LIBS spectrum enhancement method and system based on micro-nano structure

By preparing the surface of a specific micro-nano structure in LIBS technology, enhancing the interaction between laser and sample, the existing LIBS spectral signal enhancement methods are solved, and detection effects with higher sensitivity and lower detection limits are achieved.

CN119703387APending Publication Date: 2025-03-28SOUTHWEAT UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411940412.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-20
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing LIBS spectral signal enhancement method has problems such as unstable preparation process, unsatisfactory signal enhancement effect and high cost, which is difficult to widely promote in practical applications.

Method used

The laser beam is converged onto the sample through the optical lens group, the processing parameters of the laser are adjusted to prepare the surface of a specific micro-nano structure, the interaction area between the laser and the sample is increased, the laser breakdown threshold is reduced, and the intensity and signal-to-noise ratio of the LIBS spectral signal are improved.

Benefits of technology

It has achieved the improvement of the signal intensity, signal-to-noise ratio and stability of LIBS spectral, reduced the detection lower limit, improved the detection sensitivity and accuracy, and is suitable for chemical analysis and material characterization.

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Abstract

The invention discloses an LIBS spectrum enhancement method and system based on a micro-nano structure. The method comprises the following steps: S1, converging laser beams emitted by a laser onto a sample through an optical lens group; s2, adjusting processing parameters of the laser so as to form a preset processing light spot size on the surface of the sample; and S3, carrying out laser scanning processing on the sample, preparing a micro-nano structure on the surface of the sample, and forming a surface with a specific micro-nano structure so as to improve the LIBS spectral intensity. The invention provides an LIBS (Laser-induced Breakdown Spectroscopy) spectrum enhancement method and system based on a micro-nano structure, and the principle is that a surface with a specific micro-nano structure is prepared to enhance the spectrum signal intensity and the signal-to-noise ratio of laser-induced breakdown spectroscopy, so that the purposes of improving the detection stability and reducing the detection lower limit are achieved. The method has the significance of improving the sensitivity, accuracy and reliability of the LIBS technology, so that the method can be better applied to the fields of chemical analysis, material characterization and the like.
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