Correction to: Nanoscale Res Lett

Following publication of the original article [1], the authors flagged that there was unfortunately an error with Fig. 3 of the article.

The error was that the preceding figure, Fig. 2, had been duplicated, duplicating in place of the figure (not including the caption) of Fig. 3. That is, Fig. 3 had been replaced by a duplicate of Fig. 2 through an erroneous error in the production of the article.

Please be advised that the original article has now been updated to correct this error.

The publisher apologizes for this processing error.