Multi-shaped silver meso-particles with tunable morphology for surface enhanced Raman scattering

Highly uniform core/shell structures AuR/Ag and AuR/Ag@BSA with various shell thicknesses for surface-enhanced Raman scattering

“…The small gold nanoparticles have a wide spectral band, and the resonance peak is not observed because the particle size is comparable to the excitation wavelength, so the electrons lose their co-phase faster. For the AuRs, the absorption spectrum has two characteristic peaks corresponding to the collective oscillations of the electrons in transverse (short wavelength) and longitudinal (long wavelength) modes of the AuRs [20]. Line (iii) is the characteristic absorption spectrum of the AuR/Ag.…”

“…Therefore, silver nanocrystals offer many interesting applications and exploit many plasmonic effects. In terms of synthesis, silver nanoparticles with different shapes and structures as triangles, prisms, and mesostructures (meatballs, corals, etc) have achieved remarkable achievements [18][19][20]. However, it is a fact that the synthesis of silver nanorods with uniaxial anisotropic structures faces many challenges [21][22][23].…”

Biosynthesis of silver nanoparticles using tea leaf extract (camellia sinensis) for photocatalyst and antibacterial effect

“…In addition, AgNPs are also used in many other outstanding applications such as being used as substrates for surface-enhanced Raman scattering (SERs), detection of organic dyes [ 18 , 27 , 28 ], transmission, delivery of drugs and biomolecules [ [29] , [30] , [31] ], and antibacterial and kill bacteria, kill viruses [ [32] , [33] , [34] ]. Although the antibacterial mechanism of AgNPs is controversial, some of the main mechanisms can be mentioned as follows: (i) AgNPs can release Ag ions which can penetrate the cell wall and cytoplasmic membranes disrupt bacterial envelopes, inactivate respiratory enzymes, disrupt cell membranes, and transform deoxyribonucleic acid (DNA) [ 35 ].…”

Polyol method and surface functionalization of silver nanowires using bovine serum albumin for surface-enhanced Raman scattering application

“…The AgNWs have been used as an alternative material to Indium tin oxide (ITO) in sensors, energy devices, and electronics [5][6][7]. Besides, AgNWs are also a good choice for enhancing surface Raman signals for detecting organic dyes such as other silver nanostructures [8][9][10][11][12][13].…”

“…Besides, we investigate the optical properties of AgNWs after surface functionalizing by BSA molecules and evaluate them by comparing these properties to the modeling method. The application of SERs of branched and unbranched meso silver structures [8,10,25], silver nanorods [11][12][13] in the detection of toxic organic dye has been studied in many of our previous publications. To complement that research system in this paper the obtained AgNWs are used to investigate the effective surface-enhanced Raman scattering applied in detecting the organic pigment methylene blue (MB).…”