Rapid and high-resolution visualization elements analysis of material surface based on laser-induced breakdown spectroscopy and hyperspectral imaging

Determination of ash content, volatile matter, and calorific value in coal by OLS combined with laser-induced breakdown spectroscopy based on PC recombination

“…19 Therefore, developing a real-time and efficient analysis technology that can detect various coal quality parameters has substantial market demand and applicability in the coal industry. Laser-induced breakdown spectroscopy (LIBS) is a promising atomic emission spectroscopy analysis technique that employs spectral analysis technology and is commonly utilized in environmental, 20,21 food, 22,23 medicine, 24,25 metallurgy, 26,27 and mineral analysis, 28–30 and other fields. LIBS focuses a high-energy pulsed laser on the sample surface to excite plasma and employs spectrometers to collect spectral information on atoms, ions, and molecules to realize the synchronous, rapid analysis of multiple components in the sample.…”

Determination of Elemental Composition and Content in Stream Sediments by Laser-Induced Breakdown Spectroscopy

“…LIBS is an atomic spectroscopy comprising "unique fingerprints" generated by different elements, which can almost achieve almost all periodic table elements. The most valuable feature of LIBS is its strong signal and high detection efficiency, which can meet the detection needs of various functions such as remote in situ and short-range microscopy [8][9][10][11].…”

Fast fingerprint scanning and chemical composition identification of a large-scale material surface by a combined HSI-LIBS operation

“…Also, the HSI 2D scanner allows for fast scanning and high spatial resolution but cannot accurately identify the chemical composition. 9 Because of the difficulty of relying solely on one spectroscopy technique for detection and characterization to achieve fast surface scanning, high spatial resolution, and chemical composition identification simultaneously, the combination of a 2D/3D optical scanner and point accurate measurement technology may provide a new approach for future research.…”

“…These findings reveal the consistency and relevance of HSI and LIBS testing, and also complement and validate our previous work. 9…”

“…The HSI-LIBS test has three outstanding advantages compared with the point-to-point mapping method: (1) it has no limit on the sample surface area size and has high spatial resolution; in comparison, the point-to-point mapping method has strict requirements on sample size and lower spatial resolution; 12 (2) its scanning speed is fast (tens of seconds), while the point-to-point mapping method usually requires time ranging from a few minutes to several hours; 10,13,14 (3) it provides mass information, including test size, orientation and location, optical reflection spectra and intensity, chemical composition and content. 9 15,16 Hence, the combined HSI-LIBS method overcomes the limitations of single spectroscopic technology and provides a new idea and means of material surface visualization analysis.…”