Atomic emission dual-spectrum thermometry for laser-induced Cu plasma temperature

High precision and fast classification of different dimensions of Baijiu using an OptGSCV quadratic optimization network combined with AS-LIBS

“…Laser induced breakdown spectroscopy (LIBS) 20,21 is a plasma atomic emission spectroscopy technique based on high power pulses, which utilizes an intense pulsed laser focused on the surface of the target sample to generate a plasma, realizing the quantitative and qualitative analysis of the sample composition. As an emerging means of chemical analysis, LIBS not only has the advantages of rapid, multi-element detection, but it also allows non-contact in situ detection, 22 which opens up new possibilities for real-time on-line detection, and it has been widely used in many elds, such as food safety, 23,24 substance detection, 25 geological exploration, 26 and Mars exploration.…”

Laser-induced breakdown spectroscopy combined with KNN for tracing study of soils from different regions

“…Tracing research determines the pollution source path and mode by analyzing environmental characteristics, physicochemical properties of the pollutant source, and soil element distribution laws, using scientific and accurate technical means to trace pollutants. Traditional soil analysis methods are often limited in providing accurate tracing research without damaging the sample [5] . Therefore, researchers urgently need to find more effective technical means to solve this problem.…”

Bifunctional metasurface with ultra-broadband electromagnetically induced transparency and perfect transmissive polarization conversion

“…Polarization is becoming an attractive characteristic of electromagnetic waves [28], which has a wide scope of applications in imaging, spectroscopy, and communication [29][30][31]. At present, metasurfaces based on PC function can control the polarization of reflected and transmitted electromagnetic waves to achieve linear to circular PC [32,33], linear to linear PC [34][35][36][37], and circular to linear PC [38,39].…”