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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

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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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Pigmentation01:19

Pigmentation

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The color of the skin is influenced by a number of pigments, including melanin, carotene, and hemoglobin. Recall that melanin is produced by cells called melanocytes, which are found scattered throughout the stratum basale of the epidermis. The melanin is transferred to the keratinocytes via melanosomes.
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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.
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Spindle Assembly02:50

Spindle Assembly

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Spindle assembly occurs through three, often coexisting, pathways – the centrosome-mediated pathway, the chromatin-mediated pathway, and the microtubule-mediated pathway – collectively contributing to form a robust spindle apparatus.
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Preparation of Functional Silica Using a Bioinspired Method
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Bioinspired Photonic Pigments from Colloidal Self-Assembly.

Eric S A Goerlitzer1, Robin N Klupp Taylor2, Nicolas Vogel2

  • 1Institute of Particle Technology and Advanced Materials and Processes Master Programme, Friedrich-Alexander University Erlangen-Nürnberg, 91058, Erlangen, Germany.

Advanced Materials (Deerfield Beach, Fla.)
|May 8, 2018
PubMed
Summary

Scientists are developing bioinspired photonic pigments using colloidal self-assembly. These methods mimic natural structural coloration for advanced camouflage, warning, and communication applications.

Keywords:
bioinspiredcolloidsphotonic pigmentsself-assemblystructural color

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Area of Science:

  • Materials Science
  • Optics
  • Biomimetics

Background:

  • Nature exhibits vibrant structural coloration for survival and communication.
  • These colors arise from intricate nano- and microscale structures, inspiring scientific research.
  • Understanding the physics of light interaction with these structures is key.

Purpose of the Study:

  • To explore methodologies for creating bioinspired photonic pigments.
  • To replicate natural coloration effects using colloidal self-assembly.
  • To investigate methods for dynamic color control in these pigments.

Main Methods:

  • Utilizing colloidal self-assembly of wavelength-scale particles.
  • Analyzing the physics of light-matter interactions in structured materials.
  • Modifying assembly processes to achieve specific optical properties.

Main Results:

  • Colloidal self-assembly effectively replicates natural structural coloration.
  • Optical properties can be tuned by controlling particle assembly and surface chemistry.
  • Integration of dynamic color control is achievable.

Conclusions:

  • Colloidal self-assembly offers a viable route to bioinspired photonic pigments.
  • Surface chemistry and absorbing elements are crucial for controlling coloration.
  • Future work can focus on advanced dynamic color-changing materials.