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Laser-induced Forward Transfer of Ag Nanopaste

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Published on: March 31, 2016

Laser adaptive processing technology for multilayer dissimilar materials.

Guiyang Yang, Hangrui Yan, Le Liu

|September 14, 2023

Summary

This summary is machine-generated.

A novel laser adaptive processing technology (LAPT) enables selective removal of dissimilar materials by analyzing their composition with laser-induced breakdown spectroscopy. This advanced system achieves real-time, high-speed feedback control for precise material processing.

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Last Updated: Jul 16, 2025

Laser-induced Forward Transfer of Ag Nanopaste

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Published on: March 31, 2016

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Published on: May 15, 2017

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Published on: March 20, 2015

Area of Science:

Materials Science
Laser Technology
Spectroscopy

Background:

Selective removal of dissimilar materials like Cu/Al multilayers presents significant challenges in manufacturing.
Traditional methods often lack the precision and speed required for complex multilayer structures.

Purpose of the Study:

To develop and demonstrate a laser adaptive processing technology (LAPT) for precise, selective removal of multilayer dissimilar materials.
To enable real-time analysis and adaptive control of laser processing parameters.

Main Methods:

Utilized laser-induced breakdown spectroscopy (LIBS) to analyze material properties and composition based on characteristic spectral data.
Implemented a high-speed photoelectric detection method using a bandpass filter and avalanche photodetector (APD) for rapid signal acquisition.
Integrated a field-programmable gate array (FPGA) for digital control, enabling kHz-level online feedback and closed-loop control.

Main Results:

Achieved in situ online detection of high-frequency pulse signals during laser scanning.
Realized kHz-level online feedback and closed-loop control for adaptive intelligent adjustment of laser processing parameters.
Demonstrated the selective removal of Cu/Al multilayer dissimilar materials with high precision.

Conclusions:

LAPT offers a feasible and flexible solution for processing arbitrary multilayer dissimilar materials.
The developed system provides real-time adaptive control, enhancing processing accuracy and efficiency.
This technology opens new possibilities for advanced manufacturing involving complex material interfaces.