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Laboratory for Radiation Chemistry and Physics “Gamma” is committed to fundamental and applicative research in the field of Materials Chemistry and Physics. Our research can generally be stated to involve materials synthesis and characterization, and it is supported by a creative and dedicated staff along with a modern collection of materials characterization equipment.
Nanoparticles and nanocomposites are currently in our research focus, with aim to improve synthesis procedures and materials properties, and to apply them in new technologies. Exceptional collection of radiation sources (from high energy Gamma rays, lasers, to low energy microwaves) are utilized in both materials modifications and synthesis, as well as for materials characterization. Optical spectroscopy (UV-VIS, fluorescence, infrared and raman) is one of key specialties of the Laboratory, and it is exploited on state-of-the-art instrumentation.
Our researchers are heavily involved in cooperative projects together with research groups within the Europe and worldwide. Several projects under European Framework Program (FP7), International Atomic Energy Agency (IAEA), NATO and bilateral state programs (France, Slovenia, Slovakia) are currently underway in the Laboratory. Institute of Nuclear Sciences “Vinca” is a member of University of Belgrade and our researchers are engaged in teaching at graduate levels.
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Lab 030 researchers Tatjana Savić, Una Bogdanović i Milica Milošević conducted a project to decorating a Christmas tree with vials that contain colloids of nanomaterials synthesized in our Laboratory. Interestingly, all of the vials hold nanoparticles of the same substance, titanium (IV) oxide, while the different colors of the colloids are achieved via surface modification of the semiconductor by various organic ligands. Using this approach, due to the charge transfer between the ligand and the nanoparticle, the change in the TiO2 bandgap takes place, which governs the interval of wavelengths that are being absorbed from the incident light. This beautiful holiday decoration is an outcome of the PhD research of Tatjana Savić, MSc.
The colors of the colloids are achieved via surface modification of titanium (IV) oxide nanoparticles using different organic ligands, including anthrarobin, 2,3-dihydroxynaphtalene, 1-hydroxy-2-naphthoic acid or 3,7-dihydroxy-2-naphthoic acid, with addition of rhodamine B and methylene blue solutions.