The application of Ag nanostructures to surface-enhanced Raman scattering (SERS) is hindered by their chemical instability. Fabrication of durable Ag-based SERS substrates is therefore of great significance in practical applications. In this work, ultrathin C-layer-encapsulated Ag nanoparticle arrays (UCL-Ag-NAs) are successfully fabricated on the surface of indium-tin-oxide (ITO) glass, using ...

A simple but efficient method for highly sensitive Raman detection, covering a thin polydimethylsiloxane elastomer, pre-coated with a layer of Au or Ag nanoparticles, onto the detected substrate, is proposed. Moreover, this nanoparticle-coated PDMS elastomer can be used for chemical imaging with high sensitivity.

Electrochemical techniques rely on the stability of a defined reference potential. Due to the need for miniaturization, electrochemical lab-on-a-chip platforms often employ Ag/AgCl quasi-reference electrodes for this purpose. Here, we report on electrochemical artifacts resulting from nanoparticle-electrode collisions originating from standard chlorinated silver wires.

The use of graphene to target and eliminate cancer stem cells (CSCs) is an alternative approach to conventional chemotherapy. We show the biomolecule-mediated synthesis of reduced graphene oxide-silver nanoparticle nanocomposites (rGO-Ag) using R-phycoerythrin (RPE); the resulting RPE-rGO-Ag was evaluated in human ovarian cancer cells and ovarian cancer stem cells (OvCSCs). The synthesized RPE-...

By controlling the thickness of the silver shell, Au-Ag core-shell nanorods with quadruple plasmonic peaks corresponding to red, green, violet and deep violet regions have been prepared. Additionally, under polarized light, we achieved tunability of scattered colors from a single nanoparticle over an exceptionally wide wavelength range. The observed colors include red, orange, yellow, green, bl...

We study the coupling interactions between a progressively elongated silver nanoparticle and a silver film on a glass substrate. Specifically, we investigate how the coupling between localized surface plasmons (LSPs) and propagating surface plasmon polaritons (SPPs) is influenced by nanoparticle length. Although the multiple resonances supported by the nanoparticle are effectively standing wave...

A one-pot synthesis method has been developed for preparation of silver nanoparticles in aqueous poly (vinyl pyrrolidone) (PVP) solution by synchrotron X-ray radiation. The hydrated electrons (eaqˉ) and hydrogen atom radical (H·), products of radiolysis of water molecules by synchrotron X-rays brings about the reduction of the metal ions, resulting in homogeneous nucleation and nanoparticle for...

In the current research, atmosphere effects on photoinduced electron relaxations of undecorated TiO2 and Ag-decorated (Ag/TiO2) were carefully studied by means in situ photoconductance diffuse reflection measurements. pure N2 atmosphere, results showed that relaxation mainly occurs through transfer to residual O2, Ag nanoparticles form a fast pathway. It was seen apparent activation energy O2 g...

Metallic nanoparticle-decorated silicon nanowires showed considerable promise in a wide range of applications such as photocatalytic conversion, surface-enhanced Raman scattering, and surface plasmonics. However there is still insufficient amount of Raman scattering in Si nanowires with such decoration. Here we report the heteroepitaxial growth of Ag nanoparticles on Si nanowires by a surface r...