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Schematic representation of the DPN procedure used to pattern AgNP ink on a substrate. This procedure is common to other substrates.
(a) Optical microscopy image of the process of bleeding excess AgNP ink with both the cantilever and tip (scale ). (b) Representative AFM topography image of silver dots generated by increasing tip-substrate contact times [(A)–(F)] (scale ). The identification letter, tip contact time, and measured diameter of the dots are (A) , ; (B) , ; (C) , ; (D) , ; (E) , ; (F) , . The image shows the dots postcuring and the dotted line shows the region where the topography line trace was measured. (c) Cross-sectional topography trace of the dots in (b) showing an average feature height of approximately . (d) Average AgNP dot diameter curves plotted as a function of dwell time compared to those of a typical chemisorbed DPN ink (MHA). The error bars represent standard deviations of five AgNP and twelve MHA DPN experiments.
AFM topography image of AgNP lines generated via a tip speed of in a area. (a) linewidth, (b) linewidth, (c) linewidth, and (d) linewidth. The cross-sectional topography traces of (a)–(d) are shown below, while the scale bars in (a)–(d) are each. All lines shown were imaged postcuring.
Comparison of the three different AgNP ink systems used in this work.
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