Menú secundario

Spectroscopy Service

Micro-Raman Spectroscopy

Responsable/s Científico/s
Dr. Juan Carlos Sánchez López, Dr. Hernán Míguez García, Dr. Miguel Angel Centeno Gallego

Técnico/s
Dr. Miguel Angel Avilés Escaño

Teléfono/s
954 48 95 43 - 954 48 95 81 - 954 48 95 76

Fax
954 46 06 65

Contacto
jcslopez@icmse.csic.es , h.miguez@csic.es, centeno@icmse.csic.es

Raman spectroscopy is based on a photonic process in which the incident radiation is dis-persed by the sample. This latter is perturbed leading to vibrational and rotational transitions. In general, the Raman spectrum is interpreted like a vibrational one, providing information very similar to the infrared spectroscopy, although the Raman active vibrations are not always the same as those excited with infrared radiation. A Raman vibration mode is active if there is a change of polarizability of the chemical bonds or the considered molecule, which in turn results in the generation of induced dipolar momentam. Its application fields are very broad: semiconductors, carbon compounds (graphite, diamond, nanotubes, fibers…), catalysts, pigments, etc.

Available Equipment

  • LabRAM Horiba Jobin Yvon equipped with a confocal microscope and 3 excitation lasers (785 cm-1 red, 532 cm-1 green, and 325 cm-1 UV)


Infrared Spectroscopies

Responsable/s Científico/s
Dr. Manuel Ocaña Jurado, Dr. Ángel Barranco Quero

Técnico/s
Dr. Miguel Angel Avilés Escaño

Teléfono/s
954 48 95 39

Fax
954 46 06 65

Contacto
mjurado@icmse.csic.es, angelbar@icmse.csic.es

Infrared spectroscopy (FT-IR) is based on the selective absorption of the infrared radiation by the materials. This absorption means a change in the vibrational energy of the chemical bonds, whenever it occurs a change in the polarization. The result is a spectrum showing the absorbed or transmitted radiation as a function of the wavenumber of the radiation, which can be assigned to the corresponding chemical bound.

The equipment at the ICMS works in a wavenumber range from 5000 to 250 cm-1 (CsI optic), and can operate with a gas purge or in vacuum. It is equipped with several accessories to do Diffuse Reflectance (DRIFT), Attenuated Total Reflectance (ATR) or Specular Reflectance. It has got an Infrared Microscope with a lateral resolution of 10 µm.

Available Equipment

  • JASCO FT/IR-6200 IRT-5000


Ultraviolet-Visible Spectroscopies

Responsable/s Científico/s
Hernán Ruy Míguez García

Técnico/s
Dr. Miguel Angel Avilés Escaño

Teléfono/s
954 48 95 39

Fax
954 46 01 65

Contacto
h.miguez@csic.es, maviles@icmse.csic.es

The Ultraviolet-Visible Spectroscopy (UV-Vis) reports on the existing energy differences be-tween the more external occupied electronic levels and the nearer unoccupied ones.

There are two equipments in the laboratory, which work in the wavelength range of 190 nm to 900 nm. It can operate in the Transmission mode or in Diffuse Reflectance Modes.

Available Equipment

  • Cary 5000+UMA (Universal Measurement Accessory)
  • Cary 300
  • SHIMADZU UV-2101 PC
  • ​Perkin Elmer Lambda 12