Computational analysis of resonance conditions in face-centred-cubic metallic nanobeams for wave reception in telecommunications systems and energy harvesting

Abstract The advent of the Fourth Industrial Revolution and the increasing emphasis on green energy highlight the potential of vibration energy harvesting as a strategic solution. This approach involves capturing otherwise wasted environmental energy using nano- and micro-electromechanical generators. In this context, the present study explores the physical properties of face-centered cubic (FCC) metallic nanobeams (Au, Al, Ni, Cu, Ag, Pd, and Pt) as substrates for cantilever piezoelectric nanogenerators through molecular dynamics (MD) simulations. Additionally, the research proposes a vibration energy harvesting method that utilizes waves emitted by telecommunications towers. The results indicate that FCC metallic nanobeams can effectively capture and convert telecommunications tower waves within the superhigh frequency bands (L-S-C-X-Ku), spanning a broad spectrum of 1–18 GHz. Moreover, considering factors such as atomic weight, Young’s modulus, Poisson’s ratio, natural frequency, cost, electrical conductivity, and thermal conductivity, the study suggests that Cu, Ni, and Al nanobeams are optimal for low (1 GHz < L-S-C < 8 GHz), intermediate (8 GHz < X < 12 GHz), and high (12 GHz < Ku < 18 GHz) frequency ranges, respectively. Importantly, the findings of this research provide valuable theoretical insights for the development of cantilever piezoelectric nanogenerators.