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Fig. 1 | Nanoscale Research Letters

Fig. 1

From: Bioengineered Silicon Diatoms: Adding Photonic Features to a Nanostructured Semiconductive Material for Biomolecular Sensing

Fig. 1

a SEM image of a silicon diatom (scale bar 3 μm): the red square underlines the region where AFM and EFM characterizations were performed. b AFM topography (scale bar 2 μm). EFM amplitude at tip bias voltage 0 V (c) and 10 V (d) (scale bar 2 μm): sample morphology appears only at 10 V bias voltage; EFM amplitude distribution at tip bias voltage 0 V (e) and 10 V (f): the Gaussian distribution shows that the average level rises when a voltage of 10 V is applied, indicating the conducting or semiconducting nature of the sample

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