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. Author manuscript; available in PMC: 2014 Oct 8.
Published in final edited form as: IEEE J Sel Top Quantum Electron. 2014 May/June;20(3):6900806. doi: 10.1109/JSTQE.2014.2301016

Fig. 1.

Fig. 1

Representative SEM images of Pinnularia sp. showing (a) an overview of diatom frustules and (b) nanoscale arrays of primary pores on a frustule with 50–80 nm subpores.