Two Component Particle Arrays on Patterned Polyelectrolyte Multilayer Templates

Zheng, Hao; Lee, Ilsoon; Rubner, Michael F.; Hammond, Paula T.

doi:10.1002/1521-4095(20020418)14:8<569::aid-adma569>3.0.co;2-o

Cited by 211 publications

(153 citation statements)

References 26 publications

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“…Again, it is essential that H(x) is given by (20), so the integral in (23) must be proportional to a sum of exponentials, which is only possible if ρ 0 (x) is a constant: ρ 0 (x) = ρ 0 . Equation (31) transforms to…”

Section: Jammed Statesmentioning

confidence: 99%

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Formation of clumps and patches in self-aggregation of finite-size particles

Holm

Putkaradze

2006

Physica D: Nonlinear Phenomena

141

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New model equations are derived for dynamics of self-aggregation of finite-size particles. Differences from standard Debye-Hückel [1] and Keller-Segel [2] models are: a) the mobility µ of particles depends on the locally-averaged particle density and b) linear diffusion acts on that locally-averaged particle density. The cases both with and without diffusion are considered here. Surprisingly, these simple modifications of standard models allow progress in the analytical description of evolution as well as the complete analysis of stationary states. When 1 µ remains positive, the evolution of collapsed states in our model reduces exactly to finite-dimensional dynamics of interacting particle clumps. Simulations show these collapsed (clumped) states emerging from smooth initial conditions, even in one spatial dimension. If µ vanishes for some averaged density, the evolution leads to spontaneous formation of jammed patches (weak solution with density having compact support). Simulations confirm that a combination of these patches forms the final state for the system.

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Section: Jammed Statesmentioning

confidence: 99%

“…This problem is motivated by recent experiments using self-assembly of nano-particles in the construction of nano-scale devices [12]- [20]. A colloidal solution of 50nm-size particles is deposited on a grooved substrate; evaporation and receding contact line drags the particles into the channels.…”

mentioning

confidence: 99%

Formation of clumps and patches in self-aggregation of finite-size particles

Holm

Putkaradze

2006

Physica D: Nonlinear Phenomena

141

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“…그 작은 크기로 인해 특정 매트릭 스 내에 분산이 용이하여 전도성 접속 소재나 패키징, 전자 파 차폐 코팅, ESD(electrostatic discharge)코팅 등에 사용되 고 있다. [1][2][3][4] 반도체, LCD 및 모바일 기기산업의 급속한 성장 전망으로 인해 접속 소재의 수요 및 중요도는 증대될 것으로 예상되고 있다. 특히 휴대형 전자기기 시장이 날이 갈수록 커지고 있 어, 핵심 접속 재료인 이방성 도전필름(anisotropic conductive film)으로서 전도성 입자가 매트릭스에 분산되어있는 복합재 료(conductive particle-embedded composite material)가 주목 받고 있다.…”

Section: 서 론unclassified

Adhesion Behavior of Graphene Oxide on Spherical Polymer Particles

김신우

이상수²,

이종휘

2013

Polymer Korea

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Graphene-coated polymer particles have attracted research interests due to their emerging applications derived from their controlled structure and morphology. To control the properties of graphene oxide (GO)-polystyrene (PS) composite particles, the adsorption time and instantaneous adsorption conditions were investigated by varying their mixing method. Polystyrene particles prepared by emulsion polymerization were modified to have positive surface charge by adsorption of polyethylene imine (PEI) on the surface of PS particles. GO prepared by the chemical exfoliation method had negative surface charge from the oxygenated groups. The adsorption of the negatively charged GOs onto the positively charged PS particles was successfully completed, and it was found that a longer adsorption time and a greater difference in the instantaneous relative concentration led PS-GO particles to have more homogeneously coated surfaces without aggregation.

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“…The surface charge density was modulated by pH, ionic strength and effective surface charge of the polyelectrolyte. 82 However, only a moderate packing density was achieved due to the repulsive forces between the particles. In addition, a balance between the interactions involved during the nanoparticle assembly is needed to obtain an optimum adsorption strength and deposition selectivity.…”

Section: Patterning By Soft Lithographymentioning

confidence: 99%

From supramolecular chemistry to nanotechnology: Assembly of 3D nanostructures

Ling

Reinhoudt

Huskens

2009

Pure and Applied Chemistry

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Fabricating well-defined and stable nanoparticle crystals in a controlled fashion receives growing attention in nanotechnology. The order and packing symmetry within a nanoparticle crystal is of utmost importance for the development of materials with unique optical and electronic properties. To generate stable and ordered 3D nanoparticle structures, nanotechnology is combined with supramolecular chemistry to control the self-assembly of 2D and 3D receptor-functionalized nanoparticles. This review focuses on the use of molecular recognition chemistry to establish stable, ordered, and functional nanoparticle structures. The host–guest complexation of β-cyclodextrin (CD) and its guest molecules (e.g., adamantane and ferrocene) are applied to assist the nanoparticle assembly. Direct adsorption of supramolecular guest- and host-functionalized nanoparticles onto (patterned) CD self-assembled monolayers (SAMs) occurs via multivalent host–guest interactions and layer-by-layer (LbL) assembly. The reversibility and fine-tuning of the nanoparticle-surface binding strength in this supramolecular assembly scheme are the control parameters in the process. Furthermore, the supramolecular nanoparticle assembly has been integrated with top-down nanofabrication schemes to generate stable and ordered 3D nanoparticle structures, with controlled geometries and sizes, on surfaces, other interfaces, and as free-standing structures.

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Two Component Particle Arrays on Patterned Polyelectrolyte Multilayer Templates

Cited by 211 publications

References 26 publications

Formation of clumps and patches in self-aggregation of finite-size particles

Formation of clumps and patches in self-aggregation of finite-size particles

Adhesion Behavior of Graphene Oxide on Spherical Polymer Particles

From supramolecular chemistry to nanotechnology: Assembly of 3D nanostructures

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