Figure 5.

SEM images of high molecular weight PMMA mixed with silica sol. Mixing ratio of (a) 2:1, (b) 3:1 of PMMA/silica sol, and (c) the histogram showing the sizes of the corresponding samples.

Lee et al. Nanoscale Research Letters 2012 7:440   doi:10.1186/1556-276X-7-440
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