Eunah Lee

Articles

Characterizing Microplastic Fibers Using Raman Spectroscopy

June 01, 2019

In this study, macro- and microscopic Raman spectroscopy were used to identify different commercial microplastic fibers using measured spectra with database searches. Raman microscopy is demonstrated as a powerful technique for microplastic fiber characterization, especially for samples that contain mixtures of components, including multiple polymers, or additives.

Statistical, Morphological, and Chemical Particle Characterization of Cellulose Nitrate Filters for QC

September 01, 2015

Statistical and morphological analysis of particles on a filter has been complemented by chemical analysis based on Raman spectroscopy using the ParticleFinder tool, allowing further insight into the particle composition and its origin within a production line.

Direct Identification of Clinically Relevant Microorganisms on Solid Culture Media by Raman Spectroscopy

September 01, 2015

Evaluation of the discrimination power of Raman spectroscopy in decreasing turnaround time in clinical diagnosis, when analyzing microcolonies from nine bacterial and one yeast species directly on solid culture medium after a shortened incubation time.

Transmission Raman: A Method for Quantifying Bulk Materials

June 01, 2010

The motivation for the development of an instrument for transmission Raman measurements is described. The basic instrumentation and the first results from a commercial system are provided. Transmission Raman spectroscopy (TRS) performance is compared to and contrasted with that of a confocal Raman microscope.

Transmission Raman Offers Improved Quantitation of Pharmaceutical Solids

June 01, 2009

Manufacturing control of pharmaceutical solids requires routine measurement of content uniformity. Because of the high information content in Raman spectra, it has been considered a candidate technology for making these measurements.

Molecular Spectroscopy Workbench Near-infrared Chemical Imaging and the PAT Initiative (PDF)

April 01, 2004

NIR-CI adds a completely new dimension to conventional spectroscopy.