Raman spectroscopy

Enrollment no: A4450014069 Name: RAVINA KUNDU TOPIC: APPLICATIONS OF RAMAN SPECTROSCOPY An introduction to Raman Spectroscopy (basic theory) EXCITING (RAYLEIGH) LINE ANTI-STOKES LINE

Raman spectroscopy (RS) as a powerful analytical method have widely been employed in characterization of different kinds of chemical species. Discovery of RS dates back to previous century which first proposed by C.V. Raman and his colleague K.S. Krishnan. This scattering technique involves electromagnetic interaction of an incident monochromatic laser beam with molecules of a matter. Each of different vibrational, rotational and other modes of molecular motions in target molecule can alter both

Proposal for experimental study on different flavourings cat medicine by Raman spectroscopy from Mengxin Huang 2411550 CHEM 464 Supervisor: Keith C. Gordon University of Otago, Department of Chemistry 2015   Content Abstract Introduction Raman spectroscopy Principle of Raman spectroscopy Basic Raman scattering process Raman imaging Literature survey: limitations and considerations Effect of refraction Relative Raman scattering intensity Processing of data: multivariate analysis Aims

The Vinland Map: 15th Century Artifact or 20th Century Forgery? Throughout history, the discovery of an ancient artifact has always brought with it much excitement. The idea that we are able to look at something that existed so long ago intrigues us. However, along with the excitement of new discoveries, there is often much controversy. One such discovery, the Vinland Map, has been the cause of much debate since 1957. The Vinland Map, first presented to the public in 1965 in a book written

Results & Discussions: Characterization of photo-catalysts: Raman Spectroscopy: Figure (2) shows the Raman spectrum of prepared activated carbon (AC). The sample shows the characteristic D and G carbon peaks at 1380 cm−1 and 1585 cm−1, respectively. In simple terms, for carbon materials, the D peak intensity correlates with defects in the carbon lattice and is linked to the extent of sp3 hybridization while the G peak arises from the graphitic network and extent of sp2 hybridization. ID/IG = 0

plasma proteins albumin and globulin from mice with gastric cancer and healthy mice using chromatography, then enhancing them with biologically synthesized silver nanoparticles, and finally performing spectral analysis using surface-enhanced Raman spectroscopy, which is expected to provide information-filled, unique signatures of the biochemical components of whole proteins and clear non-overlapping peaks and clusters where the gastric cancer group can be explicitly distinguished from the normal group

this experiment, the nature of linkage isomers will be observed on the example of nitritopentaamminecobalt(III) Chloride and nitropentaamminecobalt(III) Chloride. Their relative stability will be compared on standard conditions and the infrared spectroscopy of both the isomers will be obtained to analyze the characteristic absorption bands for the nitro and nitrito group. Yield for nitritopentamminecobalt(III) Chloride was obtained to be = 1.9221 g(73.24 %) and yield for nitropentamminecobalt(III)

techniques is that they can be destructive, lengthy, and expensive. Additionally, these methods may not be able to identify bone when it is highly fragmented or altered. Therefore, chemical analysis techniques such as HHXRF, XRF, SEM/EDS, PIXE, and Raman Spectroscopy have been proposed for differentiating bone and teeth from non-skeletal material and human from nonhuman skeletal material. Although their use is sporadic and dependent on instrument availability, these chemical techniques have proven valuable

Present there is an enormous deal of scientific attention in the field of Imidazoline derivatives. Imidazoline is a Nitrogen compound and it can be utilized in organic dyes as nitrogenous electron donors since it introduces additional electron donors at position 2. Because of high molar extinction coefficient Imidazoline and other molecular structures containing nitrogen developed as metal free organic dyes. Usually, metal-free organic dyes have the apparent molecular structure of the electron donor

Questions raised: What is the exact technology used to examine the objects in the article? Why did they choose the artifacts in the article specifically? How were they able to figure out the gilding methods? Vocabulary list: 1. photoelectron spectroscopy (XPS)- measuring the chemical composition of an object by the energy of electrons freed from the surface by a laser. (Merriam Webster) 2. secondary ion mass spectrometry (SIMS) -A machine uses primary ions to push the ions in the object to the