The sizes of pour and nanoparticles are increased with an increase in implantation dose. Acoustic vibrations generated by laser irradiation in silver nanoparticles of various sizes are registered by low-temperature Raman spectra of composite material....
In this paper, Raman spectra of hepatocellular carcinoma cells were analyzed using gold and silver nanoparticles as SERS active substrates. The size of gold and silver nanoparticles is about 50-60 nm, and these nanoparticles have enhancement role to the Raman spectrum of hepatocellular carcinoma cells...
between colloidal silver nanoparticles and silver piece is presented.The Raman signal shows a104enhancement compared to that of bulk GO.The large Raman enhancement is most likely a result of electromagnetic(EM)coupling between the colloidal silver nanoparticles(localized surface plasmon)and the silver ...
Raman spectra of individual carbon nanotubes are measured by scanning a focused laser spot (0.5μmdiameter) over a large area(100μm2)before and after depositing silver nanoparticles. Local regions exhibiting surface enhanced Raman spectroscopy (SERS) were located with respect to a lithographically ...
I. Khan, in Encyclopedia of Analytical Science (Second Edition), 2005 Intracellular SERS SERS from living cells has been reported using several techniques. Etched and silver-coated glass fiber tips have been used as the SERS substrate, allowing the recording of spectra of biological samples, such...
ZnSe nanoparticles were synthesized by using a thermal evaporation method for a vapour phase reaction of zinc and selenium sources. The sample was characterized by XRD, TEM, HRTEM and Raman spectroscopy. Raman spectra of longitudinal-optical (LO) like mode was analysed by a macroscopic continuum ...
types of crystalline silver nanostructures including nanoparticles, nanowires, nanocubes, and bipyramids are synthesized by a solvothermal method by reducing silver nitrate with ethylene glycol using poly(vinylpyrrolidone) as an adsorption agent and adding different quantities of sodium chloride to the ...
Meanwhile, the LSP resonances of Ag nanoparticles exhibit a 10nm redshift and a 13nm broadening by the presence of graphene, which can be attributed to the coupling between the Ag LSPs and the graphene. 展开 关键词: Experimental/ graphene nanoparticles particle size red shift silver spectral ...
A. Anomalously intense Raman spectra of pyridine at a silver electrode. J. Am. Chem. Soc. 99, 5215–5217 (1977). Article CAS Google Scholar Nie, S. & Emory, S. R. Probing single molecules and single nanoparticles by surface-enhanced Raman scattering. Science 275, 1102–1106 (1997). ...
Visible photoluminescence (PL) broad bands are observed in the Raman spectra of SiC nanoparticles (np-SiC) with diameters ranging from 10 to 25 nm. The phenomenon is studied versus the particle size, chemical composition, annealing, and oxidation treatments. In the case of quasistoichiometric np-...