Computational study on surface energy of amorphous DLC with respect to hybridization state of carbon and potential functions

DLC-Coated Ferroelectric Membranes as Vascular Patches: Physico-Chemical Properties and Biocompatibility

“…The rise in free surface energy from its dispersive component was described by Kalin et al [ 43 ] in the case of poly(tetrafluoroethylene). The increase in free surface energy after the deposition of the DLC coating may be due to the combined effects of non-polar interaction (or dispersive component) induced by sp 2 bonds, and polar interaction by dangling bonds [ 44 ].…”

Emerging Amorphized Metastable Structures to Break Limitations of 2D Materials for More Promising Electrocatalysis

“…In the in situ growth process, a very high surface energy of the system should be required for 2D HA metastable materials by considering the “surface energy matching theory”. An intuitive difference on the surface energy of stable 2D and 2D HA metastable materials is the 70–80 mJ m –2 of graphene versus >3 J m –2 of amorphous graphene . Achieving such high surface energy levels for 2D HA metastable materials is challenging for traditional systems.…”

“…A more comprehensive comparison of the techniques described above is presented in Table . It is clear that most techniques (e.g., the ion exchange, − epitaxial growth, ,, solvent mediation with surfactant, electrochemical process, and surface etching with chemicals ,, ) are predominantly focused on the metastable phase structures with or without partially disordered structures. Some techniques are more suited for the amorphization (e.g., ion etching through CVD), while others are more suited for the stabilization of metastable structures (e.g., solvent mediation with ionic liquid). − Direct fabrication of 2D HA metastable materials, particularly ultrathin structures, with the above techniques is highly challenging.…”

Effects of SiO2 Contaminant on Thermo-Mechanical/Chemical Properties and Lubricity of PFPE Lubricants

“…Figure 1 shows the preparation of SiO 2 -contaminated PFPE lubricant on a-C film surface. In Figure 1b, the upper and lower a-C films are prepared using the liquid quenching method [36] with the dimension of 100 Å (W) × 100 Å (L) × 20 Å (H), which contains a total of 22,063 carbon atoms with a density of 2.2 g/cm 3 . The lubricant thickness is 13 Å for both Ztetraol and ZTMD.…”