Scientists and engineers have dreamed for decades of fast, low-cost, reliable, and multi-component nanopatterning techniques for printing functional colloidal nanoparticles. Although countless efforts have been devoted, it is still a daunting challenge to organize different nanocomponents into a predefined structure with nanometer precision over millimeter scale without forming defects. We have developed a nanoprinting technique, which utilizes a tip-based high-voltage writing process to generate nanoscale charged patterns on the substrates. This process not only enables electrostatic trapping but also creates a high local surface potential in contrast to the uncharged area, both favoring highly efficient site-specific NP assembly. With this method, we can printa variety of functional colloidal nanoparticles  into any arbitrarily defined patterns with a 200 nm (or smaller) pitch (125,000 DPI), 30 nm (or larger) pixel size, 10 nm position accuracy, over millimeter scale, with minimum error (error ratio &lt; 2×10<sup>-6</sup>).

High-resolution combinatorial patterning of functional nanoparticles

ACS Spring Meeting 2021

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.