Lightweight multifunctional materials represent an increasing field in materials science and engineering based on their technological applications in a wide variety of areas ranging from sensors and actuators, materials for structural and environmental applications, energy generation and storage, or biomedicine, among others. This chapter presents an overview on the main types, preparation techniques and applications of the most relevant lightweight multifunctional materials, as well as on relevant materials to be applied and/or implemented in lightweight structures.FCT (Fundação para a Ciência e Tecnologia) for financial support
under the framework of Strategic Funding grants UID/CTM/50025/2019,
UID/FIS/04650/2019; and supported by FEDER funds through the COMPETE 2020
Programme under the project number PTDC/FIS-MAC/28157/2017 and POCI-01-0145-
FEDER-007688. The authors also thank the FCT for financial support under grants
SFRH/BPD/112547/2015 (C.M.C.) and SFRH/BPD/110914/2015 (P. C.). Financial
support from the Basque Government under the ELKARTEK, HAZITEK and PIBA
(PIBA-2018-06
