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Graphene is the two-dimensional building block for carbon allotropes of every other dimensionality. We show that its electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers. ...

Raman spectra are reported from single crystals of graphite and other graphite materials. Single crystals of graphite show one single line at 1575 cm−1. For the other materials like stress-annealed pyrolitic graphite, ...

"The inclusion of self-steepening in the linear stability analysis of modulation instability (MI) leads to a power cutoff above which the MI gain vanishes. Under these conditions, MI in mid-IR waveguides is shown to give...

"We show that, under certain conditions, modulation instability in nonlinear waveguides gives rise to the usual double-sideband spectral structure, but with a Raman gain profile. This process is enabled by the energy tra...

"We propose a novel and simple method for estimating the fractional Raman contribution, fR, based on an analysis of a full model of modulation instability (MI) in waveguides. An analytical expression relating fR to the ...

"By means of theoretical analysis and numerical simulations, we show a tunable Raman gain which may find applications in a variety of fields, ranging from mid-IR fiber Raman lasers and supercontinuum generation to ultra-...

Raman spectroscopy in combination with partial least-squares (PLS) regression method was developed for sulphamethoxazole (SMZ) and trimethoprim (TMP) simultaneous determination in powder mixtures. The calibration set was...

The model and theoretical understanding of the Raman spectra in disordered and amorphous carbon are given. The nature of the G and D vibration modes in graphite is analyzed in terms of the resonant excitation of \ensurem...

Optical detection and spectroscopy of single molecules and single nanoparticles have been achieved at room temperature with the use of surface-enhanced Raman scattering. Individual silver colloidal nanoparticles were scr...

"Pulse propagation in nonlinear waveguides is most frequently modeled by resorting to the generalized nonlinear Schrödinger equation (GNLSE). In recent times, exciting new materials with peculiar nonlinear properties, s...

Un complejo de cobre (II) con el amino ácido L-triptofano, de estequiometría Cu(Trp)2, fue obtenido de solución acuosa. Sus características estructurales fueron deducidas en base a un pormenorizado análisis de sus e...

The influence of the nonionic surfactant lauryl alcohol ethoxylate with 12 moles ethylene oxide (LAE-12OE) was evaluated on the Stratum corneum model biomembrane (SCMM) of shed snake skin (Bothrops jararaca and Spilotes ...

Recientemente se ha demostrado que el bis(pirrolidinio-N-carboditioato)-oxovanadio (IV) es un complejo con actividad insulino-mimética, administrable oralmente. A efectos de facilitar la caracterización y rápida ident...

Se registraron los espectros de infrarrojo y Raman del complejo del título, la especie estequiométricamente más sencilla presente en el fármaco comunmente llamado subcitrato de bismuto coloidal, y se los discute en r...

We present the synthesis of three Mg(II) complexes potentially useful for magnesium supplementation in human and veterinary medicine: magnesium chloro-aspartate, Mg(C4H604N)Cl.3H2O; magnesium citrate, [Mg(H2O)6][MgC6H5O7...

Copper compounds and, in particular, Cu(II) complexes show relevant pharmacological interest. Copper complexes of most of the simplest amino acids showed a particular relevance, appearing even useful for copper supplemen...

Se registraron los espectros de infrarojo y Raman del complejo del título y se los discutió brevemente en base a sus carcaterísticas estructurales. Se hacen algunas comparaciones con otros complejos de Cu (II)/amino ...

Se registraron los espectros de infrarrojo y Raman de los complejos de Cu(II) con L-prolina (L-pro) [Cu(L-pro)2]2.5H2O y [Cu(L-pro)(H2O)Cl] y se los analizó en relación a sus peculiaridades estructurales y por comparac...

The FTIR and FT-Raman spectra of the gallium(III) complex of 3-hydroxy-2-methyl-4-pyrone (maltol), tris(maltolato)gallium(III), a new very promising antitumoral drug, were recorded and briefly discussed by comparison wit...

Se registraron los espectros de infrarojo y Raman del complejo CU y se los discutió someramente en base a sus características estructurales. Con fines comparativos se investigó también el complejo isoestructural de ...

Se registraron los espectros infrarrojo y Raman del compuesto del título y se propone una asignación vibracional aproximada para el mismo. Su comportamiento térmico fue investigado mediante mediciones termogravimétri...

El complejo dimérico de cobre(II) del ácido hipúrico (Hhipp) de estequiometría [Cu2(hipp)4(H2O)4].2H2O fue caracterizado detalladamente por espectroscopia de infrarrojo, Raman y electrónica. Los espectros pudieron s...