Wavelength-Dependent Correlations between Ultraviolet–Visible Intensities and Surface Enhanced Raman Spectroscopic Enhancement Factors of Aggregated Gold and Silver Nanoparticles

2014 ◽  
Vol 118 (38) ◽  
pp. 22234-22242 ◽  
Author(s):  
Fathima S. Ameer ◽  
Yadong Zhou ◽  
Shengli Zou ◽  
Dongmao Zhang
Keyword(s):  
Silver Nanoparticles ◽  
Gold And Silver Nanoparticles ◽  
Raman Spectroscopic ◽  
Surface Enhanced ◽  
Enhancement Factors ◽  
Surface Enhanced Raman

Rapid organic solvent extraction coupled with surface enhanced Raman spectroscopic mapping for ultrasensitive quantification of foliarly applied silver nanoparticles in plant leaves

2020 ◽  
Vol 7 (4) ◽  
pp. 1061-1067
Author(s):  
Zhiyun Zhang ◽  
Ming Xia ◽  
Chuanxin Ma ◽  
Huiyuan Guo ◽  
Wenhao Wu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Organic Solvent ◽  
Mapping Technique ◽  
Plant Leaves ◽  
Raman Spectroscopic ◽  
Organic Solvent Extraction ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Spinach Leaf ◽  
Leaf P

An organic solvent-based extraction approach coupled with surface enhanced Raman spectroscopic mapping technique to quantify silver nanoparticles in spinach leaf.

scholarly journals Surface Plasmons and Surface Enhanced Raman Spectra of Aggregated and Alloyed Gold-Silver Nanoparticles

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
Y. Fleger ◽  
M. Rosenbluh
Keyword(s):  
Silver Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Laser Wavelength ◽  
Excitation Wavelength ◽  
Gold And Silver Nanoparticles ◽  
Sers Substrates ◽  
Raman Enhancement ◽  
Gold Silver ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Effects of size, morphology, and composition of gold and silver nanoparticles on surface plasmon resonance (SPR) and surface enhanced Raman spectroscopy (SERS) are studied with the purpose of optimizing SERS substrates. Various gold and silver films made by evaporation and subsequent annealing give different morphologies and compositions of nanoparticles and thus different position of the SPR peak. SERS measurements of 4-mercaptobenzoic acid obtained from these films reveal that the proximity of the SPR peak to the exciting laser wavelength is not the only factor leading to the highest Raman enhancement. Silver nanoparticles evaporated on top of larger gold nanoparticles show higher SERS than gold-silver alloyed nanoparticles, in spite of the fact that the SPR peak of alloyed nanoparticles is narrower and closer to the excitation wavelength. The highest Raman enhancement was obtained for substrates with a two-peak particle size distribution for excitation wavelengths close to the SPR.

Surface-enhanced Raman imaging of cell membrane by a highly homogeneous and isotropic silver nanostructure

Nanoscale ◽  
2015 ◽  
Vol 7 (18) ◽  
pp. 8593-8606 ◽  
Author(s):  
Gianluigi Zito ◽  
Giulia Rusciano ◽  
Giuseppe Pesce ◽  
Alden Dochshanov ◽  
Antonio Sasso
Keyword(s):  
Silver Nanoparticles ◽  
Free Surface ◽  
Cell Membrane ◽  
Blood Cell ◽  
Label Free ◽  
Raman Spectroscopic ◽  
Silver Nanostructure ◽  
Plasmonic Nanostructure ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Label-free, surface-enhanced Raman spectroscopic imaging of the challenging red blood cell membrane is achieved by using a near-hyperuniform disordered plasmonic nanostructure of silver nanoparticles.

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