Tadeusz Habdank-Wojewódzki AGH-UST dept. Electronics, Krakow, Poland,
Josef Habdank, Graphenalloy, Copenhagen, Denmark
Michal Radwanski DTU Electro, Copenhagen, Denmark.
Tadeusz Pisarkiewicz AGH-UST dept. Electronics, Krakow, Poland.

Graphene Quantum Tunneling Composites (GQTC) [1, 2, 3] modified with Silicon Carbide (SiC) manufactured using mechanochemical processes as termopressure sensors for applications in electrotribology and flow sensors are the subject of modeling of the admittance as the function of temperature and force [4]. GQTC/SiC made with high-energy co-milling of ceramics and graphene precursor receives desired sensory properties. GQTC/SiC was fabricated such that the resulting material stayed close to percolation threshold which resulted in high sensory sensitivity of the admittance based on tunneling effect between grains of the filler. The purpose of this poster is to present the admittance measurements and model of the GQTC/SiC sensory materials as a function of pressure and temperature and to provide frequency characteristics [5]. Having such a model allows creating a range of practical applications of the sensory materials such as detecting physical condition of smart tires emerging as a trend in the development of the automotive industry. The material was manufactured using the high-energy Fritsch ball mill and the sensory data used for modeling was collected using Hioki impedance spectrometer. The results show very promising sensory properties which can be applied to parametric sensors in cubic and planar topologies. Cubic topology is used as wear sensors and pressure sensors and planar topology, mainly with fractal electrodes, as dynamical gas flow sensors, smart tires with tire pressure monitoring systems (TPMS) [6] and energy harvesters [7] and pressure and temperature sensors. Parameters estimated in real time during decomposition using reverse, nonlinear matrices or based on model aim at predicting the temperature.

[1] J. Habdank, T. Habdank-Wojewodzki, patent DK 2011 00898 A1, (2013)
[2] J. Habdank, T. Habdank-Wojewodzki, M. Radwański, Carbonhagen (2014)
[3] J. Habdank, T. Habdank-Wojewodzki, M. Radwański, Carbonhagen (2013)
[4] M.M. El-Tonsy, H.A. Shaaban, O.M.Al-Aqbi, R.M. Felfel, IJSEA Vol. 4 No. 2, pp. 71-78 (2015)
[5] P. A. Basnayaka, M. K. Ram, L. Stefanakos, A. Kumar, Graphene Vol. 2 No. 2, pp. 81-87, (2013)
[6] B. Han, S. Ding, Y. Yu, X. Yu, Su. Dong, J. Ou ,Sensors Journal, IEEE , Vol. PP No. 99, pp. 1, (2015)
[7] C. R. Bowen and M. H. Arafa, Systems. Adv. Energy Mater., Vol. 5 No. 7, (2015)

Josef A. Habdank, research, development and implementation specialist, B.Eng in engineering (Copenhagen University College of Engineering, Denmark) and M.Sc. in mathematics (Danish Technical University, Copenhagen, Denmark). Owner at Graphenalloy, consultant at Thomson Reuters. Formerly researcher at Danish Defense and Jaguar Cars. Has experience in research and development in the fields of material sciences, mathematical modeling, prototype design, experimental research, high speed algorithms, computational clusters and big data mining.