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January 14, 2026Light Science & ApplicationsOpen Access

Gradient-graphene-enabled directional photothermal regulation for self-aligned laser transfer printing

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Authors

MGMengxin GaiJBJing BianFCFurong Chen

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Overview

Laser-assisted transfer printing enhances heat distribution and accuracy in microchip release, indicating potential for precise assembly.

Key Points

  • This research aims to develop a self-aligned laser transfer method for improved microchip assembly accuracy.
  • Developed SALT using thermal conductivity gradient carbon with a graphene layer and amorphous carbon layer.
  • Employed excimer laser for self-limited carbonization of polyimide.
  • Modulated excimer laser parameters to fabricate grayscale-controlled TCGC.
  • Achieved transfer accuracy of less than 5 micrometers and size compatibility under 100 micrometers.
  • Demonstrated synchronous chip release at all adhesive sites, reducing transfer deviations.
  • Highlighted self-aligned capabilities in RGB micro-LED display applications.

Cite This Study

Gai et al. (2026) studied this question.

synapsesocial.com/papers/6966f30613bf7a6f02c00916https://doi.org/10.1038/s41377-025-02170-9
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