Advances in Nanostructured Functional Hydrogels for Energy HarvestingMaulida Zakia, Merreta Noorenza Biutty, Hermawan Dwi Ariyanto, Indrasukma Permanadewi, Ramavi Akbar, Irene Nindita Pradnya and Marcelinus ChristwardanaE3S Web Conf., 650 (2025) 01020DOI: https://doi.org/10.1051/e3sconf/202565001020