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Author Spotlight: Quantitative Characterization of Liquid Photosensitive Bioink Properties for Continuous Digital Light Processing Based Printing

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Laser Induced Coffee-Ring Structure through Solid-Liquid Transition for Color Printing.

Jiawang Xie¹, Ming Qiao¹, Dezhi Zhu¹

¹State Key Laboratory of Tribology in Advanced Equipment, Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.

Small (Weinheim an Der Bergstrasse, Germany)

|November 20, 2022

Summary

This summary is machine-generated.

This study introduces a novel laser-induced method to precisely control metallic micro/nano structure fabrication. The technique enables the creation of unique coffee-ring structures with tunable colors for high-resolution printing applications.

Keywords:

coffee-ring structures color printing solid-liquid transition ultrafast lasers

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Last Updated: Aug 20, 2025

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Area of Science:

Materials Science
Nanotechnology
Laser Physics

Background:

Metallic micro/nano structures are crucial for micromachines and microdevices.
Controllable fabrication of these structures using ultrafast laser processing remains a challenge.

Purpose of the Study:

To propose a novel strategy for fabricating unique metallic micro/nano structures.
To achieve controllable fabrication of coffee-ring structures using laser-induced transient solid-liquid transition.

Main Methods:

Modulating metal's transient solid-liquid phase with initial pulse excitation.
Utilizing subsequent ultrafast pulse-induced recoil pressure to suppress plasma emission.
Employing two-temperature and molecular dynamics models to analyze solid-liquid transition dynamics.

Main Results:

Successfully fabricated controllable coffee-ring structures.
Demonstrated tunable structure color based on optical response.
Revealed solid-liquid transition dynamics through simulation.

Conclusions:

The proposed laser-induced transient solid-liquid transition is a promising strategy for fabricating functional micro/nano structures.
The developed method allows for large-scale, high-resolution color printing.
This approach significantly broadens potential applications for metallic micro/nano structures.