Additive Manufacturing of Functional Microarchitected Reactors for Energy, Environmental, and Biological Applications

Kim, Seok; Kim, Do Hyeog; Kim, Won-Pyo; Cho, Young Tae; Fang, Nicholas X.

doi:10.1007/s40684-020-00277-5

Cited by 31 publications

(15 citation statements)

References 99 publications

(184 reference statements)

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“…[186] The flow pattern and the convection domain are affected by the minimum size of channels and maximum size of the overall dimensions. [4,27] The minimum channel size is associated with printing resolutions, while the maximum overall size is determined by the building platform. As shown in Figure 9b, the structures with the maximum lengths of 1500 and 1000 mm can be printed with the SLA and FDM methods, respectively.…”

Section: Selection Of 3d Printing Technologiesmentioning

confidence: 99%

“…In the commercial additively manufacturing, the printers are devoted to fabricating the structures with compact matrix, since the strength and toughness are the two factors to assess the commercial AM. [2,4,8] On the contrary, the 3D printing of HSCs is quite different for its requirement on the presence of pores in the matrix of the obtained structures. For the same reason, the activity and the porosity are not emphasized in the commercial AM.…”

Section: Am For Hierarchically Structured Componentsmentioning

confidence: 99%

“…Meanwhile, the large reaction rate is a key factor to meet the industrial energy requirements. [1][2][3][4][5] Mass transport intensification is an effective method to improve the efficiency and reaction rate in the adsorptions, chemical reactions, and electrochemical reactions, which plays crucial roles in the gas (H 2 , CH 4 , CO 2 , etc.) storage, [6,7] energy conversion, [8] and energy storage.…”

mentioning

confidence: 99%

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Hierarchically Structured Components: Design, Additive Manufacture, and Their Energy Applications

Wang

Xuan

Zhang

et al. 2021

Adv Materials Technologies

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term solutions are urgently needed before adequate supply of the renewable energy. [1,2] Improvement of efficiency in the energy production and consumption processes is a key factor to address these problems. Meanwhile, the large reaction rate is a key factor to meet the industrial energy requirements. [1][2][3][4][5] Mass transport intensification is an effective method to improve the efficiency and reaction rate in the adsorptions, chemical reactions, and electrochemical reactions, which plays crucial roles in the gas (H 2 , CH 4 , CO 2 , etc.) storage, [6,7] energy conversion, [8] and energy storage. [3,9,10] Recently, novel batteries [2,3,[11][12][13] and microreactors [8,[14][15][16][17][18] for the gas (H 2 , CH 4 , CO 2 , etc.) storage [6,7] and energy conversion [8] have been developed to meet the requirements of high efficiency and rates. In these devices, the mass transport intensification is particularly important to acquire the high selectivity, large reaction rate, great conversion efficiency. [2,8,19,20] The mass transfer steps in the monolithic adsorbents, structured catalysts, and shaped electrodes are similar. Therefore, it is possible to use an identical term to describe the monolithic adsorbents, structured catalysts, and shaped electrodes for convenience to discuss the mass transfer processes. Herein, we use the hierarchically structured components (HSCs) to describe the structures which are comprised of designed channels and matrix between channels, where the matrix is made from functional materials (ceramics, carbon, metals, etc.) with pores in the size from nanometer to sub-millimeters, as illustrated in Figure 1a. In the flow batteries and fuel cells, the assembly of bipolar plate and electrode is regarded as HSC.Generally, the reactants undergo four steps (distribution, adsorption, acceleration, and reaction) in the HSC, as shown in Figure 1b-e. The distribution starts as soon as the reactant flows into the inlet. In this step, the reactant is distributed across the HSC through the designed channels, as shown in Figure 1b. [21,22] Subsequently the fluid is adsorbed by the macropores (>50 nm) which act as buffers for the reactants in the matrix, shown in Figure 1c. [23] As shown in Figure 1d,e, the reactants are accelerated by the mesopores (2-50 nm) and transferred to the micropores (<2 nm) which provide high surface area for the active sites. [23][24][25] After reaction at the active sites, the products are transferred by the mesopores and macropores to the outlet, successively. [26,27] Therefore, the Pursuing high energy efficiency and reaction rate is an effective direction in mitigating the energy and climate crisis. Mass transfer intensification is a powerful approach to enhance the energy efficiency and reaction rate in the energy conversion and storage processes. The nature-inspired channels are outstanding tools to uniformly distribute the reactants, fast remove products, and reduce the diffusion distance for mass transfer intensification in monolithic adsorbents, structured catal...

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Section: Selection Of 3d Printing Technologiesmentioning

confidence: 99%

Section: Am For Hierarchically Structured Componentsmentioning

confidence: 99%

mentioning

confidence: 99%

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Hierarchically Structured Components: Design, Additive Manufacture, and Their Energy Applications

Wang

Xuan

Zhang

et al. 2021

Adv Materials Technologies

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“…In particular, casting methods using 3D-printed molds have been widely researched owing to their advantages and applicability to various fields with different commercial materials (filaments). In addition, recent studies have revealed the capability of 3D printing to express micropatterns, and its uses on hydrophobic surfaces 27 , microchannels 28 , 29 , and moisture capture 30 . In general, the quality (surface roughness) of the end products printed by FFF-type 3D printer highly depends on various printing conditions such as printing speed, nozzle size, filament thickness, printing resolution, printing angle, and extruder temperature.…”

Section: Introductionmentioning

confidence: 99%

Rapid manufacturing of micro-drilling devices using FFF-type 3D printing technology

Park

Lee

et al. 2021

Sci Rep

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Micro-drilling devices with different blade shapes were fabricated with a rapid and facile manufacturing process using three-dimensional (3D) printing technology. The 3D-printed casting mold was utilized to customize the continuous shape of the blades without the need for expensive manufacturing tools. A computational fluid dynamics simulation was performed to estimate the pressure differences (fluidic resistance) around each rotating device in a flowing stream. Three types of blades (i.e., 45°, 0°, and helical type) were manufactured and compared to a device without blades (i.e., plain type). As a result, the device with the 45° blades exhibited the best drilling performance. At a rotational speed of 1000 rpm, the average drilling depth of the device with the 45° blades to penetrate artificial thrombus for 90 s was 3.64 mm, which was ~ 2.4 times longer than that of helical blades (1.51 mm). This study demonstrates the feasibility of using 3D printing to fabricate microscale drilling devices with sharp blades for various applications, such as in vivo microsurgery and clogged water supply tube maintenance.

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“…Определенным оправданием служит крайняя малость коэффициента поглощения газа и близость его показателя преломления к единице. Однако достигаемая в прецизионных устройствах точность печати достигает величин микронного диапазона [8], что требует учета влияния наличия газа в установке (камере) на распространение излучения. Этой задаче и посвящена настоящая заметка.…”

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Рефракция На Неоднородности Газа При Лазерном Нагреве Металла

Trofimov

Розанов²,

Yang

et al. 2022

Оптика И Спектроскопия

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Проведен анализ распределения показателя преломления вблизи границы нагреваемого лазерным излучением металла. Найден градиент показателя преломления газа, вызванный потоком тепла, и распределение показателя преломления в неоднородно нагреваемом газе. Выполнена оценка сноса лазерного пучка вследствие рефракции излучения в газе, показывающая возрастание величины сноса для узких лазерных пучков. Ключевые слова: рефракция в газе, нагрев газа, лазерный нагрев металла.

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Additive Manufacturing of Functional Microarchitected Reactors for Energy, Environmental, and Biological Applications

Cited by 31 publications

References 99 publications

Hierarchically Structured Components: Design, Additive Manufacture, and Their Energy Applications

Hierarchically Structured Components: Design, Additive Manufacture, and Their Energy Applications

Rapid manufacturing of micro-drilling devices using FFF-type 3D printing technology

Рефракция На Неоднородности Газа При Лазерном Нагреве Металла

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