Luca Pierantoni was born in Maiolati Spontini, Italy. He received the ‘Laurea’ degree (summa cum laude) in Electronics Engineering in 1988 and the Ph.D. degree in 1993 in Electromagnetics from the Department of Electronics and Automatics at the University of Ancona, Italy. From 1989 to 1995, he was with the same department, as a Research Fellow. From 1996 to 1999 he worked at the Technical University of Munich, Germany, in the Institute of High-Frequency Engineering as Senior Research Scientist. In 1999 he joined the Department of Electromagnetics at the Polytechnic University of Marche, Ancona, Italy as Assistant Professor. In 2002, he has been guest scientist at the Technical University of Munich. Presently, he is with the Department of Information Technology at the Polytechnic University of Marche. His current research interests are in the investigation of the combined Maxwell-quantum transport problem in nanomaterials, the analysis of electrodynamics in nanostructures and in the development of computational techniques for the multi-physical modeling of micro- and nano-devices.
He is a member of the Italian University Network for the Physics of Matter (CNISM), the Italian Institute of Nuclear Physics (INFN), and he is the chair of the IEEE MTT-S “RF Nanotechnology” technical committee.
The presentation deals with the multiphysics analysis and modeling of the combined electromagnetic-coherent transport problem in new-concept electronics based on nano-structured material and devices. We introduce full-wave techniques both in the frequency (energy)-domain and the time-domain for the investigation of new devices based on carbon materials, namely carbon nanotube (CNT), graphene, graphene nanoribbon (GNR). The quantum transport is described by the Schrödinger equation or its Dirac-like counterpart, for small energies. The electromagnetic field provides sources terms for the quantum transport equations, that, in turns, provide charges and currents for the electromagnetic field. In the frequency-domain, a rigorous Poisson-coherent transport equation system is provided, including electrostatic sources (bias potentials). Interesting results involve new concept-devices, such as multipath/multilayer GNR circuits, where charges are ballistically scattered among different ports under external electrostatic control. Further examples are given by the simulation of cold-cathodes for field emission based on graphene and by the analysis of optical emission/absorption by single or few layer GNR. In the time-domain, we introduce a full-wave approach, in which the Maxwell equations, discretized by the transmission line matrix (TLM) method are self-consistently coupled to the Schrödinger/Dirac equations, discretized by a proper finite-difference time-domain scheme. We show several examples of the electromagnetics/transport dynamics in realistic environments. It is highlighted that the self-generated electromagnetic field may affect the dynamics (group velocity, kinetic energy etc.) of the quantum transport. This is particularly important in the analysis of time transients and in the describing the behavior of high energy carrier bands, as well as the onset of non-linear phenomena due to external impinging electromagnetic fields. We are now working on novel applications, in particular THz carbon-based emitters and detectors, exploiting intriguing mechanisms such as frequency multiplication, semiconductor quantum cascade, optical wave mixing, Bloch oscillation, photoconductive effects.