PDF4PRO ⚡AMP

Modern search engine that looking for books and documents around the web

Example: bankruptcy

Raman spectroscopy

Raman spectroscopyInformation from Raman SpectroscopycharacteristicRaman frequenciescomposition MoS2,MoO3changes infrequency ofRaman Si 10 cm-1 shift per% strainpolarisation ofRaman peakcrystal symmetry orientation of CVDdiamond grainswidth of Ramanpeakquality amount of plasticdeformationparallelperpendiculari ntensity ofRaman peakamount thickness oftransparent coatingThe coupling of a Raman spectrometer withan optical microscope provides a number ofadvantages:1) Confocal Light collection2) High lateral spatial resolution3) Excellent depth resolution4) Large solid collection angle for theRaman lightCollecting the lightThe basic function of a Raman system Deliver the laser to the sampling point With low power loss through the system Illuminating an area consistent with sampling dimensions Provide a selection/choice of laser wavelengths Collect the Raman scatter High aperture High efficiency optics High level of rejection of the scattered laser light Disperse the scattered light Short wavelength excitation requires high dispersion spectrometers Detect the scattered light Graphically / mathematically present the spectral dataLaser

Raman spectroscopy Information from Raman Spectroscopy characteristic Raman frequencies composition of material e.g. MoS 2, MoO 3 changes in frequency of Raman peak stress/strai n state e.g. Si 10 cm-1 shift per % strain polarisation of Raman peak crystal symmetry and orientation e.g. orientation of CVD diamond grains width of Raman peak ...

Loading..

Tags:

  Spectroscopy

Information

Domain:

Source:

Link to this page:

Please notify us if you found a problem with this document:

Spam in document Broken preview Other abuse

Transcription of Raman spectroscopy

Related search queries