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Nonlinear optical limiting, which enables dynamic radiation filtration, has important implications for photonics, medicine, and advanced manufacturing. A major challenge is the scalable fabrication of all‐inorganic materials with good stability, high optical quality, and excellent optical limiting performance. Herein, a topological engineering strategy is presented for constructing all‐inorganic composite titanate glass with robust performance in optical radiation control. Notably, the rational control of the topological configuration of highly polarized species and their local organization leads to the considerable enhancement of two‐photon absorption coefficients (≈7 times). Mechanical response can also be improved with an estimated elastic modulus and hardness of 10.5 and 115.4 GPa, respectively. This improvement allows the creation of novel all‐inorganic composite materials with excellent ability for dynamic optical radiation filtration. Results suggest that the proposed topological engineering strategy for constructing titanate glass can be extended to other highly polarized glass systems to develop a new generation of nonlinear photonic materials. [ABSTRACT FROM AUTHOR]

A series of novel environmental friendly bonded solid lubricating composite coatings were prepared via facile paint spray method and by virtue of adjusting the proportion of the composition of the coating (PTFE, water-based polyamide-imide (PAI) and LaF 3 ). The experimental results suggested that the physical, chemical and tribological properties of the water-based PAI-PTFE bonded solid lubricating composite coating with 5 wt% LaF 3 are comparable to that of organic-solvent resin composite coatings, additionally, the preparation of water-based resin bonded solid lubricating coatings have greatly minimized usage of fossil fuel. Furthermore, the work also explored the variation laws of tribological properties of the coatings under different applied load and slipping frequency. [ABSTRACT FROM AUTHOR]

The bulk metallic glass has the potential application used in mechanical moving parts serving in corrosive environments because of its excellent mechanical, tribological properties and corrosion resistance. Here, Zr 48 Cu 36 Al 8 Ag 8 BMG/graphite composites with a 3D lubricating layer are prepared via an in-situ integrated technique. The synergism of the graphite lubrication and the micro-texture effect could significantly smooth the friction coefficient curve and reduce wear. Although seawater has a lubricating effect, the corrosion affects the reliability of BMG/graphite composites. By applying an external potential to the friction system, the effect of preventing galvanic phenomena at the interface between the alloy and graphite and improving the wear resistance of the composite material can be effectively achieved. • BMG/graphite self-lubricating composite was prepared via an in-situ integrated technique. • The material has a 3D lubricating layer near surface. • Graphite lubricating films and micro-textured effect improve tribological properties. • Corrosion and wear resistance in seawater can further improved by applying an potential. [ABSTRACT FROM AUTHOR]