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. 2016 Oct 7;6:33050. doi: 10.1038/srep33050

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Copyright © 2016, The Author(s)

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SEM characterization of 2 distinct types of DE frustule fragments with unique geometries (a,b), lower-magnification SEM of the powder made up of DE (c), the corresponding geometries of nanoSi structures derived from DE frustules (d,e), and lower magnification SEM of the powder made up of DE-derived nanoSi (f).