Cicely Rathmell


In situ Raman Spectroscopy Monitors the Corrosion of Mild Steel in a Salt Fog Chamber

June 01, 2022

In this study, in situ Raman spectroscopy was used to detect the formation, growth, and evolution of corrosion inside a salt fog chamber. These results pave the way for monitoring the real-time observation of corrosion on metal surfaces.

A Dual Nanostructured Approach to SERS Substrates Amenable to Large-Scale Production

June 01, 2021

SERS can amplify Raman signals, but to make the technique practical for industrial use, large quantities of substrate are needed. The approach described here could enable cost-effective, reproducible manufacturing of SERS substrates at large scale.

In Situ Enhancement of Microplastic Raman Signals in Water Using Ultrasonic Capture

June 01, 2020

Of the 78 million tons of plastic packaging manufactured every year, approximately one-third ends up in the ocean, the air, and most foods and beverages. To monitor the proliferation of these plastics, an ultrasonic capture method is demonstrated that produces a 1500-fold enhancement of Raman signals of microplastics in water.

Rapid, Portable Pathogen Detection with Multiplexed SERS-based Nanosensors

June 01, 2019

A new application of surface-enhanced Raman spectroscopy (SERS) is described for quantifying low concentrations of pathogens with high reproducibility. In this novel assay, bacteria are captured and isolated using functionalized metal nanoparticles for rapid optical identification via SERS. Initial tests with a portable SERS system validated the ability to identify the presence of Escherichia coli and methicillin-resistant Staphylococcus aureus bacteria.

Stray Light in Absorbance Measurements

September 13, 2016

In this technical note we discuss the causes and consequences of stray light, and provide suggestions for mitigating its effects in your experimental setup.

SERS for Label-Free Biosensing

August 11, 2015

Surface enhanced Raman spectroscopy (SERS) has expanded the applications of Raman spectroscopy to include trace analysis of materials such as explosives residues, evidence at crime scenes, chemical warfare agents and pesticides. As a label-free technique, SERS is also well suited to biosensing, from blood glucose to diagnosis of diseases like cancer, Alzheimer’s and Parkinson’s.