of nanoparticles (NPs) deposited on the electrode surface, but also about the electrosynthesis process. Small NPs without plasmon band are initially generated. Next, these nuc...

Abstract Synthesis of silver nanoparticles was successfully synthesized by a chemical reduction method using nitrate (AgNO 3 ) as precursor and sodium borohydride (NaBH 4 reducing agent. The optical properties were studied based on their surface plasmon resonance (SPR) phenomenon UV-Visible spectrophotometry. absorbance spectra colloidal show the peak at wavelength range 380 nm to 450 nm. Collo...

metallic nanoparticles can exhibit very large optical extinction in the visible spectrum due to localized surface plasmon resonance. spherical plasmonic nanoparticles have been the subject of numerous studies in recent years due to the fact that the scattering response of spheres can be analytically evaluated using mie theory. however a major disadvantage of metallic spherical nanoparticles is ...

Exact solutions to diffraction problems in wave optics are scarce though strongly demanded for accurate knowledge of electromagnetic fields the immediate vicinity scatterers. Here, we obtain and analyze an exact analytical solution plane-wave at a lateral junction two-dimensional (2D) conductors with dissimilar surface conductivities. We find that near possesses dipolelike radiative component 2...