Fabrication of syntactic foam fillers via integrated on/off-chip microfluidic methods for optimized geopolymer composites

Abstract

To meet the evolving requirements of material designability, sustainability, and eco-friendliness, the development of syntactic foams puts great emphasis on filler optimization and matrix selection. Here, we present a novel...

Effective colloidal emulsion droplet regulation in flow-focusing glass capillary microfluidic device via collection tube variation

“…The innate small-volume endows the colloidal emulsion droplets with a series of advantages including a high surface aspect ratio, trace amount of reagent consumption, ultra-fast heat, and mass transfer as well as pronounced interfacial effects, which has laid a solid foundation for their practical usage. 27–29 However, for higher-end scenarios with stringent requirements, the degree of overall monodispersity as well as on-demand accurate morphology and dimension regulation are of vital importance during the generation process of colloidal emulsion droplets. Generally, droplets are derived from fluid instability under the multiphasic circumstance, where the viscous shear force usually plays a dominant role in discretizing the continuous fluid stream.…”

Three Dimensional Printing of Bioinspired Crossed-Lamellar Metamaterials with Superior Toughness for Syntactic Foam Substitution

“…As a typical sort of architectural material, the performance of a mechanical metamaterial can be effectively regulated through the rational design of the architecture and dimension as well as composition selection. Thus, a variety of prominent functionalities have been achieved including ultrahigh strength-to-density ratio, − great energy absorption capability, − damage tolerance, − recoverability, − etc., which can be barely realized by traditional materials, even if they were reinforced with a strengthening phase to form composites. − In general, mechanical metamaterials are organized by the periodical stacking of unit cells with a dimension range spanning multiple orders of magnitude. This formation manner directly results in the homogeneous internal structure if both the dimension and composition remain constant simultaneously.…”

Synthesis of tubular silica fiber via all‐aqueous microfluidics for geopolymer regulation

“…Due to the time required for the internal sol-gel reaction, the potential tube blockage might pose a problem. Ren et al 36 associated ultraviolet lithography with microfluidics to generate core-shell droplets as preceramic templates with fine controllability and throughput, but the co-soluble xylene was volatile and toxic. Similarly, Hou et al 37 reported a microfluidic fiber spinning coupled ultraviolet curing strategy to effectively produce lightweight microfiber with randomly dispersed bubbles.…”

“…Due to the time required for the internal sol–gel reaction, the potential tube blockage might pose a problem. Ren et al 36 . associated ultraviolet lithography with microfluidics to generate core–shell droplets as preceramic templates with fine controllability and throughput, but the co‐soluble xylene was volatile and toxic.…”