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Aims. We analyze the effect of the sedimentation of 22 Ne on the local white dwarf luminosity function by studying scenarios under different Galactic metallicity models. Methods. We make use of an up-to-date population synthesis code based on Monte Carlo techniques to derive the synthetic luminosity function. The code incorporates the most recent and reliable cooling sequences and an accurate modeling of the observational biases, under different scenarios. We first analyzed the case when a constant solar metallicity model is used, and compared the models with and without 22 Ne sedimentation with the observed luminosity function for a pure thin disk population. Then, the possible effects of a thick disk contribution are analyzed. We also studied different metallicity model scenarios including 22 Ne sedimentation. The analysis is quantified from an statistical χ 2 -test value for the complete, as well as for the most significant regions of the white dwarf luminosity function. Finally, a best-fit model along with a disk age estimate is derived. Results. Constant solar metallicity models are not able to simultaneously reproduce the peak and cut-off of the white dwarf luminosity function. The extra release of energy due to 22 Ne sedimentation piles up more objects in brighter bins of the faint end of the luminosity function. The contribution of a single burst thick disk population increases the number of stars in the magnitude interval centered around M bol = 15.75. Among the metallicity models studied, the one following a Twarog's profile is disposable. Our best fit model was obtained when a dispersion in metallicities around the solar metallicity value is considered along with a 22 Ne sedimentation model, a thick disk contribution and an age of the thin disk of 8.8 ± 0.2 Gyr. Conclusions. Our population synthesis model is able to reproduce the local white dwarf luminosity function with a high degree of precision when a dispersion in metallicities around the solar value model is adopted. Although the effects of 22 Ne sedimentation are only marginal and the contribution of a thick disk population is minor, both of them help in better fitting the peak and the cut-off regions of the white dwarf luminosity function.

High-performance hydrogels play a crucial role as solid electrolytes for flexible electrochemical supercapacitors (ESCs). More specifically, all solid-state ESCs based on renewable, biodegradable and/or biocompatible hydrogels doped with inorganic salts...