Athanasios T. Giannitsis
Electronics engineer & physicist
- Almere, Netherlands
Experienced with procedures concerning experiments in electronics, physics and cleanroom laboratories. Determinant contribution in projects with affinity to measurements, testing and characterization of materials, components, and devices. Specialised in ferromagnetism, electronic instrumentation, electrical characterization of materials, microfluidics, impedance spectroscopy, cleanroom procedures.
Researched complex fluids and soft matter with emphasis in electrical characterization of multiphase fluids and liquid suspensions. Technical expertise involves analysis, with electrical impedance techniques, of magnetic materials, nanoparticle ferrofluids, and electrolytic fluids. Contribution in researching methodologies associated with microfluidics, electrical impedance sensing, microelectrode integration, cytometry and nanoparticle detection. Engineering applications involved microfluidic device fabrication and optimization, with direct application the electrical actuation and impedimetric assessment of fluids. Resolved insulation and hydrophobisation problems in microfluidics and evaluated coated interfaces by means of electrical impedance, contact angle goniometry and ellipsometry. Other research contributions involve determination of microscopic parameters of magnetic nanoparticles, such as size distribution, relaxation time, magnetic anisotropy and gyromagnetic ratio, which measured with broadband impedance spectroscopy. These measurements explained magnetic relaxation and resonance phenomena in ferrofluids. Inclusive specialization in topics relating to electromagnetism, including radio wave propagation, antennas, waveguides, transmission lines, and electromagnetic compatibility.
Faculty of Science
Optimization of the flowcell of a commercial benchtop calorimeter instrument. This industry joined project targets the improvement of the performance of the reagents mixing inside the flowcell of the calorimeter, also the enhancement of the heat transfer to the thermopile array, as well as the overall optimization of the sensitivity of the calorimeter, in order to improve the accuracy of the measurements of the thermochemical heat produced by enzymatic catalysed reactions inside the flowcell. This project involves complete redesign of the mixing flowcell as well as devises a new methodology for the calibration of the thermopile array.
Techniques: heat measurements, flowcell calorimetry, microfabrication, cleanroom, contact photolithography, micromilling, plastics bonding, contact angle measurements, atomic force microscopy, syringe pumping.
Faculty of Science.
Modification of wellplates to microfluidic plates, which are devoted for cell culturing and drug studies. Microfabrication of microfluidic and nanofluidic channels by means of glass etching. Casting elastomeric microvalves for liquid control. Microfabrication of masters, appropriate for hot embossing and injection moulding, for replicating plastic microfluidic devices. Techniques: microfluidics, microfabrication, contact photolithography, cleanroom, micromachining, plasma etching, mould casting.
Department of Electronics.
Research: Design and development of a microfluidic lab-on-chip device for impedimetric nanoparticle detection and cytometry. Sponsored by a European Commission Marie Curie European Reintegration Grant and an Estonian Science Foundation Mobilitas Grant.Teaching: Controls in electronics.
Design and development of a microfluidic device capable of measuring and handling droplets electrically. Results apply in microreactors separation. Sponsored by a European Commission Marie Curie Transfer of Knowledge grant.
Provided technical, operational and procedural support to Thomson-Prometric test centers by solving technical issues about computers, servers, networks and software.
Department of Electronics. Teaching included electronics, measurements and circuit design.
Served in an amphibious raider squadron and in a mobile infantry division.
Department of Electrical-Electronic Engineering.
Research: Dynamic properties of magnetic nanoparticle suspensions, implemented by means of wideband impedance spectroscopy. Sponsored by the European Space Agency microgravity application program that focuses on Thermal Transports in Magnetic Fluids. Results apply in controlling flow of magnetic fluids for using them as thermal agent.
Teaching: analog and digital telecommunications.
National Satellite Services Centre (NSSC).Simulation and statistical modelling of the traffic in a mobile wireless network.
Electrical and mechanical maintenance.
Distance education degree.
PhD thesis: Dynamic properties of nanoparticle magnetic systems .
Thesis: Mathematical methods for the study of electromagnetic fields.