Raman spectroscopy of colloidal nanoparticles: are we measuring what we think we are measuring?

Raman spectroscopy is often considered as a powerful tool for chemical sensing and imaging and in the times of COVID-19 pandemic is frequently suggested as the way to identify the presence of viral particles in solution. In this report, we evaluate the ability of Raman spectroscopy to quantitatively assess the presence of nanoparticles in colloidal solutions.

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