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Biljana held a lecture at ChemInno 2026 – When Science Meets Industry conference
Biljana held an invited lecture at the First International Conference on Medical, Pharmaceutical and Cosmetic Chemistry, Household and Industrial Chemistry, Forensic and Analytical Chemistry (ChemInno 2026 – When Science Meets Industry) held on 5th May 2026 in Belgrade. There she presented the work done during her recent stay at ENEA Frascati entitled “Acoustic Signatures in LIBS-Based Detection of Explosive Traces”.
Milica participated at the Italy – Argentina round table
The Italy – Argentina round table under the working title Advances in Laser Induced Breakdown Spectroscopy (LIBS) applications was held on 17.10.2025. at the University of Bari, Department of Chemistry. Milica held a lecture titled “LIBS for the determination of trace metals in oils”.
Milica participated at the 13th International Conference on Photo-Excited Processes and Applications (ICPEPA-13)
13th International Conference on Photo-Excited Processes and Application was held at the Castle of Charles V in Lecce, Italy, from September 14 to 19, 2025. Milica participated with a poster entitled LIBS Analysis of Oils: A Spin-Coating Approach for High Sensitivity and Matrix Effect Suppression, while the abstract of the poster is given below:
We present a methodology for the preparation and elemental analysis of oil samples using Laser-Induced Breakdown Spectroscopy (LIBS), designed to reduce matrix effects and sample
volume while improving sensitivity and repeatability. The sample preparation involves stabilizing both the oil and a silica wafer substrate at a fixed temperature of 40 °C, followed by deposition of an oil droplet on substrate rotated by a spin coater, thus producing uniform thin films with tunable thickness governed by rotation speed [1].
This approach enables consistent sampling, independent of the oil’s kinematic viscosity, and ensures a reproducible interaction volume for LIBS. Comparative measurements on pure oil and oil samples containing various elements revealed that matrix effect is significantly mitigated in thin oil films. For ultra-thin layers (~0.74 μm), the LIBS signal—particularly the carbon line—becomes stable and insensitive to impurity concentration, a key indicator of minimized matrix interference. Furthermore, pulse-to-pulse stability and electron density were significantly enhanced compared to bulk liquid targets, due to better plasma confinement [2]. Despite the minimal ablation volume (~0.3 nL per pulse), strong plasma emission was achieved. Using optimized delay times and line-specific calibration, we attained detection limits as low as 3.9 ppm for Zn, 0.49 ppm for Cd, 0.16 ppm for Cu, and 0.082 ppm for Cr. This method provides a highly sensitive and efficient pathway for trace elemental analysis in oil-based matrices [1].
References:
[1] M. Vinić, E. Aruffo, F. Andreoli, M. Ivković, V. Lazic, Spectrochimica Acta Part B: Atomic
Spectroscopy, 164, 105765 (2020)
[2] M. Vinić, M. Kuzmanović, J. Savović, M. Ivković, Journal of the Serbian Chemical Society 88 (2),
153 (2022)
Milica participated at the PHOTONICA 2025 conference
Milica give a lecture at PHOTONICA 2025 conference held at Serbian Academy of Science and Arts in Belgrade from 25th August to 29th August 2025. The title of the talk was Enhancement of LIBS Signal via NELIBS and LIPSS for Biomedical Applications while the abstract of the talk is given below:
Laser-Induced Breakdown Spectroscopy (LIBS) has emerged as a promising technique for elemental analysis in complex matrices, including biological fluids. However, its sensitivity – especially for trace elements – remains a critical limitation when targeting subtle biochemical differences such as those potentially associated with neurodevelopmental disorders like Autism Spectrum Disorder (ASD) [1]. In this context, signal enhancement strategies are essential to increase LIBS performance
and unlock its potential in clinical diagnostics. In this work, we present our preliminary results on two distinct signal enhancement approaches: Nanoparticle-Enhanced LIBS (NELIBS) and the application of Laser-Induced Periodic Surface Structures (LIPSS). Both methods aim to improve signal intensity and reproducibility in LIBS measurements by altering the physical properties of the substrate or sample–substrate interface. Our experimental setup involves the analysis of aqueous PbCl₂ solutions and blood serum
microdroplets deposited and dried on solid substrates. For NELIBS, substrates were functionalized with noble metal nanoparticles, known to facilitate localized plasma confinement and improved ablation efficiency. In parallel, LIPSS were fabricated on the same substrates using controlled laser irradiation, creating periodic nanostructures that enhance light–matter interaction during plasma generation. The enhanced LIBS spectra were compared with conventional LIBS for both PbCl₂ and serum
samples, focusing on signal-to-noise ratio, emission intensity, and spectral reproducibility. Our findings confirm that both NELIBS and LIPSS contribute to notable signal enhancement. The observed enhancements suggest increased sensitivity for trace element detection in complex biological fluids. These results represent a first step toward applying advanced LIBS-based techniques for biomedical diagnostics. The long-term objective of our research is to develop a robust metallomic profiling method capable of detecting elemental biomarkers potentially associated with ASD. Future work will focus on applying these optimized LIBS protocols to real blood serum samples from pediatric subjects with ASD and neurotypical controls. This study highlights the promise of physical and chemical substrate modifications for pushing the analytical limits of LIBS and opens new perspectives for its application in non-invasive and rapid diagnostic workflows.
[1] J.K. Kern et al, Journal of Trace Elements in Medicine and Biology 38 (2016) 8.
Nikola and Ivan participated at BPU 12 conference
12th International Congress of the Balkan Physical Union (BPU 12) was held at National University of Science and Technology POLITEHNICA in Bucharest, Romania from 8th to 12th July 2025. Nikola and Ivan participated with a poster entitled Detection of Hydrogen Isotopes In Fusion-Relevant Targets with Laser Ablation and Microwave-Induced Plasma which is the joint work with colleagues from Low Temperature Plasma Laboratory at National Institute for Laser Plasma and Radiation Physics (INFLPR), Romania and Vinca Institute of Nuclear Sciences. Here Nikola presented part of his results obtained in pursue of his PhD thesis. Also, Nikola achieved the award for one of best 20 posters presented at the conference. The abstract of the poster is:
The analysis of plasma facing components (PFCs) of fusion machines using LIBS technique is widely distributed in fusion community. Difficulties arise when the spectroscopic measurements of tritium retention are performed, especially the problem of resolving deuterium (Dα) and tritium (Tα) Balmer alpha lines become a major issue. Therefore, this study exploits the usage of microwave induced plasma (MIP) as a potential solution for the aforementioned problem. The material of the target is introduced into MIP with laser ablation using Nd:YAG laser, and spectral signal is monitored with high resolution spectrometer and ICCD camera. Two silicon-based targets were utilized for these studies. The first target, coated with carbon (C) and methane (CH4), was used for optimization of the measurement system, whereas the second target, coated with C and deuterium (D), was used for final measurements. As a part of the optimization process, ablation rate and crater profiles were studied with an optical profilometer. The final measurement results indicate that, with the current setup, the lowest detectable tritium level would correspond to a Tα line intensity between 30% and 50% of the Dα line intensity. This setup shows a promising tool for this type of analysis, providing reliable and fast determination of tritium content that has been retained in the material.
Milica gave an invited lecture at ICSQE2024 conference
The International Conference and School on Quantum Electronics: “Laser Physics and Applications” (ICSQE 2024) was held from 23rd – 27th March in Ravda, Bulgaria. Milica was invited to give an invited lecture on her work on diagnostics of Laser Induced Plasma from thin oil film. The talk was entitled Laser-induced Breakdown Spectroscopy for direct determination of heavy metals in oils.
SPIG 2024
Ivke, Biljana, Neša, Milica, Ivan and Nikola participated in 32nd Symposium of Physics of Ionized Gases (SPIG 2024), held in Belgrade at the Serbian Academy of Sciences and Art. Ivke was member of the Scientific Committee for the sixth consecutive time. Ivan was in the Ogranizing Committee, while Bilja served as the co – secretary of the conference.
During the final day of the conference, Ivan gave a progress report lecture entitled “Application of Machine Learning and Artificial Intelligence in Plasma Spectroscopy“.
At the poster presentation part of the conference, Biljana presented the poster entitled “Fast Photography in the Service of Spatially and Temporally Resolved LIBS Diagnostics of Doped Tungsten”, while Ivan presented the posters entitled “Detection of Rhenium in Tungsten Using LIBS with Additional Fast Pulse Discharge” and “Influence of the Ablation Angle Change on Spectral Line Intensities in LIBS Experiments“. Apart from this, we also presented, or participated in the following posters:
Target Selection for LIBS Studies of Hydrogen Isotope Retention – Dragan Ranković, Biljana Stankov, Ivan Traparić, Miroslav Kuzmanović and Milivoje Ivković
During the conference, we also had a pleasure of hosting our friend and collaborator Dr. Chihiro Suzuki – san from NIFS Japan, who gave a talk entitled “Comprehensive Z-dependence Analysis of Soft X-ray Spectra from Highly Charged Heavy Ions Using Magnetically Confined High-temperature Plasmas“.
Ivan participated in the ICSLS 2024 conference
The ICSLS 2024 conference was held in Japan from 2nd to 7th June at Prefectural Budokan in Otsu. Ivan took part at this conference, where he had two posters. One poster was about the joint work with LHD colleagues on the application of generative artificial intelligence in modeling of emitted tungsten UTA structure in EUV spectral range. The second poster was the presentation of NOVA2LIBS4fusion project results regarding the study of separation of hydrogen and deuterium spectral lines relevant for tritium retention studies.
Finally, he also had the honor of visiting the NIFS facility in Toki. Here, he held a seminar about the results disseminated at the conference, and also took a tour of LHD device that is in operation at NIFS.
Milica gave a lecture on 17th Photonics Workshop
17th Photonics Workshop was held from 10th – 14th March at the Ski Resort Kopaonik. Milica was invited to give a lecture on her work on diagnostics of Laser Induced Plasma from thin oil film. The talk was entitled Diagnostics of laser-induced plasma from a thin oil film.
Milica presented the results from her PhD thesis on IX International School and Conference on Photonics
IX International School and Conference on Photonics was held in Belgrade from 28th August to 1st September. Milica was invited to give a progress report on her work on application of LIBS in determination of trace metals in oils. The talk was entitled Application of laser-induced breakdown spectroscopy for the determination of trace metals in oils.
