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Inside the Laboratory: How Computational Approaches Can Improve Understanding of Molecular Behavior
August 29th 2025In Part 2 of this “Inside the Laboratory,” feature on George Shields, a professor of chemistry at Furman University and the founder and director of the Molecular Education and Research Consortium in Undergraduate Computational ChemistRY (MERCURY), Consortium, we discuss his research into computational approaches to improve our understanding of molecular behavior in both biochemistry and atmospheric chemistry and his work applying replica exchange molecular dynamics (REMD) for breast cancer drug design.
Smarter Spectroscopy With a New Machine Learning Approach to Estimate Prediction Uncertainty
August 27th 2025A new study demonstrates how a machine learning technique, quantile regression forest, can provide both accurate predictions and sample-specific uncertainty estimates from infrared spectroscopic data. The work was applied to soil and agricultural samples, highlighting its value for chemometric modeling.
Infrared Spectroscopy Emerges as Key Tool for Identifying Plant-Based Milk Alternatives
August 26th 2025A new study demonstrates that infrared spectroscopy combined with chemometric modeling offers a fast, cost-effective way to classify plant-based milk alternatives and detect compositional variability, particularly in almond beverages.
Earle K. Plyler: Setting the Standard in Infrared Spectroscopy
August 26th 2025This Icons of Spectroscopy Series article features Infrared pioneer Earle Keith Plyler (1897–1976), who transformed molecular spectroscopy—building precision techniques, reference data, and instruments that set enduring methods and standards at the National Bureau of Standards (NBS, now NIST). As a teacher and mentor, he established a generation of leaders in molecular spectroscopy.
Error Bars in Chemometrics: What Do They Really Mean?
August 25th 2025This tutorial contrasts classical analytical error propagation with modern Bayesian and resampling approaches, including bootstrapping and jackknifing. Uncertainty estimation in multivariate calibration remains an unsolved problem in spectroscopy, as traditional, Bayesian, and resampling approaches yield differing error bars for chemometric models like PLS and PCR, highlighting the need for deeper theoretical and practical solutions.
Advanced Spectroscopy Techniques Improve Microplastics Identification and Characterization
August 21st 2025Researchers from Brazil have developed an improved method combining infrared and Raman spectroscopic techniques to better identify and characterize microplastics. This integrated approach enhances accuracy in distinguishing various polymer types and provides refined spectral analysis crucial for environmental studies.
Raman Spectroscopy and Machine Learning Show Promise for PFAS Detection
August 21st 2025Raman spectroscopy, combined with computational modeling and machine learning, shows strong potential for distinguishing PFAS compounds, offering a promising new framework for environmental monitoring and contamination analysis.
New Technique Combines Raman Spectroscopy and AI to Accurately Detect Microplastics in Water
August 19th 2025Researchers have developed a novel approach to quantify microplastics in water environments by combining Raman spectroscopy with convolutional neural networks (CNN). This integrated method enhances the accuracy and speed of microplastic identification, offering a promising tool for environmental monitoring.