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. 2015 Aug 24;5:13366. doi: 10.1038/srep13366

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Inline graphic — Only seven representative spectra are shown in the figure. Each spectrum is shifted in y-direction for clarity. The inset shows the difference Raman spectra against the spectrum taken at 110 K.

Only seven representative spectra are shown in the figure. Each spectrum is shifted in y-direction for clarity. The inset shows the difference Raman spectra against the spectrum taken at 110 K.