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September 10, 2025ACS OmegaOpen Access

Suppression of Coffee-Ring Effect in Droplets with Varying Particle Concentrations Induced by Laser

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Authors

PHPeiying HanLYLi YangZZZhaofei Zhu

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Overview

This study demonstrates laser irradiation alters deposition patterns by adjusting particle concentration, suggesting a novel approach for various applications.

Key Points

  • Laser irradiation effectively alters particle deposition patterns in droplets, reducing the coffee-ring effect.
  • Uniform deposition patterns form at particle concentrations below 0.02%, while gradient patterns occur above 0.08%.
  • A dimensionless parameter, G, quantifies these patterns; uniform structures arise when G max > 10, and gradient structures when G max < 2.
  • This method provides new insights for controlling microparticle deposition in applications like inkjet printing and drug formulation.

Cite This Study

Han et al. (2025) studied this question.

synapsesocial.com/papers/68c1b60d54b1d3bfb60eb1cbhttps://doi.org/10.1021/acsomega.5c02579
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