DiagnosticTool For Organic Liquids
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A Raman spectrometer enables scientists to examine and distinguish a variety of molecular species. Raman studies substances in a variety of forms, including aqueous solutions, slurries, gels, powders, liquids and solids. Mainly because Raman involves no special preparation, the operation may possibly be performed in situ (at its place of origin). Such as, a liquid inside of a medicine bottle can be studied without being taken off from the bottle. The liquid would not be damaged, and the components of the liquid may be determined even through the bottle.
Light that interacts with an object is actually either absorbed, transmitted. With a micro Raman spectrometer, scientists study objects in accordance with the principle of scattered light. Light might scatter elastically without any change in wavelength in a phenomenon referred to as the Rayleigh effect. Light can also scatter inelastically, leading to the Raman effect. Raman spectroscopy studies objects exposed to the Raman effect. The Raman effect ended up being named after Sir C.V. Raman, who witnessed the effect and attained a Nobel Prize for his work in 1930.
Objects subjected to the Raman effect may go through one of two transitions. The photon, or even light particle, might lose its energy, or it may acquire additional energy if this collides with a particle of the substance being studied. Stokes radiation results as soon as the photon will lose energy, and anti-Stokes radiation results when the photon takes up energy. A Raman spectrometer reveals that both Stokes and anti-Stokes radiation show a pattern the same as the molecular vibration of the substance being looked at. Since each substance features its own Raman pattern, the spectrometer may determine the substance based upon its unique Raman fingerprint.
A micro Raman spectrometer has a number of postive aspects over an IR spectrometer. Water features a weak Raman signal, so aqueous samples can be identified by Raman spectroscopy. Furthermore, Raman spectroscopy can simply examine samples through clear containers made of glass or plastic. By using Raman instruments, scientists can potentially identify and quantify substances without any advance preparation of the sample.
A micro Raman spectrometer also has many in vivo applications. Because the fluorescence of buffers and water are removed, Raman spectroscopy can analyze proteins, cells and organs. However, Raman technology in these cases may involve only near-infrared lasers to avoid damaging delicate tissues. As the intensity of near-infrared lasers is so low, collection times has a tendency to be very long. As technology improves and even more sensitive detectors come to be readily available, Raman spectroscopy will have much more general uses. |
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Author Resource:-
With a low-resolution micro Raman spectrometer, scientists are able to study the identifying properties of organic liquids without the significant cost of a high-resolution laser diode. Scientists will continue to unlock many valuable applications for this promising technology. For more information about Raman spectrometer,click the link.
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By :
Corinth James
Submitted
2012-02-07 05:26:30 |
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