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Related Experiment Video

Updated: Jun 13, 2026

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment
08:48

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Published on: November 9, 2015

Laser turns silicon superwicking.

A Y Vorobyev1, Chunlei Guo

  • 1The Institute of Optics, University of Rochester, Rochester, New York 14627, USA.

Optics Express
|April 15, 2010
PubMed
Summary
This summary is machine-generated.

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Researchers developed a novel superwicking silicon surface using femtosecond laser pulses. This surface enables water to move vertically uphill against gravity, driven by a supercapillary effect.

Area of Science:

  • Materials Science
  • Surface Engineering
  • Fluid Dynamics

Background:

  • Traditional silicon surfaces exhibit limited liquid interaction.
  • Controlling fluid motion on surfaces is crucial for various applications.

Purpose of the Study:

  • To engineer a novel superwicking silicon surface.
  • To investigate the mechanism of gravity-defying water motion on this surface.

Main Methods:

  • Utilizing high-intensity femtosecond laser pulses to create unique surface patterns on silicon.
  • Observing and analyzing the motion of water on the engineered surface.

Main Results:

  • Transformed regular silicon into a superwicking material.
  • Observed water moving vertically uphill against gravity.

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Last Updated: Jun 13, 2026

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment
08:48

Selective Area Modification of Silicon Surface Wettability by Pulsed UV Laser Irradiation in Liquid Environment

Published on: November 9, 2015

Micro-masonry for 3D Additive Micromanufacturing
08:45

Micro-masonry for 3D Additive Micromanufacturing

Published on: August 1, 2014

Laser-induced Forward Transfer of Ag Nanopaste
08:07

Laser-induced Forward Transfer of Ag Nanopaste

Published on: March 31, 2016

  • Identified a supercapillary effect as the driving force for water propulsion.
  • Confirmed that wicking dynamics follow a square root of time dependence.

    • Conclusions:

    • Femtosecond laser-induced surface structuring can create superwicking materials.
    • Supercapillary effects are responsible for the observed gravity-defying liquid motion.
    • The engineered silicon surface demonstrates unique fluid transport properties.