Classifying nano particles with deep learning
<p>Ordinary Raman spectroscopy could be used to detect bacteria, in principle. In practise the concentrations of the associated molecules are so low, the signals overshadowed by other effects.</p>
<p>This is where SERS and the nano particles come in. When struck with light of certain frequencies, nanoparticles can induce a plasmon resonance. This resonance can give rise to a strong magnification (1000–100 000x) of parts of the Raman spectrum.</p>
<p>Several academic papers describe how they used Surface Enhanced Raman Spectroscopy to distinguish bacterial species from colonies grown on a Petri dish. The nature of SERS enhancement depends however on the characteristics of the nano particles than are being used.</p>
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