Figure 5.

FTIR transmittance spectra of SiNWs. The sample was initially etched for 60 min and then subjected to different chemical treatments (as-grown (spectrum 1 - black), after an HF dip (spectrum 2 - red), after HF/piranha (spectrum 3 - blue), and after HF/piranha/HF (spectrum 4 - wine)).

Leontis et al. Nanoscale Research Letters 2013 8:383   doi:10.1186/1556-276X-8-383
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