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Related Concept Videos

Network Covalent Solids02:18

Network Covalent Solids

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Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
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Related Experiment Video

Updated: Mar 24, 2026

Using Graphene Liquid Cell Transmission Electron Microscopy to Study in Situ Nanocrystal Etching
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Graphene Oxide Liquid Crystals: Discovery, Evolution and Applications.

Rekha Narayan1, Ji Eun Kim1, Ju Young Kim1

  • 1National Creative Research Initiative Center for Multi-Dimensional Directed Nanoscale Assembly, Department of Materials Science & Engineering, KAIST, Daejeon, 34141, Republic of Korea.

Advanced Materials (Deerfield Beach, Fla.)
|March 2, 2016
PubMed
Summary

Graphene oxide liquid crystals (GOLCs), a new 2D nanomaterial, exhibit liquid crystallinity due to their shape. GOLCs offer a versatile platform for advanced applications in materials science and energy storage.

Keywords:
colloidsgraphenegraphene oxideliquid crystalsnematic

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Colloidal Science

Background:

  • Introduction to liquid crystals (LCs) and their theoretical background.
  • Overview of reported LC phases including nematic, lamellar, and chiral phases.
  • Graphene oxide liquid crystals (GOLCs) are a novel class of 2D nanomaterials.

Purpose of the Study:

  • Highlight the discovery and research progress of GOLCs.
  • Discuss the factors influencing GOLC stability, such as pH and ionic strength.
  • Provide an overview of GOLC applications.

Main Methods:

  • Review of existing literature on GOLCs.
  • Analysis of GOLC properties, including shape anisotropy and molecular alignment.
  • Exploration of parameters affecting GOLC behavior in aqueous dispersions.

Main Results:

  • GOLCs exhibit colloidal liquid crystallinity due to disc-like shape anisotropy.
  • GOLCs provide a versatile platform for controlling molecular alignment.
  • Key parameters like pH and ionic strength influence GOLC stability.

Conclusions:

  • GOLCs demonstrate significant potential in diverse applications.
  • Applications include oriented fibers, nanocomposites, and energy storage devices.
  • GOLCs bridge the fields of carbon nanomaterials and liquid crystals.