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. 2014 Sep 5;9(9):e106541. doi: 10.1371/journal.pone.0106541

Figure 1. Ordered gradient algorithm for continuously changing density in Digital Nanodot Gradients (DNGs) using a unit cell approach.

Figure 1

(A) Schematic of a linear DNG and unit cell parameters for the ith column of nanodots. (B) Calculation of unit cell dimensions at each position through an iterative process using the cumulative sum of unit cell dimensions to determine position along the length.