2nd MRN

Abstract

Abstract information

English title:	Materials characterization techniques
Spanish title:	T�cnicas de caracterizaci�n de materiales
English abstract:	The Atomic and Molecular Spectroscopy Laboratory has a variety of equipment that allows the characterization of materials in liquid and solid phases. The first technique is inductively coupled plasma atomic emission spectroscopy, an elemental analysis technique that allows the establishment of the composition of a sample or the presence of contaminants at the trace level, parts per million, and, in some cases, parts per billion. Other techniques are vibrational in nature and allow the identification of present functional groups. Fourier transforms infrared spectroscopy with extended range (400 cm-1 - 12000 cm-1) with different variants: transmission, fully attenuated reflectance single pass (diamond crystal), multipass with variable angle, diffuse reflectance, and photoacoustics. Raman spectroscopy, two confocal microscopes with a working range of 50 cm-1 - 4000 cm-1, 10X, 50X, 100X objectives, and 1cm-1 resolution are available; being confocal, it allows the construction of chemical images of a sample with a lateral resolution of 0.2 μm. Other techniques that are in daily use are UV-Vis absorption spectroscopy, with an integrating sphere, spectrofluorometer with a range (of 200 nm - 1600 nm) and availability to work with liquid and solid samples; dynamic light scattering with a range of 5 nm - 3 μm, fluorescence microscope with a camera and four cubes to select wavelength ranges. Additionally, other laboratories at the university have techniques such as X-ray photoelectron spectroscopy, X-ray diffraction, and scanning electron microscope.
Spanish abstract:	El laboratorio de Espectroscop�a At�mica y Molecular dispone de variedad de equipos que permiten caracterizar materiales en fase l�quida y s�lida. La primera t�cnica es espectroscopia de emisi�n at�mica con plasma acoplado inductivamente, la cual, es una t�cnica de an�lisis elemental que permite establecer la composici�n de una muestra o la presencia de contaminantes en el nivel de trazas, partes por mill�n y en algunos casos partes por bill�n. Otras t�cnicas son de car�cter vibracional y permiten identificar grupos funcionales presentes. Espectroscop�a infrarroja con transformada de Fourier con rango extendido (400 cm-1 - 12000 cm-1) con diferentes variantes: transmisi�n, reflectancia totalmente atenuada de un solo paso (cristal de diamante) y multipaso con �ngulo variable (seleniuro de zinc), reflectancia difusa, fotoac�stica. Espectroscop�a Raman, se dispone de dos microscopios confocales con rango de trabajo 50 cm-1 - 4000 cm-1, con objetivos 10X, 50X, 100X y resoluci�n de 1cm-1; al ser confocal, permite construir im�genes qu�micas de una muestra, con resoluci�n lateral de 0.2 μm. Otras t�cnicas que son de uso cotidiano son la espectroscop�a de absorci�n, con esfera integradora, espectrofluor�metro con rango (200 nm - 1600 nm) y disponibilidad para trabajar muestras l�quidas y s�lidas, dispersi�n din�mica de luz con rango 5 nm - 3 μm, microscopio de fluorescencia con c�mara y cuatro cubos para seleccionar rangos de longitudes de onda. Adicionalmente, en otros laboratorios de la universidad se tienen t�cnicas como: Espectroscop�a de fotoelectrones de rayos X, difracci�n de rayos X y microscopio electr�nico de barrido.
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Authors

Name	Institution	Email
Enrique Mej�a-Ospino	Universidad Industrial Santander	emejia@uis.edu.co
Rafael Cabanzo Hern�ndez	Universidad Industrial de Santander	rcabanzo@uis.edu.co

Presentation

Room:	Principal Room
Date:	August 9, 2024
Hour:	11:20 - 11:40

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2^nd MRN

Second Meeting of Materials Science, Engineering and Nanotechnology Researchers Network

Previous editions:

1^st MRN

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