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Related Concept Videos

Metallic Solids02:37

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
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Liquid–Solid Solutions

The process of a solid dissolving in a liquid to form a solution is governed by the solubility limit, which is the maximum amount of the solid substance, or solute, that can be dissolved in a specific volume of the liquid or solvent. As the solute dissolves, it reaches a point where no more solute can be dissolved at a given temperature - this is known as the saturation point. However, if further solute is added and it manages to dissolve, the solution becomes supersaturated. Supersaturated...
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Solid–Solid Solutions

The temperature-composition phase diagram of two solids, A and B, which are immiscible in the solid phase but form miscible liquids, shows that when the temperature is low, these two exist as separate, pure solids (A and B). As the temperature increases, they transition into a single-phase liquid solution where A and B coexist. Moving from point a1 to a2 in the phase diagram, the composition changes such that solid B begins to separate from the solution, enriching the remaining liquid with A.
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Related Experiment Video

Updated: Jun 9, 2026

Gold Nanostar Synthesis with a Silver Seed Mediated Growth Method
12:39

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Published on: January 15, 2012

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Modeling Au Nanostar Geometry in Bulk Solutions.

William Morton1, Caoimhe Joyce1, Jonny Taylor1

  • 1Department of Materials, Imperial College London, LondonSW7 2AZ, U.K.

The Journal of Physical Chemistry. C, Nanomaterials and Interfaces
|February 1, 2023
PubMed
Summary
This summary is machine-generated.

Researchers can now describe gold nanostars by their geometry, not just LSPR. This simplifies simulations and predicts properties like drug capacity and cell interactions for better biological applications.

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Area of Science:

  • Nanotechnology
  • Materials Science
  • Biophysics

Background:

  • Gold nanostars are currently characterized by their localized surface plasmon resonance (LSPR).
  • This method lacks detailed geometric information crucial for precise applications.
  • Characterizing nanostar geometry is often complex and time-consuming.

Purpose of the Study:

  • To establish a method for characterizing gold nanostars based on geometric properties.
  • To simplify discrete dipole approximation (DDA) simulations for nanostars.
  • To enable prediction of nanostar properties for biological applications.

Main Methods:

  • Developing an average tip approximation for nanostar modeling.
  • Matching projected area and LSPR of modeled nanostars to synthesized ones.
  • Using geometric data to approximate volume, surface area, and tip number.

Main Results:

  • A method to describe gold nanostars using geometric properties, analogous to nanosphere radius.
  • Reduced complexity in DDA simulations for nanostars.
  • Accurate approximation of nanostar volume, surface area, and tip number without extensive characterization.

Conclusions:

  • Geometric characterization of gold nanostars offers a more comprehensive understanding than LSPR alone.
  • This approach enhances the predictability of nanostar behavior in biological systems.
  • The findings increase the usability and drive the biological application of gold nanostars.