Deeder Aurongzeb and Latika Menon 2007 Nanotechnology 18 505102 doi:10.1088/0957-4484/18/50/505102
Deeder Aurongzeb and Latika Menon
Show affiliationsFungal colonies exhibit complex growth patterns depending on the environment. We report the formation of magnetic domains within fungal cells due to the growth of colonies in iron sulfate solution. We find that the initial growth of these colonies on silicon can be described by a roughness exponent of ~0.55 while annealed induced self-assembly has a roughness exponent of ~0.80. The growth mode is consistent with a quenched growth model. We also find high temperature (>600 °C) annealing induced colony parts to form oriented nanostructures with higher saturation magnetization. Using atomic force microscopy we show evidence of thermally induced capillary waves on island surfaces with a van der Waals cutoff wavevector of the order of 10−2 Å−1.
87.15.B- Structure of biomolecules
87.64.Dz Scanning tunneling and atomic force microscopy
Issue 50 (19 December 2007)
Received 24 May 2007, in final form 19 September 2007
Published 20 November 2007
Deeder Aurongzeb and Latika Menon 2007 Nanotechnology 18 505102
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