Mass transfer analysis of ultrafiltration using spacers based on triply periodic minimal surfaces: Effects of spacer design, directionality and voidage

Sreedhar, Nurshaun; Thomas, Navya; Al‐Ketan, Oraib; Rowshan, Reza; Hernandez, Hector H.; Arafat, Hassan A.

doi:10.1016/j.memsci.2018.05.028

Cited by 73 publications

(44 citation statements)

References 31 publications

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“…The design is based on triply periodic minimal surfaces (TPMS) (see Figure D) where instead of periodic struts, a single, continuous, smooth, and periodic structure is employed. The topological characteristics of TPMS‐based structures drive many desired multifunctional properties . For example, the high surface area to volume ratio provides a wider spread of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…Also, the smoothly curved sheet may reduce the amount of catalyst that can be trapped in the corners due to sharp edges, and also reduce stress concentration that can occur on these sharp edges . Finally, the entangled nature of TPMS topologies can enhance turbulence and increase conversion efficiency …”

Section: Introductionmentioning

confidence: 99%

“…The topological characteristics of TPMS-based structures drive many desired multifunctional properties. [9][10][11][12][13] For example, the high surface area to volume ratio provides a wider spread of the catalyst. Also, the smoothly curved sheet may reduce the amount of catalyst that can be trapped in the corners due to sharp edges, and also reduce stress concentration that can occur on these sharp edges.…”

Section: Introductionmentioning

confidence: 99%

“…14,15 Finally, the entangled nature of TPMS topologies can enhance turbulence and increase conversion efficiency. 9,10,16 TPMS topologies have been known for over a century 8 and have been observed in nature in soap films and butterfly wings. 17,18 Examples of TPMS topologies are shown in Figure 2A.…”

Section: Introductionmentioning

confidence: 99%

“…Although they have been discovered for a long time, their realization as a three-dimensional structure was not an easy task due to their structural complexity. However, recent advances in fabrication techniques facilitated this task and many recent studies have successfully fabricated and tested these topologies in different engineering disciplines such as water treatment, 9,10,16 lightweight materials, [19][20][21][22][23] and composites. [24][25][26][27] A minimal surface can be converted into a cellular material with a defined volume using two main approaches as explained by Kapfer et al 28 and shown in Figure 2B.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Additive manufacturing of architected catalytic ceramic substrates based on triply periodic minimal surfaces

et al. 2019

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The exhibited geometry of catalytic substrates can have a significant influence on the chemical activity and efficiency. Controlling their geometry can be challenging using the traditional techniques. In this work, we propose new and novel catalytic substrates with architected and controllable topologies based on the minimal surfaces framework. A novel design approach and an additive manufacturing (AM) technique were proposed to manufacture the catalytic substrates using ceramic materials. After 3D printing, their mechanical and flow properties were investigated experimentally. An elastic‐plastic‐damage coupled model was employed to investigate the underlying deformation mechanism of the investigated substrates. Results showed that the CLP substrate exhibited the highest mechanical properties as well as the least pressure drop among the tested substrates. Also, numerical simulations showed that the strut‐based substrates exhibit stress localization which leads to faster failure, while stress is distributed more homogeneously in the sheet‐based substrates. While the model showed to have a good agreement in the experimental and simulation stress‐strain responses, the damage mechanism was not fully captured by the numerical simulations. This was attributed mainly to the process‐induced defects in the form of microcracks and microvoids that can alter the nature of deformation and damage.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Additive manufacturing of architected catalytic ceramic substrates based on triply periodic minimal surfaces

et al. 2019

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Multifunctional Mechanical Metamaterials Based on Triply Periodic Minimal Surface Lattices

2019

Self Cite

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In nature, cellular materials exhibit enhanced multifunctionalities driven mainly by their sophisticated topologies and length scales. These natural systems have inspired the development and expansion of synthetic architected materials for revolutionary applications. Consequently, both the design and synthesis techniques gained considerable attention and have massively progressed over the last few decades. Such materials with topology-controlled properties are commonly known as "metamaterials." Architected materials with topologies based on triply periodic minimal surfaces (TPMS) which are of particular interest have attracted much attention recently due to their mathematically controlled fascinating topologies and their exhibited physical and mechanical properties. Herein, the design, synthesis, and use of TPMS in the field of metamaterials and metacomposites for several applications are focused upon. The design process to create TPMS-based 3D lattices is summarized and the different manufacturing processes used to fabricate these lattices are highlighted. Herein, the materialtopology-mechanical properties relationship of different TPMS-based lattices that are investigated in the literature is discussed. A further objective is to highlight the applications where TPMS-based lattices or composites can be efficiently used as well as the research areas to be explored. development of macro/micro/nanomechanics-based constitutive models and computational tools that can be used effectively in guiding the design of advanced materials. He is particularly active in using digital design and 3D printing for creating multifunctional architected materials and composites for various applications.

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3D Printing of Ordered Mesoporous Silica Using Light‐Induced Sol‐Gel Chemistry

Gluns,

Zhao,

Spiehl

et al. 2024

Adv Funct Materials

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Mesoporous ceramic materials used in applications such as catalysis, filtration, or sensing, are usually hierarchically structured. Thereby, their structural hierarchy is often inherently related to the manufacturing methods and cannot be independently locally designed along all length scales. This study combines light‐based additive manufacturing and bottom‐up light‐induced self‐assembly (LISA) sol‐gel chemistry to engineer hierarchically structured porous silica from the nanoscale to the macroscopic object geometry. A LISA‐based printing solution that enables printing of ordered mesoporous silica with geometrically complex shapes by using a commercially available digital light processing (DLP)‐based 3D printer is presented. This approach exploits the self‐assembly process of block copolymer mesopore templates, such as Pluronic P123, and hydrolysis and condensation of silica precursors upon irradiation in the 3D printer to shape mesoporous silica objects. Furthermore, different resins are added to the LISA solution to print 3D silica‐resin objects. Mesoporous silica objects up to 10 mm in size, consisting of ordered mesopores with diameters around 5 nm and having high specific surface areas of ≈400 m2 g−1 are successfully printed with a fast and easy post‐processing.

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Mass transfer analysis of ultrafiltration using spacers based on triply periodic minimal surfaces: Effects of spacer design, directionality and voidage

Cited by 73 publications

References 31 publications

Additive manufacturing of architected catalytic ceramic substrates based on triply periodic minimal surfaces

Additive manufacturing of architected catalytic ceramic substrates based on triply periodic minimal surfaces

Multifunctional Mechanical Metamaterials Based on Triply Periodic Minimal Surface Lattices

3D Printing of Ordered Mesoporous Silica Using Light‐Induced Sol‐Gel Chemistry

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