- Head of Research Group: Prof. Zsolt SZABÓ
- Members of the Group: András ESZES
- Contact: szabo.zsolt@itk.ppke.hu
- In our laboratory structures with special electromagnetic properties, often called metamaterials are designed, fabricated and characterized. The fundamental idea behind the metamaterial research is that the interaction of electromagnetic waves with matter is governed not only by the chemical composition, but structuring can produce novel properties, which are not available in bulk form. We can design structures from microwave and mm wave frequencies to the optical wavelengths. The designed structures can find their applicabilty in several industries, e.g. in telecommunications by increasing the performance of antennas, they can be applied as novel sensing platforms for biomedical and environmental applications or as metasurfaces for subwavelength imaging.
- Our metamaterial research has resulted in an accumulated knowledge in subwavelength resonators, which are particularly suitable for sensing applications. Recently, we have created several sensors working in the microwave regime for microfluidic applications. For example, a microfluidic mixer is combined with a complementary split ring resonator (CSRR), to enable the in-situ monitoring of the mixing of two liquids. Since dual-band devices are more reliable and provide additional information about the sample under test, the first two resonant frequencies of the CSRR are utilized for sensing. As another example a dual-principle sensor is presented, whose operation is based on changes in electrostatic capacitance and resonance shifts at microwave frequencies. In this case the fluidic part is made by 3D printing.
The electromagnetic behavior of a metasurface with near zero refractive index. The measurement setup of a subwavelength resonator. The geometry and the microwave response of the dual-technology fluidic level sensor.
