Research areas of
Applied Physics Laboratory are:

•  pMOS dosimeters (RADFETs)
•  Radiation and post-radiation annealing effects on MOS transistors
•  High electrical field stress and post-stress annealing effects on MOS transistors
•  Gas Discharges at Low Pressures
•  Digital X-ray imaging
•  Terahertz Optics

pMOS dosimeters (RADFETs)
G.S. Ristić, M.M. Pejović, M.M. Pejović, J.P. Karamarković, M. Andjelković, N.D. Vasović
The investigation of ionizing radiation and post-radiation annealing effects on specially designed, radiation sensitive pMOS dosimetric transistors that could be used as radiation dosimeters, known as pMOS dosimeters or RADFETs, in various applications fields: radiation therapy, nuclear equipment, spacecraft, laboratory, personal dosimetry ...
List of publications

Radiation and postradiation effects on MOS transistors
G.S. Ristić, M.M. Pejović, M.M. Pejović
The investigations of the effects of ionizing radiation and post-radiation annealing on commercial MOS transistors in the aim of their radiation hardness improvement.
List of publications

High electrical field stress and poststress effects on MOS transistors
G.S. Ristić, M.M. Pejović, S.M. Aleksić, M.M. Pejović
The investigations of the defects in the gate oxide and oxide/substrate interface induced by the high field electric stress and post-electrical stress annealing of commercial MOS transistors.
List of publications

Digital X-ray imaging
G.S. Ristić
The investigation of X-ray interactions with material used in digital X-ray imaging in the aim of imaging characteristic improvements.
List of publications

Gas Discharges at Low Pressures
M.M. Pejović, G.S. Ristić, J.P. Karamarković, M.M. Pejović, E.N. Živanović, N.T. Nešić
The investigations of non-equilibrium, low temperature plasma in laboratory are performed. These investigations consider processes which occurre during the pre-breakdown, breakdown and afterglow period. The analysis of these processes are performed on the basis of the electrical methods of the electrical breakdown time delay, the breakdown voltage and glow current measurements. These measurements are performed varying different parameters such as the afterglow period, overvoltage, glow time, dose of gamma, UV and X rays.
The experimental results lead to development of qualitative method for the separation of individual particles forming during the previous breakdown and discharge, responsible for the following breakdown, as well as the breakdown voltage statistical estimation. The theoretical analysis of the experimental data should result in development of future quantitative method for separation of particular particles. These results would have significant influence on the design and manufacture of gaseous components that work in the pre-breakdown and breakdown regime.
List of publications

Terahertz Optics
J.P. Karamarković
The research is targeted to the development of quasioptical coupling concept for terahertz microelectronics. The goal is to create a design tool for modelling of small integrated terahertz antennas and optical coupling elements such as mirrors and lenses. The approach includes a solution of the Maxwell equations with the full method of moments. When applied to the planar antenna structure the method provides the current distribution in the antenna. The current distribution forms the input for the physical ray-tracing based on the Huygens principle that reveals the directional properties of the entire optical system.
List of publications

From October 23 to 26, 2012, Goran Ristic visited the University of Granada

From September 12 to 14, 2012, Goran Ristic participated at the 9th Conference of the Society of Physicists of Macedonia 2012...

From April 25 to 27, 2012, APL organized very successful conference RAD 2012

From 28 to 30 March 2012, Goran Ristić and Jugoslava Kramarković from APL, and Aleksandar Jaksic from Tyndall Institute visited ESA-ESTEC ...

From 28 February to 2 March 2011, Nikola Vasović, Miomir Todorović, Uglješa Jovanović, Jugoslav Karamarković and Goran Ristić from APL visited Josef Stefan Institute ...

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