We report on the first application of silicagold nanoshells to a solid-phase dot immunoassay. The assay principle is based on staining of a drop (1 ll) analyte on a nitrocellulose membrane strip by using silica/gold nanoshells conjugated with biospecific probing molecules. Experimental example is human IgG (hIgG, target molecules) and protein A (probing molecules). For usual 15-nm colloidal gol...

Objective(s):Several studies have been carried out to investigate the effect of various nanoparticles exposed to radiofrequency (RF) waves on cancerous tissues. In this study, a colon carcinoma tumor model was irradiated by RF in the presence of gold-gold sulfide (GGS) nanoshells. Materials and Methods: Synthesis and characterization of GGS nanoshells were initially performed. CT26 cells were ...

Carbon onions have been known since Iijima first observed them in 1980 [1]. In 1992 Ugarte et al. made carbon onions by irradiating carbon soot by an intense electron beam in a transmission electron microscope [2]. There are reports in the literature on the production of carbon structures in water medium by generating an electric arc to create high temperatures [3,4]. It was found that several ...

This is the first report of SERS switching 'on and off' using laser induced plasmonic heating of poly(N-isopropylacrylamide) (PNIPAM) coated hollow gold nanoshells (HGNs). The degree of Raman enhancement for these thermosensitive SERS nanotags was controlled by plasmonic tuning of the properties of the HGNs.