chiropractic spectroscopy in filed of science.pptx

evaluation of the spectrometry

1. Subject: Spectroscopic Methods and Structure Elucidation of Natural Products MPC-707

2.   X-RAY MACHINE An x ray machine is a complex device used in variety of circumstances around the world. With the ability to penetrate hard objects, they are used for purposes such as air port security check points to see into backs, or in the medical community to look for broken bones or problems within the body.

3. Multiple Body Parts X-Rays Images

4. Chiro-optical: A research group at the Institute for Molecular Science has successfully observed the left and right handedness of material structures at the nanoscale, by illuminating chiral gold nanostructures with circularly polarized light and detecting the optical force acting on a probe near the nanostructures. This result demonstrated that it is possible to analyze the chiral structure of matter at the nanoscale using light.

5. chirooptical spectroscopy Spectroscopy making use of the properties of chiral substances when they interact with polarized light of various wavelengths. Optical rotatory dispersion (the change of optical rotation with wavelength) and circular dichroism are old examples of chirooptical spectroscopy. More recent types of chirooptical spectroscopy are vibrational optical rotatory dispersion, vibrational circular dichroism . (VCD), and Raman optical activity (ROA), which are all the result of the interaction between chiral substances and polarized infrared electromagnetic radiation; these techniques are known as  vibrational optical activity  (VOA), as they are associated with transitions in the vibrational energy levels in the electronic ground state of a molecule. Chirooptical spectroscopy is used in the analysis of the structure of molecules.

6. Asymmetric Scattering of Mirror-Symmetric Radiation from Nanostructures Coupled to Chiral Films The interaction of radiation with chiral molecular films is not macroscopically invariant under mirror reflections and, accordingly, chiro -optical effects exist which affect the spatial symmetry of the radiation profile and which almost exclusively show up in the near field due to the large mismatch between molecule size and wavelength size. Here we prove that the scattering of a mirror-symmetric pair of plane waves by a nanowire lying on a chiral nanofilm is not mirror-symmetric with an angular dissymmetry factor that can be as large as a few tenths. Due to evanescent coupling, the nanowire efficiently experiences molecular chirality which produces a spatially asymmetric near field so that the self-consistent unbalanced excitation of nanowire photonic modes with opposite angular momenta yields asymmetric far-field interference. In addition to enriching the physical understanding of mirror symmetry breaking in chiral nanophotonics , our results could suggest ultra-efficient schemes for enantiomeric discrimination which is essential in biological chemistry and pharmacology.

7. References Ciattoni , A. (2022). Asymmetric Scattering of Mirror-Symmetric Radiation from Nanostructures Coupled to Chiral Films.  Physical Review Applied ,  17 (3), 034005.