A5053418598- Silicone and Siloxane Chemistry
- Electromagnetic Compatibility and Measurements
- Spacecraft Design and Technology
- Electromagnetic wave absorption materials
- Gas Dynamics and Kinetic Theory
- Advanced ceramic materials synthesis
- Advanced Antenna and Metasurface Technologies
- Planetary Science and Exploration
- Millimeter-Wave Propagation and Modeling
- Diamond and Carbon-based Materials Research
- Electromagnetic Launch and Propulsion Technology
- Spacecraft and Cryogenic Technologies
- Magnetic and Electromagnetic Effects
- Scientific Research and Discoveries
- High-Velocity Impact and Material Behavior
- Microwave and Dielectric Measurement Techniques
- Mechanical Behavior of Composites
- Fiber-reinforced polymer composites
- Space Satellite Systems and Control
- Advanced materials and composites
- Antenna Design and Analysis
- Cellular and Composite Structures
- Catalytic Processes in Materials Science
- Ionosphere and magnetosphere dynamics
- Energetic Materials and Combustion
Sapienza University of Rome
2015-2024
Universidade de Ribeirão Preto
2009
Universidade de São Paulo
2009
The electromagnetic (EM) wave attenuation by building walls is experimentally investigated, focusing on the frequency range 700 MHz-5 GHz. results of this research can be used in planning indoor radio coverage wireless access networks like 2G, 3G, 4G, WiFi, and future 5G mobile phone systems, study satellite navigation applications, evaluation resident population exposure to fields emitted base stations (RBSs) network (RAN). Measurements are obtained using a portable vector analyzer (VNA)...
Abstract Lightweight multifunctional electromagnetic (EM) absorbing materials with outstanding thermal properties, chemical resistance and mechanical stability are crucial for space, aerospace electronic devices packaging. Therefore, 3D porous graphene aerogels attracting ever growing interest. In this paper we present a cost effective lightweight graphene-based aerogel EM wave absorption, constituted by poly vinylidene fluoride (PVDF) polymer matrix filled nanoplatelets (GNPs) show that the...
We have investigated the electromagnetic (EM) shielding effectiveness (SE) of building walls built in different ages. The measurements were carried out city Rome, analyzing typologies from Roman Empire historical ruins up to modern reinforced concrete and steel/glass buildings. method consisted a measurement performed by means portable two-port vector network analyzer (VNA) connected couple light antennas located opposite positions with respect middle wall. explored frequencies range 0.7-5.0...
The present work analyzes the possibility to employ carbon nanostructures as a basic material prevent erosion effects of atomic oxygen suffered by fiber reinforced polymeric used in low earth orbit space environment. application thin protecting coatings base materials is widely method for preventing induced erosion, and thus degradation. generic purpose integrate onto composites surface order develop substrate advanced nanocomposite protection. final goal characterization...
Abstract In the last decades research on composite materials have been acquiring importance due to possibility of increasing material mechanical performances while contemporary decreasing both mass and volume structures. Composites are widely used in space vehicles systems as structural materials, thermal blankets, control conformal coatings, adhesives, lubricants, etc. Exposure composites environment may result different detrimental effects via modification their chemical, electrical,...
Carbon/carbon (C/C) structures are widely considered for space thermal protection systems (TPSs), being able to withstand critical reentry conditions thanks an excellent stability. In low-Earth-orbit long-time missions, however, the TPS effectiveness is significantly lowered due surfaces’ prolonged staying within harsh environment. particular, detrimental oxidation cycles and atomic oxygen (AtOx) exposure greatly affects integrity, thus leaving spacecraft’s outer surface less protected...
This work reports a series of measurements the attenuation UMTS and GSM mobile phone signal by buildings structures in city Rome. The context research is concern about exposure population resident to electromagnetic fields emitted radio base stations access network. aim analyze conservative method measurement for outdoor-to-indoor attenuation. takes intrinsically into account presence apertures like doors windows on wall buildings, materials around within buildings. are carried out...
The growing quantity of debris in Earth orbit poses a danger to users the orbital environment, such as spacecraft. It also increases risk that humans or manmade structures could be impacted when objects reenter Earth's atmosphere. During design spacecraft, requirement may specified for surviv-ability spacecraft against Meteoroid / Orbital Debris (M/OD) impacts throughout mission; further-more, structure is designed insure its integrity during launch and, if it reusable, descent, re-entry and...
We measure the average electromagnetic absorption cross section of building materials in millimeter frequency range between 50 GHz and 68 GHz, through reverberation chamber technique. In context telecommunications, it is important to characterize material behavior at those frequencies for future electromagnetics applications oriented 5G mobile networks. A operated mm a differential measurement quality factor - with without performed order estimate power dissipated sample. Several including...