Nanopatterning self-assembled nanoparticle superlattices by moulding microdroplets

Cheng, Wenlong and Park, Nokyoung and Walter, M. Todd and Hartman, Mark R. and Luo, Dan. (2008) Nanopatterning self-assembled nanoparticle superlattices by moulding microdroplets. Nature Nanotechnology, 3 (11). p. 682. ISSN 1748-3387

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Highly ordered arrays of nanoparticles exhibit many properties that are not found in their disordered counterparts. However, these nanoparticle superlattices usually form in a far-from-equilibrium dewetting process, which precludes the use of conventional patterning methods owing to a lack of control over the local dewetting dynamics. Here, we report a simple yet efficient approach for patterning such superlattices that involves moulding microdroplets containing the nanoparticles and spatially regulating their dewetting process. This approach can provide rational control over the local nucleation and growth of the nanoparticle superlattices. Using DNA-capped gold nanoparticles as a model system, we have patterned nanoparticle superlattices over large areas into a number of versatile structures with high degrees of internal order, including single-particle-width corrals, single-particle-thickness microdiscs and submicrometre-sized 'supra-crystals'. Remarkably, these features could be addressed by micropatterned electrode arrays, suggesting potential applications in bottom-up nanodevices.

Item Type: Article
Additional Information: Reprinted by permission from Macmillan Publishers Ltd: Nature Nanotechnology (Cheng, Wenlong, et al. "Nanopatterning self-assembled nanoparticle superlattices by moulding microdroplets." Nature Nanotechnology 3 (2008): 682 - 690. ), copyright (2008)
InterNano Taxonomy: Nanomanufacturing Processes > Self Assembly
Nanoscale Objects and Nanostructured Materials > Nanoparticles
Collections: Nanomanufacturing Research Collection
Related URLs:
Depositing User: Rebecca Reznik-Zellen
Date Deposited: 05 Nov 2009 20:31
Last Modified: 05 Nov 2009 20:31

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