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Related Concept Videos

Micelles01:30

Micelles

Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...

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Updated: Jun 27, 2026

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

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Published on: February 11, 2020

Coronamicroparticle Arrays with Stable Superamphiphobicity.

Qundong Xia1,2, Chao Xu1, Zaiping Xu1

  • 1School of Materials Science and Engineering, Zhejiang University, Hangzhou, China.

Small Methods
|June 26, 2026
PubMed
Summary
This summary is machine-generated.

Scientists created novel "coronamicroparticles" with reentrant nanostructures on curved surfaces. This method significantly enhances liquid-repelling performance for superamphiphobic applications.

Keywords:
coronamicroparticle arrayscurved surfacespolystyrene sphere arrayreentrant nanostructuressuperamphiphobic property

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Area of Science:

  • Materials Science
  • Surface Chemistry
  • Nanotechnology

Background:

  • Springtails naturally utilize reentrant nanostructures for superamphobicity.
  • Fabricating dense reentrant nanostructures on curved surfaces is challenging.
  • Increasing packing density of nanostructures improves liquid-repelling performance.

Purpose of the Study:

  • To develop a method for fabricating reentrant nanostructure arrays on curved surfaces.
  • To create novel coronamicroparticles with enhanced superamphobicity.
  • To explore potential applications of these structures.

Main Methods:

  • Transferring a silver nanomesh onto polystyrene (PS) microspheres to create a conformal coating.
  • Using thermal evaporation of gold through the silver nanomesh to form gold nanodisk arrays.
  • Employing reactive ion etching on gold nanodisk-protected PS microspheres to generate reentrant nanostructures.

Main Results:

  • Successfully fabricated coronamicroparticle arrays on PS microspheres, resembling the corona virus.
  • Demonstrated that coronamicroparticle morphology can be tuned by PS sphere size and etching time.
  • Achieved stable superamphiphobicity in the fabricated coronamicroparticle arrays.

Conclusions:

  • The developed method enables efficient fabrication of reentrant nanostructures on curved surfaces.
  • Coronamicroparticles exhibit excellent superamphobicity due to increased nanostructure packing density.
  • These findings suggest promising applications in self-cleaning, liquid transport, and sensing.