Fluid interfacial energy drives the emergence of three-dimensional periodic structures in micropillar scaffolds

@article{Yasuga2021FluidIE,
  title={Fluid interfacial energy drives the emergence of three-dimensional periodic structures in micropillar scaffolds},
  author={Hiroki Yasuga and Emre Iseri and Xi Wei and Kerem Kaya and Giacomo di Dio and Toshihisa Osaki and Koki Kamiya and Polyxeni Nikolakopoulou and Sebastian Buchmann and Johan Sundin and Shervin Bagheri and Shoji Takeuchi and Anna Herland and Norihisa Miki and Wouter van der Wijngaart},
  journal={Nature Physics},
  year={2021},
  pages={1-7}
}
Structures that are periodic on a microscale in three dimensions are abundant in nature, for example, in the cellular arrays that make up living tissue. Such structures can also be engineered, appearing in smart materials1–4, photonic crystals5, chemical reactors6, and medical7 and biomimetic8 technologies. Here we report that fluid–fluid interfacial energy drives three-dimensional (3D) structure emergence in a micropillar scaffold. This finding offers a rapid and scalable way of transforming a… 
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References

SHOWING 1-10 OF 48 REFERENCES

A Tissue-Like Printed Material

TLDR
Printed droplet networks might be interfaced with tissues, used as tissue engineering substrates, or developed as mimics of living tissue, as well as functionalized with membrane proteins and programmed to fold.

Self-generation of two-dimensional droplet array using oil-water immiscibility and replacement.

TLDR
The proposed method contributes to simplification and miniaturization of the system to generate droplet arrays and thus is applicable to biological and medical analysis.

Designable 3D Microshapes Fabricated at the Intersection of Structured Flow and Optical Fields.

TLDR
Using this approach, high-resolution production of complex microshapes not producible using alternative methods is demonstrated, such as octahedrons, dreidels, and axially asymmetric fibers, at throughputs as high as 825 structures/minute.

Fluid breakup during simultaneous two-phase flow through a three-dimensional porous medium

We use confocal microscopy to directly visualize the simultaneous flow of both a wetting and a non-wetting fluid through a model three-dimensional (3D) porous medium. We find that, for small flow

Fabrication of fillable microparticles and other complex 3D microstructures

TLDR
A microfabrication method is described, termed StampEd Assembly of polymer Layers (SEAL), and injectable pulsatile drug-delivery microparticles, pH sensors, and 3D microfluidic devices that the authors could not produce using traditional 3D printing are created.

Synthetic microfluidic paper: high surface area and high porosity polymer micropillar arrays.

TLDR
The proposed Synthetic Microfluidic Paper contains free thiol groups and has been shown to be suitable for covalent surface chemistry, demonstrated here for increasing the material hydrophilicity.

Entropic lattice Boltzmann method for multiphase flows: Fluid-solid interfaces.

TLDR
Simulations of drop impact onto both wettable and nonwettable surfaces show that the ELBM reproduces the experimentally observed drop behavior in a quantitative manner, and is a promising alternative for studying the vapor-liquid-solid interface dynamics.

Micro-/nanostructured mechanical metamaterials.

TLDR
Various aspects of the micro-/nano-structured materials as mechanical metamaterials, potential tools for their multidimensional fabrication, and selected methods for their structural and performance characterization are described, as well as some prospects for the future developments in this exciting and emerging field.

Synthesis and self-assembly of amphiphilic polymeric microparticles.

TLDR
The synthesis and self-assembly of amphiphilic, nonspherical, polymeric microparticles, which allowed them to self-assemble in water or at water-oil interfaces, and the geometry of the particles enabled the formation of micelle-like structures.

Human Cell Encapsulation in Gel Microbeads with Cosynthesized Concentric Nanoporous Solid Shells

TLDR
A novel polymer material for cell encapsulation and a combined novel, easy to control, synthesis method are introduced to address the key unresolved challenges in the field, and are expected to enable faster translation of novel cell therapy concepts from research to clinical practice.