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. Author manuscript; available in PMC: 2013 May 21.
Published in final edited form as: J Mater Chem. 2012 May 21;22:15702–15709. doi: 10.1039/C2JM31034A

Fig. 1.

Fig. 1

TEM images of the SNTs on wild-type flagella template at different pH values. (a) Curly and coiled bundled SNTs at pH=4. (b) Higher magnification of bundled SNTs coated with a very thin layer of silica. (c) SNTs with sinusoidal waves and coated with a thin layer of silica at pH=8. The flagella before coating silica have similar morphology indicating the in situ transcription of SNTs from original flagella (inset). (d) SNTs with shorter wavelength at pH=9. (e) Curly and coiled monodisperse SNTs at pH=10.5. (f) Close to straight SNTs at pH=11. (g) Typical high magnification images taken from the same samples shown in a-f, respectively. (Scale bar of b, c, d, e, f: 400 nm)