Dialectics of nature in materials science: binary cooperative complementary materials

Liu, Mingjie; Jiang, Lei

doi:10.1007/s40843-016-5051-6

Cited by 61 publications

(42 citation statements)

References 72 publications

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“…system [3] where 95 vol% microscopic inorganic tablets of calcium carbonate (CaCO 3 ) are bonded by 5 vol% organic matrix to form typical brick-and-mortar layered structure. [4] Although the volume fraction of organic interface layer is relatively small in nacre, it largely governs the deformation and fracture of nacre, [5,6] resulting in excellent toughness which is 3000 times higher than that of pure CaCO 3 platelets.…”

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Role of Interface Interactions in the Construction of GO‐Based Artificial Nacres

Wan

Cheng

2018

Adv Materials Inter

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The hierarchical interfacial architecture of nacre inspires the fabrication of novel high performance graphene‐based nanocomposites. Graphene has great promise for applications in aerospace and especially for flexible electronic devices, etc., due to its remarkable mechanical and electrical properties. Thus, it is significant to summarize the role of interface interactions in the construction of nacre‐inspired graphene‐based nanocomposites, which is the distinctive characteristic and important scientific progress of the review. This review first makes a comparison for the interfacial architecture of above biological materials and finds inspiration from nacre to design the interface in graphene‐based nanocomposites, which contains single interface interaction, synergistic interface interactions, and synergistic building blocks. Then, the focus is attached to the effect of different interfacial design strategies on the mechanical and electrical properties of state‐of‐the‐art GO‐based artificial nacres (GANs), including 1D fibers, 2D films, and 3D bulk materials. Additionally, the multifunctional GANs with such functions as fatigue resistance, fire retardant property, and smart nanogating, etc. are also discussed. Moreover, some potential applications and corresponding challenges and solutions of GANs are detailedly summarized. Finally, from the views of theoretical simulation and experimental research, a perspective on the roadmap of GANs in the future is also proposed.

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confidence: 99%

Role of Interface Interactions in the Construction of GO‐Based Artificial Nacres

Wan

Cheng

2018

Adv Materials Inter

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“…With the progress of nanotechnology, binary materials assembled in nanoscale become an important principle to pursuit innovative functions [2]. Especially when the binary sub-components are in the interplay distance, intimate coupling between these components becomes dominant and endows the macroscopic materials with unique physical and/or chemical phenomena with superior functionalities that cannot be achieved by either of the individual sub-components.…”

Section: A Reviving Templating Methods For Multiple Nanostructuresmentioning

confidence: 99%

A reviving templating method for multiple nanostructures

2017

Sci. China Mater.

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Binary materials, comprised by two dissimilar components in one matrix, already exist in nature from the subatomic to the universal scale with different kinds of forms (e.g., nuclei and electrons, matter and antimatter) [1]. With the progress of nanotechnology, binary materials assembled in nanoscale become an important principle to pursuit innovative functions [2]. Especially when the binary sub-components are in the interplay distance, intimate coupling between these components becomes dominant and endows the macroscopic materials with unique physical and/or chemical phenomena with superior functionalities that cannot be achieved by either of the individual sub-components. Therefore, many strategies, including 'bottom-up' wet-chemicals and 'top-down' physical-approaches, have been intensively explored to synthesize different binary materials [3][4][5][6][7]. However, the resultant binary materials are usually facing limited option of compositions and morphologies, as well as poor controlling of distributions and distances. Therefore, exploiting an effective solution to address these issues and realize the practical implementation is a significant request.Recently, Lei and colleagues at the Ilmenau University of Technology in Germany reported a concept of binary nanostructuring to tackle this long-standing challenge [8]. They ingeniously employed a unique binary-pore anodized aluminium oxide (AAO) template to successfully realize diverse binary materials on large scale. The most important key of their technique is using a selective etching process to generate the binary-pore template, which possesses not only two sets of pores (e.g., square-shaped and round-shaped pores) but also two barriers located on the opposite side of the template (Fig. 1a). These features enable the researchers to modulate each set of pore size and shape in a high degree of freedom, as well as to deposit different materials in each set of pores separately (Fig. 1b and e).From the in-situ scanning electron microscope (SEM) investigation and electric field simulation on the as-prepared template, the authors concluded that a combination of electric-field assisted dissolution and plastic oxide flow gives rise to the growth of the unique binary-pore structures (Fig. 1c). Based on this purposed mechanism, they successfully developed ternary-and quadruple-pore templates with the same selective etching process. More interestingly, the morphology of the new etched pores, like C-pores in the ternary-pore template, can be adjusted not only by the selective etching time but also by the size difference of A-pore and B-pore. Therefore, with the size difference of A-pore and B-pore decreasing, the shape of C-pores can gradually change from oval to round (Fig. 1d). Considering that their binary-pore templates are also realizable in a wide range of interpore distance from 142 ± 13 to 573 ± 27 nm, the capability of the binary-pore template is far more beyond than those of the state-of-art hard and soft templates [9].Combining with well-established approa...

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“…[ 16 ] As a result of the chains rotation, the hydrophobic main chains turn toward the NMP solution/oil interface, and the hydrophilic side chains turn toward the NMP solution/ hydrogel interface. [ 16 ] As a result of the chains rotation, the hydrophobic main chains turn toward the NMP solution/oil interface, and the hydrophilic side chains turn toward the NMP solution/ hydrogel interface.…”

Section: Doi: 101002/admi201600615mentioning

confidence: 99%

Superspreading‐Based Fabrication of Asymmetric Porous PAA‐g‐PVDF Membranes for Efficient Water Flow Gating

Zhao

Zhang

et al. 2016

Adv Materials Inter

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dissolved into N-methyl-2-pyrrolidone (NMP)) on immersed hydrogel surfaces. The prepared PAA-g-PVDF membranes have asymmetric wettability and asymmetric micro/nanoscale porous structures due to the confi ned phase inversion process that occurs at the oil/hydrogel interface. [ 11 ] Furthermore, the pore size can be controlled by adjusting the reaction temperatures and salt concentrations. The as-prepared asymmetric membranes allow water fl ow to penetrate from the micropore side (i.e., the side with micro-scale pores) to nanopore side (i.e., the side with nanoscale pores) at a lower hydrostatic pressure, yet a higher hydrostatic pressure is needed for the reverse direction. Moreover, the controlling of high water fl ux and excellent recycling property can be obtained. This interfacial confi ned fabrication strategy is crucial to the development of asymmetric membranes, especially the fabrication of fl exible fl uid diodes structures and complex fl uid controlling circuits.The asymmetric PAA-g-PVDF membranes were fabricated by the superspreading of PAA-g-PVDF solution on hydrogel surfaces under silicone oil ( Figure 1 ). Different from conventional solid surfaces, hydrogels [ 12 ] allow miscible aqueous solution to rapidly and completely spread on their surfaces [ 13 ] under oil phase, resulting in confi ned, stable, and homogeneous liquid layers. Through introducing reactants into such liquid layers, a variety of functional thin polymer fi lms with controlled thickness were effectively synthesized. [ 14 ] During the polymerization process, the hydrophobic silicone oil above and the hydrophilic hydrogel below the thin solution layer may induce different confi gurations of the polymer chains, [ 15 ] thus leading to the opposite wettability of the two sides of the membranes. Figure 1 shows the schematic process of fabricating asymmetric membranes. The poly(acrylamide) (PAAm) hydrogel containing sodium chloride (NaCl) was immersed into silicone oil (Figure 1 a). The PAA-g-PVDF solution could completely spread on the hydrogel surface within 15 s ( Figure S1, Supporting Information), forming a thin solution layer (Figure 1 b). At the same time, a salt-induced phase inversion occurred immediately along with the solvent exchange between NMP and water on surface or in the polymer network of hydrogel (Figure 1 c). Owing to partial oversaturation of NaCl between hydrogel and NMP solution, some NaCl crystal seeds formed. These NaCl crystal seeds induced the micro-phase separation at the oil/hydrogel interface, resulting in the formation of PAA-g-PVDF micelles. The salt-induced micelles gave rise to a dense skin layer with nanoscale pores ( Figure S2, Supporting Information). But no solvent exchanged at the interface between NMP solution and silicone oil. Thus, no NaCl crystal seed or PAA-g-PVDF micelle was formed, resulting in the formation of microporous structures on the PAA-g-PVDF membranes.Effective fl uid gating is of signifi cant interest in directional water transport, [ 1 ] microfl uidics, [ 2 ] microchemical react...

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Dialectics of nature in materials science: binary cooperative complementary materials

Cited by 61 publications

References 72 publications

Role of Interface Interactions in the Construction of GO‐Based Artificial Nacres

Role of Interface Interactions in the Construction of GO‐Based Artificial Nacres

A reviving templating method for multiple nanostructures

Superspreading‐Based Fabrication of Asymmetric Porous PAA‐g‐PVDF Membranes for Efficient Water Flow Gating

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