(a) Schematic illustration of the fabrication of self-assembled stamps using nanosphere lithography. (b) SEM image of a self-assembled stamp showing that it contains large area arrays of nanopillars matching the initial spin cast latex nanospheres. (c) SEM image showing the nanopillars on a typical self-assembled stamp after the latex spheres had been dissolved.
Representative TEM BF images of the four SAF samples analyzed in the present study. Samples A–C are constructed out of self-assembled stamps. Sample D consists of particles fabricated from the master stamp patterned by e-beam lithography.
Particle size distribution plots of the four SAF nanoparticle samples analyzed in the present study, showing the remarkable uniformity of the SAFs fabricated using the master stamp, although with significantly larger dimensions.
Magnetic hysteresis loops of sample A before and after ion milling, and after the particles had been released in water. There is a reduction in the saturation field and an increase in the openness of the magnetic hysteresis loop in high field regions for the latter.
(a) Dimensions of the two self-assembled stamps that were used in this study. (b) List of particles, stamps from which they were fabricated and their associated processing conditions.
SAF nanoparticle size distribution statistics.
ratios of the four samples before ion mill, after ion mill and after release in water.
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