Figure 1 | Scientific Reports

Figure 1

From: Oral Mucosal Epithelial Cells Grown on Porous Silicon Membrane for Transfer to the Rat Eye

Figure 1

Characterization of pSi membrane materials. (ac) Scanning electron micrographs of typical pSi membrane: (a) cross-sectional thickness, scale bar 100 µm; (b) surface pore structure en face, scale bar 1 µm; (c) pore structure extending through membrane, scale bar 1 µm. (d,e) Time-of-flight secondary ion mass spectrometry: (d) Normalised intensity of the C2H2N+ fragment ion (amine) on pSi membrane and aminosilanised pSi membrane (pSi-NH2) surfaces; (e) Normalised intensity of the C9H8N+ immonium ion on aminosilanised pSi membrane (pSi-NH2) coated with collagen-IV (COL), vitronectin (VTN), and collagen-IV plus vitronectin (COL-IV/VTN), indicative of surface loading.

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