Fig. 1: Hydrogen bonds induced anchoring effect enabled by MXene nanosheets.
From: High-performance piezoelectric composites via β phase programming
a Schematic of in-situ stretching and alignment of PVDF polymer chain via surface terminations on Ti3C2Tx nanosheets to upgrade the spontaneous polarization (Ps). b, c Final snapshots for molecular dynamics (MD) simulations of the polarization of PVDF polymer film on the Ti3C2(OH)2 flakes (b) and Ti3C2O2 flakes (c). d Simulated separation of a single PVDF chain away from Ti3C2(OH)2 and Ti3C2O2 flakes upon pulling. Inset: The pulling force applied on each atom needed to separate the PVDF chain from MXene flakes. e, f Dihedral angles distribution of PVDF chains near the −60° (Gauche, e) and 180° (Trans, f) averaged over the last 500 ps. g Fraction of TTTT configuration as a function of time.
