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It is a powerful instrument used in analysis and quantitation of organic volatile and semi-volatile compounds.  The instrument relies on separating mixtures into individual components using a temperature-controlled capillary column and smaller molecules with lower boiling points travel down the column more quickly than larger molecules with higher boiling point.  Mass spectrometry (MS) is used as a detector in identifying various components of the material analyzed using their mass spectra. Each compound has a unique or near unique mass spectrum that can be compared with mass spectral databases and thus identified. 
Funded by: TITLE III-An Agency of Department of Education.

The LabRAM HR Evolution Raman microscopes are ideally suited for both micro and macro measurements, and offer advanced confocal imaging capabilities in 2D and 3D. The true confocal Raman microscope enables the most detailed images and analyses to be obtained with speed and confidence. With guaranteed high performance and intuitive simplicity, the LabRAM HR Evolution is the ultimate instrument for Raman spectroscopy. They are widely used for standard Raman analysis, photoluminescence (PL), Raman and PL mapping and other hybrid methods.

Is a research technique that exploits the magnetic properties of certain atomic nuclei. This type of spectroscopy determines the physical and chemical properties of atoms or the molecules in which they are contained. It relies on the phenomenon of nuclear magnetic resonance and can provide detailed information about the structure, dynamics, reaction state, and chemical environment of molecules. The intramolecular magnetic field around an atom in a molecule changes the resonance frequency, thus giving access to details of the electronic structure of a molecule and its individual functional groups.

SEM is a type of electron microscope that produces images of a sample by scanning the surface with a focused beam of electrons. The electrons interact with atoms in the sample, producing various signals that contain information about the sample's surface topography and composition.

The T-dependent PL setup can characterize the bandgap energy of group IV semiconductor compounds, including germanium-tin (GeSn) and silicon-germanium-tin (SiGeSn) materials at different temperatures from 10 K to 350 K. The spectrometer and detectors are appropriate to measure the PL spectra in a broad range from 600 nm to 5000 nm covering from visible to far infrared. Two lasers, including 532 nm and 1064 nm lasers are the source of excitations.

This technique shines a beam containing many frequencies of light at once and measures how much of that beam is absorbed by the sample. Next, the beam is modified to contain a different combination of frequencies, giving a second data point. This process is repeated many times. Afterward, a computer takes all this data and works backward to infer what the absorption is at each wavelength. Useful for characterization of new materials after synthesis.
Funded byTITLE III-An Agency of Department of Education.


Department of Chemistry and Physics
University of Arkansas at Pine Bluff | 1200 N. University Drive, Mail Slot 4941 | Pine Bluff, Arkansas 71603
Dr. Richard Walker, Interim Chairperson | (870) 575-8894