Track-Etch Membranes as Tools for Template Synthesis of Nano-/Microstructures and Devices

Chakarvarti, S. K.

doi:10.1007/978-3-662-44324-8_473

Cited by 4 publications

(4 citation statements)

References 66 publications

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“…The peaks at 223.5 nm and 317.5 nm for our device (Figure 4F) suggests that the larger particles within LCCM and CGM may not be entirely filtered out or particles aggregate after permeating through the NCAMs. As a possible explanation on how larger particles can traverse the pores, we note that NCAMs are prepared by chemical etching following a nuclear track‐etch process (W. P., 2016). The nominal size of the nanocapillaries is 200 nm; however, per the manufacturer, a variation of +/‐ 10%–15% in size can be expected (Vitarelli Jr et al., 2011).…”

Section: Discussionmentioning

confidence: 99%

Cross‐flow microfiltration for isolation, selective capture and release of liposarcoma extracellular vesicles

Casadei

Choudhury

Sarchet

et al. 2021

J of Extracellular Vesicle

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We present a resource‐efficient approach to fabricate and operate a micro‐nanofluidic device that uses cross‐flow filtration to isolate and capture liposarcoma derived extracellular vesicles (EVs). The isolated extracellular vesicles were captured using EV‐specific protein markers to obtain vesicle enriched media, which was then eluted for further analysis. Therefore, the micro‐nanofluidic device integrates the unit operations of size‐based separation with CD63 antibody immunoaffinity‐based capture of extracellular vesicles in the same device to evaluate EV‐cargo content for liposarcoma. The eluted media collected showed ∼76% extracellular vesicle recovery from the liposarcoma cell conditioned media and ∼32% extracellular vesicle recovery from dedifferentiated liposarcoma patient serum when compared against state‐of‐art extracellular vesicle isolation and subsequent quantification by ultracentrifugation. The results reported here also show a five‐fold increase in amount of critical liposarcoma‐relevant extracellular vesicle cargo obtained in 30 min presenting a significant advance over existing state‐of‐art.

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Section: Discussionmentioning

confidence: 99%

Cross‐flow microfiltration for isolation, selective capture and release of liposarcoma extracellular vesicles

Casadei

Choudhury

Sarchet

et al. 2021

J of Extracellular Vesicle

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“…However, the small thickness, non-tortuosity of pores, extremely narrow pore size distribution, and controlled pore geometry per unit area make them promising for use in the process of separating oil-in-water emulsions [25][26][27][28][29]. In addition to the use of TeMs in water filtration, they can be used in microelectronics, bio-and nanotechnologies (for example, as a means of delivering medicines), medicine, pharmaceutical, food and perfume industries, chemical industry, ecology and other fields [29][30][31]. Polytetrafluoroethylene Eurasian Journal of Chemistry.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Poly(Ethylene Terephthalate) Track-Etched Membranes for the Separation of Water-Oil Emulsions

Yeszhanov¹,

Korolkov²,

Shakayeva³

et al. 2023

Eurasian J. Chem.

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Rapid industrial growth in the petrochemical, pharmaceutical, metallurgical and food industries, as well as stormwater that accumulates pollution from the roadway and the territories of motor transport enterprises, gas stations, car washes and other municipal services have led to the formation of a large amount of oily wastewater. Oil-containing wastewater is a multicomponent, multiphase water system and, as a rule, is in a state stabilized by various factors, which greatly complicates their processing. Pollution of water sources with oil-containing compounds leads to negative consequences for both living organisms and human health. Therefore, the need to treat oily wastewater is an urgent problem. In this article, poly(ethylene terephthalate) track-etched membranes (PET TeMs) with pore diameters of ~ 5.1 μm and pore density of 1∙106 pore/cm2 were modified by formation of polyelectrolyte complexes of PET TeMs surface with poly(allylamine) (PAAm) and tested for oil-water separation by using hexadecane/water (at pH=2) and chloroform/water (at pH=2) emulsions. Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscope (SEM), en-ergy dispersive X-ray (EDX) analysis, contact angle measurements were used for membrane characterization. The efficiency of oil-water separation was evaluated by flux measurements. Results showed separation per-formance of 267 mL/m2·s for hexadecane/water (pH=2) and 100 mL/m2·s for chloroform/water (pH=2) at vacuum pressure of 700 mbar.

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“…3,7,10−12 Despite the progress, challenges remain, particularly in their limited capabilities to achieve a uniform morphology on a large scale. 13 Especially for soft polymeric materials, it is extremely challenging to obtain uniform and ordered soft nanopillar/tube arrays with decent sample sizes due to the ease of deformation and collapse. 3 In addition, the transfer of soft nanoarrays onto a flexible substrate is difficult because delicate nanopillars/tubes with high aspect ratios are easily damaged.…”

mentioning

confidence: 99%

“…Indeed, template-based synthesis using track-etched membranes can be traced to 1989 . Since then, various nanopillar and nanotube arrays (e.g., Pt, ZnO, Al 2 O 3 , SiO 2 , and silk) have been developed using different methods (e.g., wetting deposition, electrodeposition, and atomic layer deposition). ,,− Despite the progress, challenges remain, particularly in their limited capabilities to achieve a uniform morphology on a large scale . Especially for soft polymeric materials, it is extremely challenging to obtain uniform and ordered soft nanopillar/tube arrays with decent sample sizes due to the ease of deformation and collapse .…”

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confidence: 99%

Capillary-Assisted Assembly of Soft Conductive Polymer Nanopillar/Tube Arrays and Applications

Chen,

Shang,

Hang

2024

Nano Lett.

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Nanopillar/tube arrays have emerged as encouraging platforms, possessing remarkable advantages, including large specific areas and highly aligned orientations. Despite the progress of nano/microfabrication technologies, facile and controllable fabrication of conductive polymer nanopillar/tube arrays remains challenging. In this study, we demonstrate that the air–liquid interfacial self-assembly can be extended to obtain three-dimensional nanostructured arrays. A smart and novel method is proposed for preparing uniform conductive polymer nanopillar/tube arrays by a template-mediated interfacial synthesis approach. By utilizing capillary force, precise control processes of the nanostructure and patterned structure can be easily realized. Furthermore, a transfer strategy is devised, allowing for scalable fabrication and expansion of the applicability. Applications, including antibacterial surfaces and actuators, have been demonstrated. We extend the air–liquid interfacial synthesis technique as a powerful and universal strategy for producing ordered nanopillar/tube arrays and show the great potential of soft nanostructured arrays as advanced platforms in diverse applications.

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Track-Etch Membranes as Tools for Template Synthesis of Nano-/Microstructures and Devices

Cited by 4 publications

References 66 publications

Cross‐flow microfiltration for isolation, selective capture and release of liposarcoma extracellular vesicles

Cross‐flow microfiltration for isolation, selective capture and release of liposarcoma extracellular vesicles

Preparation of Poly(Ethylene Terephthalate) Track-Etched Membranes for the Separation of Water-Oil Emulsions

Capillary-Assisted Assembly of Soft Conductive Polymer Nanopillar/Tube Arrays and Applications

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