T. Rodrigues- Marinho

Polytechnic Institute of Cavado and Ave | IPCA · Applied Artificial Intelligence Laboratory

Polymer-based flexible energy harvesting systems based on several physical phenomena such as piezo-, pyro-, thermo- and triboelectric effects have become increasingly relevant for self-powered nanogenerator devices to, as an example, replace batteries in remote or inaccessible places or develop self-powered sensors. Tailored properties of the mater...

Polymer‐based composites combining the flexibility, low density, and processability of the matrix with the tailored functional performance provided by the fillers are also particularly suitable for large area, flexible, and printable applications. Herein, polyvinylidene fluoride (PVDF) composites with conductive graphene nanoplatelets (G‐NPL) and h...

Organic piezoelectric materials stand out compared to ceramic materials due to their lightweight, flexibility, and chemical and mechanical resistance and are applied in an increasing number of applications, from sensors and actuators, energy harvesting and storage, biomedical to environmental areas. The present chapter focuses on organic piezoelect...

Energy harvesting systems for low-power devices are increasingly being a requirement within the context of the Internet of Things and, in particular, for self-powered sensors in remote or inaccessible locations. Triboelectric nanogenerators are a suitable approach for harvesting environmental mechanical energy otherwise wasted in nature. This work...

Photopolymerization or UV curing represents a fast and solvent-free technique to obtain polymer-based composites, being one of the main methods used in lithographic processes, surface coatings and the manufacture of integrated circuits. This work reports on the development of UV curable barium titanate/polyurethane acrylate (BaTiO3/PUA) composites...

This work reports on the development of polymer composites for load sensing applications. Three thermoplastic polymers, one with elastomeric behaviour, namely poly(styrene-butadiene-styrene) and poly(styrene–ethylene/butylene-styrene), and a semi-crystalline fluorinated polymer, poly(vinylidene fluoride), were selected as hosting matrices. In order...

The fabrication of highly transparent piezoelectric transducers is of increasing interest in the scientific and technological community. In this work, polymer based piezoelectric transducers were fabricated by the direct deposition of each layer forming the transducer on the desired substrate, avoiding the use of coupling layers. Transparent conduc...

CoFe2O4 (CFO) ferrite nanoparticles with an average size of 15 nm were synthesized by a hydrothermal method and used to develop magnetodielectric (MD) composites with the piezoelectric diamine 2CN/diamine 0CN as polymer matrix. It is shown that the dielectric constant, dielectric loss, and saturation magnetization values of the composites increase...