Characterization of Synthetic Hydroxyapatite Fibers Using High-Resolution, Polarized Raman Spectroscopy

High Performance Method for Skin Roughness Detection Using Raman Spectroscopy

Detection and Characterization of Human Teeth Caries Using 2D Correlation Raman Spectroscopy

Background: Carious lesions are formed by a complex process of chemical interaction between dental enamel and its environment. They can cause cavities and pain, and are expensive to fix. It is hard to characterize in vivo as a result of environment factors and remineralization by ions in the oral cavity. Objectives: The development of a technique that gives early diagnosis which is non-invasi...

Dynamic characterization of high frequency MEMS/NEMS using Raman spectroscopy

This paper proposes the development of a Raman spectroscopy system which has capabilities to characterize the motion of high frequency MEMS/NEMS and devices without surface features. Raman spectroscopy is being increasingly used as a technique to characterize such devices to overcome inconveniences of other optical measurement techniques which include laser vibrometer, stroboscopic imaging, int...

Sensitivity enhancement in high resolution stimulated Raman spectroscopy of gases with hollow-core photonic crystal fibers.

We show the first experimental evidence of the sensitivity enhancement that can be achieved in high resolution stimulated Raman spectroscopy of gases using hollow-core photonic crystal fibers (HCPCFs). Using low power cw lasers and a HCPCF containing the gas, we have observed more than four orders of magnitude enhancement of sensitivity when compared with the cw single focus regime, and a simil...

Polymorph Characterization using Raman Spectroscopy in High Throughput Crystallization Studies

Solid dose drugs make up a considerable part of the pharmaceutical market. A solid dose form of a drug can offer long shelf life, convenient ways of drug delivery, and can be packaged into a variety of forms such as capsules, tablets, gel caps, and patches. Polymorphism is the ability of a molecule to exist in more than one stable or meta-stable crystalline state. The distinct crystalline forms...