A New Mechanism of Raman Enhancement and its Application

Synthesis and characterization of spherical and rod like nanocrystalline Nd2O3 phosphors

“…[22]. The major peaks in both the samples observed are assigned to F g mode and combination of A g + E g [23,24] modes. It is observed that in combustion synthesized sample, Raman peaks are broader and shifted to higher wave number side by about 9 nm when compared to hydrothermal synthesized sample.…”

An investigation of different morphological and structural changes in neodymium hydroxide nanoparticles

“…This causes the population ratio of Nd 3+ between 4 I 11/2 and 4 I 9/2 to deviate from the value allowed by the Boltzmann's law. Raman flux is thus enhanced to push the system back toward equilibrium [11].…”

“…The variations of the f-f transition bands caused by the variation of coordination environment around lanthanide ions are rather subtle, and cannot be revealed without highresolution spectroscopic techniques (Fig. 1a) [7][8][9][10][11]. Recently, we find a new Raman spectra enhancement mechanism feedback electronic Raman enhancement [11][12][13].…”

“…1a) [7][8][9][10][11]. Recently, we find a new Raman spectra enhancement mechanism feedback electronic Raman enhancement [11][12][13]. Because of this enhancement effect (Fig.…”

Surface enhanced Raman spectroscopy and its application to molecular and cellular analysis

“…The chemical mechanism is much less well understood, but is often attributed to a charge transfer intermediate state which takes place at the strong electron coupling between the analyte and the metal surface (Zou and Dong 2006;Brus 2008). There have been many experimental demonstrations confirming that both mechanisms play key roles in SERS effects (Xu et al 2002;Wen and Fang 2005), however it is generally believed that electromagnetic enhancement may play a greater part than chemical enhancement (Kambhampati et al 1999;Moskovits et al 2002;Chen and Choo 2008).…”