Science, asked by mominmohsina1789, 1 year ago

Applications of raman effect in daily life

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Answered by viswa5
7
Raman spectroscopy is used in many varied fields – in fact, any application where non-destructive, microscopic, chemical analysis and imaging is required.  Whether the goal is qualitative or quantitative data, Raman analysis can provide key information easily and quickly.  It can be used to rapidly characterise the chemical composition and structure of a sample, whether solid, liquid, gas, gel, slurry or powder.

The discussion below highlights some key areas where the use of Raman is well established, and its value greatly appreciated.  For more detail, and information about other uses of Raman please see our Raman applications section.

 

Pharmaceuticals and Cosmetics

Raman spectral image of pharmaceutical tablet, showing distribution of four major components

Compound distribution in tabletsBlend uniformityHigh throughput screeningAPI concentrationPowder content and purityRaw material verificationPolymorphic formsCrystallinityContaminant identificationCombinatorial chemistryIn vivo analysis and skin depth profiling

 

Geology and Mineralogy

Raman spectra of (top to bottom) olivine, apatite, garnet and gypsum illustrating how Raman can be used for fast mineral ID.

Gemstone and mineral identificationFluid inclusionsMineral and phase distribution in rock sectionsPhase transitionsMineral behaviour under extreme conditions

 

Carbon Materials

Peak fitting of the D and G bands in a DLC spectrum

Single walled carbon nanotubes (SWCNTs)Purity of carbon nanotubes (CNTs)Electrical properties of carbon nanotubes (CNTs)sp2 and sp3 structure in carbon materialsHard disk drivesDiamond like carbon (DLC) coating propertiesDefect/disorder analysis in carbon materialsDiamond quality and provenance

 

Semiconductors

Photoluminescence image of a 3” MQW semiconductor wafer, showing variation of emission peak width

Characterisation of intrinsic stress/strainPurityAlloy compositionContamination identificationSuperlattice structureDefect analysisHetero-structuresDoping effectsPhotoluminescence micro-analysis

 

Life Sciences

Multivariate clustering of spectra acquired from three bacterial species, illustrating how Raman can be used to characterise and distinguish bacteria at the single cell level.

Bio-compatibilityDNA/RNA analysisDrug/cell interactionsPhotodynamic therapy (PDT)Metabolic accretionsDisease diagnosisSingle cell analysisCell sortingCharacterisation of bio-moleculesBone structure

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