Molecular Spectroscopy

Optical Molecular Spectroscopy in Combination with Artificial Intelligence for Process Analytical Technology

June 01, 2020

Spectroscopy

In celebration of Spectroscopy’s 35th Anniversary, leading experts discuss important issues and challenges in analytical spectroscopy.

Beer Analysis by Total SO2 and Pararosaniline Methods

May 20, 2020

Sponsored Content

This study shows the correlation of an automated discrete analysis Sulfur dioxide method to standardized pararosaline methods in the analysis of beer

The Effect of High Pressure on Ascorbic Acid Structure

May 01, 2020

Spectroscopy

A Raman study of vitamin C, also known as ascorbic acid, is conducted at high pressure to determine phase changes and crystal symmetry through spectral interpretation.

Fully Automated Method for Free Sulfite Analysis in Wine

March 24, 2020

Sponsored Content

This application note presents a high throughput method for free and total sulfite analysis in wine using automated discrete analysis.

Raman Thermometry: Understanding the Mathematics to Better Design Raman Measurements

December 01, 2019

Spectroscopy

Raman measurements can be used to infer the temperature of a material based on the Stokes and anti-Stokes band signal strengths, and by applying a predefined mathematical relationship. In reality, the temperature, Raman shift, and laser excitation wavelength all interact, and should be considered to better understand these measurements.

Gary M. Hieftje’s Legacy: Fifty Years of Scientific Contributions

December 01, 2019

Spectroscopy

A famous and admired professor of analytical chemistry, Gary M. Hieftje, is officially retiring. He has been a prominent faculty member at Indiana University for 50 years, and a beloved mentor, colleague, and friend to many. In this special feature, we take a look at his many contributions, and his broad impact on the field.

The 2019 Emerging Leader in Molecular Spectroscopy Award

October 01, 2019

Spectroscopy

Ishan Barman, this year’s Emerging Leader in Molecular Spectroscopy award recipient, leads a research team combining spectroscopy, imaging, and chemometrics to seek greater understanding of the pathological changes of human cells and tissues.

Measurement of the Temperature Dependence of Water Using a Near-Infrared Raman Spectrograph

June 01, 2019

Spectroscopy

The spectral behavior of water is studied using Raman with an NIR spectrograph and dual wavelength lasers for measurements of both the fingerprint and the OH stretching regions. Raman spectra are recorded between 5 ⁰C and 80 ⁰C, and treated with both band-fitting and the 2D-COS algorithm revealing improved insights into the spectral behavior of water.

Photonics Applications in Environmental Sciences

February 01, 2019

Special Issues

Several spectroscopic measurement techniques are proving to be very effective and versatile for environmental applications.

Tuning the Photoluminescence of Graphene Oxide

February 01, 2019

Special Issues

The emission wavelength of graphene oxide is tuned through photothermal reduction and the spectral shift monitored using photoluminescence spectroscopy to achieve the desired emission.