BIOSENSOR PROPERTIES OF PLASMONIC SILVER NANOPARTICLES PRODUCED BY PLD

Plasmonic metal nanoparticles (NPs), such as Ag, Au, Cu NPs, attracts a lot of interest due to their notable applications in biological, and chemical sensing. Researchers have studied on plasmonic NPs which exceptional optical properties large spectral region. Metal form unique surface plasmon resonance (SPR) peak that is the electromagnetic spectrum’s visible part. The SPR firmly depends NP’s size, shape, dielectric constant, medium particle in. Light interacts with are smaller than wavelength incident light localized resonance. That leads Localised Surface Plasmon Resonance (LSPR) an oscillating local plasma around NP certain frequency form. LSPR detection most common method for shift measurement. Analyte absorption causes change constant thus shifts. Biological molecules proteins antibodies can sensitively be detected they environment. Therefore, Ag or Au used sensor by employing technique. Among has relatively higher refractive index sensitivity. Since shaper peak, generate more precise measurements. In our work, we produced various sizes spherical shapes Pulsed Laser Deposition (PLD). We investigated peaks UV-Vis spectroscopy. Moreover, biosensor binding Protein A NPs. 100 nm/RIU.