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Related Concept Videos

Colloids03:22

Colloids

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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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Colloids and Suspensions01:17

Colloids and Suspensions

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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
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Colloidal precipitates01:09

Colloidal precipitates

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The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Levels of Organization01:09

Levels of Organization

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Biological organization is the classification of biological structures, ranging from atoms at the bottom of the hierarchy to the Earth's biosphere. Each level of the hierarchy represents an increase in complexity that builds upon the previous level.
Molecules Are Composed of Atoms, and Biomolecules Are Assembled from Molecules:
The most basic levels include atoms, molecules, and biomolecules. Atoms, the smallest unit of ordinary matter, are composed of a nucleus and electrons. Molecules...
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Protein Complex Assembly02:41

Protein Complex Assembly

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Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types.  Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
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Protein Organization01:13

Protein Organization

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Overview
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Related Experiment Video

Updated: Feb 8, 2026

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

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Interaction-tailored organization of large-area colloidal assemblies.

Silvia Rizzato1,2, Elisabetta Primiceri1,2, Anna Grazia Monteduro1,2,3

  • 1Department of Mathematics and Physics "Ennio De Giorgi", Università del Salento, Via per Arnesano, Lecce, Italy.

Beilstein Journal of Nanotechnology
|July 7, 2018
PubMed
Summary
This summary is machine-generated.

Colloidal lithography uses nanoscale crystals to create patterns. Researchers controlled particle interactions to precisely engineer nanoholes and nanodisks for large-area nanoscale patterning.

Keywords:
colloidal lithographyelectrostatic interactionslarge-area nanostructure patterninglocalized surface plasmon resonancespherical nanoparticles

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Surface Science

Background:

  • Colloidal lithography offers a low-cost method for nanoscale patterning using spherical crystals as masks.
  • Nanostructure features depend on particle size, deposition conditions, and interactions.

Purpose of the Study:

  • To investigate polystyrene sphere adsorption onto substrates.
  • To understand the influence of particle-substrate and particle-particle interactions on organization.
  • To develop strategies for controlling nanostructure formation.

Main Methods:

  • Studied polystyrene sphere adsorption onto substrates.
  • Manipulated salt concentration and absorption time in particle solutions.
  • Investigated particle-substrate and particle-particle interactions.

Main Results:

  • Two strategies were developed to control particle number and interparticle distance.
  • Achieved large-area (cm²) patterning of nanoholes and nanodisks.
  • Demonstrated control over nanostructure size and material.

Conclusions:

  • Particle interactions significantly influence colloidal film formation and nanostructure organization.
  • Adjusting salt concentration and absorption time are effective methods for precise nanoscale patterning.
  • This technique enables scalable fabrication of diverse nanostructures.