Facile Airbrush Fabrication of Gas Diffusion Layers Comprising Fine-Patterned Hydrophobic Double-Layer and Hydrophilic Channel for Improved Water Removal in Polymer Electrolyte Membrane Fuel Cells

Chun, Hyunsoo; Kim, Yongtae; Chae, Hyoungseok; Lee, Minyoung; Han, Byeol; Kim, Minwook; Choi, Hyunsik; Hur, Jong Won; Kim, Han-Sang; Ok, Jong G.

doi:10.1007/s40684-020-00254-y

Cited by 5 publications

(2 citation statements)

References 24 publications

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“…[38][39][40] However, a mismatch in wetting properties between the channel wall and the continuous phase can hinder the stable production of emulsions. [41] This imbalance can also cause the adhesion of emulsions onto the channel surface, resulting in nonuniform sizes, irregular shapes, and leakage of entrapped molecules. To address these issues, we modified the channel surface of the microfluidic device with a hydrophilic PDA coating and evaluated its efficacy.…”

Section: Microfluidic Device With Hydrophilic Coating For Secondary E...mentioning

confidence: 99%

Multichamber PLGA Microparticles with Enhanced Monodispersity and Encapsulation Efficiency Fabricated by a Batch‐Microfluidic Hybrid Approach

Choi,

Kang,

Choi

et al. 2023

Advanced NanoBiomed Research

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Microparticles with multiple internal chambers hold great promise as drug delivery systems due to their ability to sustain the release of drugs with short half‐lives. However, conventional batch methods used for their fabrication have limitations in terms of encapsulation efficiency and particle size distributions, while microfluidic methods suffer from low production efficiency. Herein, a batch‐microfluidic hybrid method is presented for fabricating poly(DL‐lactic‐co‐glycolic acid) (PLGA) polymeric microparticles with uniformly distributed, multiple inner microchambers. A scalable batch method is utilized for primary water‐in‐oil (W/O) emulsions, combined with a precise microfluidic approach for generating controlled secondary emulsions. This approach results in highly uniform PLGA microparticles with tunable size and improved encapsulation efficiency. Additionally, the effect of polydopamine‐based surface hydrophilic modification of microfluidic channels on drug encapsulation efficiency is investigated, achieving an efficiency of approximately 85%. The prepared multichamber PLGA microparticles exhibit an extended‐release profile without initial burst release, demonstrating their potential for sustained drug delivery in various biomedical applications.

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Section: Microfluidic Device With Hydrophilic Coating For Secondary E...mentioning

confidence: 99%

Multichamber PLGA Microparticles with Enhanced Monodispersity and Encapsulation Efficiency Fabricated by a Batch‐Microfluidic Hybrid Approach

Choi,

Kang,

Choi

et al. 2023

Advanced NanoBiomed Research

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“…The airbrushing of an Ag nanoparticle solution as a control experiment (see Fig. S3 in the Supplementary Information) was conducted by using a custom-designed airbrushing system whose detailed setup and operation procedure were described elsewhere 64,65 .…”

Section: Speedin Part Ii: Ag Nanoparticle Solution Coating and Embeddingmentioning

confidence: 99%

Solution-processable electrode-material embedding in dynamically inscribed nanopatterns (SPEEDIN) for continuous fabrication of durable flexible devices

Lee

Chae

et al. 2021

Microsyst Nanoeng

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A facile and scalable lithography-free fabrication technique, named solution-processable electrode-material embedding in dynamically inscribed nanopatterns (SPEEDIN), is developed to produce highly durable electronics. SPEEDIN uniquely utilizes a single continuous flow-line manufacturing process comprised of dynamic nanoinscribing and metal nanoparticle solution coating with selective embedding. Nano- and/or micro-trenches are inscribed into arbitrary polymers, and then an Ag nanoparticle solution is dispersed, soft-baked, doctor-bladed, and hard-baked to embed Ag micro- and nanowire structures into the trenches. Compared to lithographically embossed metal structures, the embedded SPEEDIN architectures can achieve higher durability with comparable optical and electrical properties and are robust and power-efficient even under extreme stresses such as scratching and bending. As one tangible application of SPEEDIN, we demonstrate a flexible metal electrode that can operate at 5 V at temperatures up to 300 °C even under the influence of harsh external stimuli. SPEEDIN can be applied to the scalable fabrication of diverse flexible devices that are reliable for heavy-duty operation in harsh environments involving high temperatures, mechanical deformations, and chemical hazards.

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Producing Micro-Power with Microfluidic Enzymatic Biofuel Cells: A Comprehensive Review

Khan

Tanveer²,

Park³

et al. 2022

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Facile Airbrush Fabrication of Gas Diffusion Layers Comprising Fine-Patterned Hydrophobic Double-Layer and Hydrophilic Channel for Improved Water Removal in Polymer Electrolyte Membrane Fuel Cells

Cited by 5 publications

References 24 publications

Multichamber PLGA Microparticles with Enhanced Monodispersity and Encapsulation Efficiency Fabricated by a Batch‐Microfluidic Hybrid Approach

Multichamber PLGA Microparticles with Enhanced Monodispersity and Encapsulation Efficiency Fabricated by a Batch‐Microfluidic Hybrid Approach

Solution-processable electrode-material embedding in dynamically inscribed nanopatterns (SPEEDIN) for continuous fabrication of durable flexible devices

Producing Micro-Power with Microfluidic Enzymatic Biofuel Cells: A Comprehensive Review

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