Dewetting self-assembly of nanoparticles into hexagonal array of nanorings

Suematsu, Nobuhiko J.; Ogawa, Yumi; Yamamoto, Yasuhiko; Yamaguchi, Tomohiko

doi:10.1016/j.jcis.2007.02.037

Cited by 47 publications

(36 citation statements)

References 33 publications

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“…These forces include (1) particle-particle forces (van der Waals and repulsive forces), (2) particle-template forces 5, 6 (electrostatic, and curvature driven 28,29 forces), and (3) particle-fluid forces (capillary 12,15,17,18,19,20,21,22,23 , convective 24,25 , evaporative 26,27,28 , and Brownian 14, 15 forces). All of these forces interact at the contact line in directed (templated) self-assembly.…”

Section: Introductionmentioning

confidence: 99%

Directed Self-Assembly of sub-10 nm Particles: Role of Driving Forces and Template Geometry in Packing and Ordering

et al. 2015

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By comparing the magnitude of forces, a directed self-assembly mechanism has been suggested previously in which immersion capillary is the only driving force responsible for packing and ordering of nanoparticles, which occur only after the meniscus recedes. However, this mechanism is insufficient to explain vacancies formed by directed self-assembly at low particle concentrations. Utilizing experiments, and Monte Carlo and Brownian dynamics simulations, we developed a theoretical model based on a new proposed mechanism. In our proposed mechanism, the competing driving forces controlling the packing and ordering of sub-10 nm particles are (1) the repulsive component of the pair potential and (2) the attractive capillary forces, both of which apply at the contact line. The repulsive force arises from the high particle concentration, and the attractive force is caused by the surface tension at the contact line. Our theoretical model also indicates that the major part of packing and ordering of nanoparticles occurs before the meniscus recedes. Furthermore, utilizing our model, we are able to predict the various self-assembly configurations of particles as their size increases. These results lay out the interplay between driving forces during directed self-assembly, motivating a better template design now that we know the importance and the dominating driving forces in each regime of particle size.

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Section: Introductionmentioning

confidence: 99%

Directed Self-Assembly of sub-10 nm Particles: Role of Driving Forces and Template Geometry in Packing and Ordering

et al. 2015

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“…Various methods of surface patterning have been developed for the "bottom-up" fabrication of functional structures [10][11][12][13][14][15][16][17]. Precipitation via the evaporation of solutions containing the aforementioned building blocks near the contact line at a meniscus produces regular periodic-stripe patterns.…”

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confidence: 99%

Self-organized Archimedean spiral pattern: Regular bundling of fullerene through solvent evaporation

Chen¹,

Suzuki²,

Mahara³

et al. 2013

Applied Physics Letters

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We report the spontaneous generation of an Archimedean spiral pattern of fullerene via the evaporation of solvent. The self-organized spiral pattern exhibited equi-spacing on the order of m between neighboring stripes. The characteristics of the spirals, such as the spacing between stripes, the number of stripes and the band width of stripes, could be controlled by tuning the thickness of the liquid bridge and the concentration of solution. The mechanism of pattern formation is interpreted in terms of a specific traveling wave on the liquid-solid interface accompanied by a stick-slip process of the contact line.

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“…1. In fact, controlled dewetting has been utilized in many applications such as surface patterning [22][23][24], water repellency [25,26], and nano-materials assembly [27,28]. Fig.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of conductive metal lines by plate-to-roll pattern transfer utilizing edge dewetting and flexographic printing

Kwak

Shin

Yoon

et al. 2010

Journal of Colloid and Interface Science

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Dewetting self-assembly of nanoparticles into hexagonal array of nanorings

Cited by 47 publications

References 33 publications

Directed Self-Assembly of sub-10 nm Particles: Role of Driving Forces and Template Geometry in Packing and Ordering

Directed Self-Assembly of sub-10 nm Particles: Role of Driving Forces and Template Geometry in Packing and Ordering

Self-organized Archimedean spiral pattern: Regular bundling of fullerene through solvent evaporation

Fabrication of conductive metal lines by plate-to-roll pattern transfer utilizing edge dewetting and flexographic printing

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