Related Experiment Video
Updated: Sep 9, 2025
11:20
Fabrication of Superhydrophobic Metal Surfaces for Anti-Icing Applications
Published on: August 15, 2018
8.7K
Directional Navigation of Low-Temperature Leidenfrost Droplets on Femtosecond Laser-Textured Superwettable Pattern
Kai Yin1,2, Yuchun He1, Yao Liu1
1Hunan Key Laboratory of Nanophotonics and Devices, School of Physics, Central South University, Changsha 410083, China.
ACS Applied Materials & Interfaces
|September 3, 2025
Summary
Researchers developed a new superwettable surface for low-temperature Leidenfrost droplet manipulation. This method enables precise control of droplet movement, reducing energy demands for microscale applications.
Area of Science:
- Surface science and microfluidics
- Nanotechnology and materials science
Background:
- The Leidenfrost effect allows near-frictionless droplet movement on a vapor layer, crucial for microscale applications.
- Conventional methods require high temperatures, increasing energy use and material stress.
Purpose of the Study:
- To develop a low-temperature method for controlled Leidenfrost droplet navigation.
- To fabricate a textured superwettable patterned surface for droplet manipulation.
Main Methods:
- Fabrication of a textured superwettable surface using femtosecond laser-induced deposition and direct writing.
- Experimental and simulation-based analysis of low-temperature Leidenfrost droplet dynamics.
Main Results:
- Achieved directional droplet navigation at 155 °C, significantly lower than traditional methods.
- Demonstrated precise control over droplet braking, uphill movement, and curved trajectories.
- Surface features nanoparticle clusters and micro/nanoscale stripes.
Conclusions:
- The proposed facile fabrication strategy enables robust, low-temperature control of Leidenfrost droplets.
- This advancement offers a more energy-efficient approach for microscale chemical reactions and material transport.
