Findings from Iowa State University, Department of Chemical and Biological Engineering broaden understanding of analytical chemistry

Fresh data on analytical chemistry are presented in the report "Grating-coupler assisted infrared reflection absorption spectroscopy for the characterization of organic thin films. We demonstrate how grating-coupler assisted infrared reflection absorption spectroscopy can be used to simultaneously determine the chemical identity and relative thickness of organic thin films. With a grating substrate, a threshold anomaly associated with passing off of the -1 diffracted order occurs at grazing angles of incidence, resulting in a sharp absorbance in the infrared," investigators in the United States report.

"The position of this peak is sensitive to the grating geometry as...

Want to see the full article?

• Purchase this article for only $3.00