Effect of proton and ion beam treatment on cyclic olefin copolymer parts prepared via injection molding

Song, Young Seok; Lim, Eunju

doi:10.1016/j.cap.2019.01.004

Cited by 3 publications

(5 citation statements)

References 23 publications

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“…In Figure 9b, the current difference at a voltage of 5 V was replotted and analyzed according to the type of ion beam irradiation. The difference in surface resistances in the To enhance the surface properties, the composites were irradiated with a nitrogen gas ion beam and a chromium metal ion beam [31]. Figure 7 shows the penetration depth calculated through the SRIM simulation [32].…”

Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of Aluminum Nanoparticle-Reinforced Composites

2020

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With the expanding use of polymers in modern our lives, there is an increasing need to manufacture advanced engineering polymeric parts in a systematic and inexpensive way. Herein, we developed an organic inorganic hybrid composite material with excellent mechanical properties by enhancing the dispersion and moldability of fillers. For this, we prepared and analyzed the physical properties of acrylonitrile butadiene styrene (ABS)/aluminum nanoparticle composites. Al nanoparticles of various sizes (20 nm and 40 nm) and concentrations (3, 6, 9, and 12 wt.%) were employed. The mechanical properties of the prepared composites were measured using a universal testing machine. Rheological and thermal analyses for the composites were carried out with use of a rheometer and a differential thermal calorimeter (DSC). We also conducted optical, chemical, electrical, and morphological property studies of the samples in order to help design and produce high-performance engineering products.

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Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of Aluminum Nanoparticle-Reinforced Composites

2020

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“…This color shift can be attributed to the generation of color-sensitive conjugated bonds, which subsequently leads to an increase in ion absorption. [77] The decrease in transmittance can be caused by the alteration of the chemical structure by chain scission and the generation of free radicals, potentially leading to the development of molecular cross-links, and in the case of higher fluences, even increased carbonization. [62,77] We also tried to determine if the ion modification affected the surface profile of polymers (Figure 2B).…”

Section: Surface Morphologymentioning

confidence: 99%

“…[77] The decrease in transmittance can be caused by the alteration of the chemical structure by chain scission and the generation of free radicals, potentially leading to the development of molecular cross-links, and in the case of higher fluences, even increased carbonization. [62,77] We also tried to determine if the ion modification affected the surface profile of polymers (Figure 2B). In the areas of the modification, we were able to measure polymer compaction of ≈200 nm in depth for both TOPAS foils and all ion types.…”

Section: Surface Morphologymentioning

confidence: 99%

“…The minimal differences in carbon-oxygen ratio between fluences of 3.75 × 10 13 and 10 14 cm −2 together with the coloring of the patterned areas, might suggest increased carbonization of the material. [62,77] This effect could be responsible for the negligible difference between ion fluences, and therefore, a further increase in ion fluence will probably not affect the increase in oxygen content. We also did not detect any other elements, particularly nitrogen, in the spectra.…”

Section: Surface Chemical Compositionmentioning

confidence: 99%

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Patterning of COC Polymers by Middle‐Energy Ion Beams for Selective Cell Adhesion in Microfluidic Devices

Aubrecht,

Malinský,

Novák

et al. 2024

Adv Materials Inter

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Microfluidic devices play a crucial role in advanced cell biology applications, including cell separations, cultivations, migration and interaction studies, diagnostic devices, and organ‐on‐chips. One of the frequent purposes of such devices is the ability to selectively address the attachment of cells at defined locations on the surface. This study explores the application of middle‐energy carbon, oxygen, and nitrogen ions to locally modify the surface of cyclic olefin copolymer (COC) thermoplastic material, allowing selective cell growth on patterned polymer surfaces. The investigation considers ion element type, ion beam energy, and ion irradiation fluence, analyzing their influence on the modification effect. Characterization of the modified surfaces involves various surface‐analytical methods such as contact angle, energy dispersive spectroscopy (SEM‐EDX), atomic force microscopy (AFM), x‐ray photoelectron spectroscopy (XPS), rutherford backscattering spectrometry (RBS), and elastic recoil detection analysis (ERDA). The study extends to practical aspects, with a representative cancer cell line, MCF‐7, grown on the patterned surface to evaluate the degree of selective attachment. Additionally, the stability of the irradiated patterns is tested under elevated temperatures beyond the glass transition temperature (Tg), demonstrating the compatibility of the approach with hot embossing technology. The findings underscore the potential of ion beam treatment for COC in cell‐biology‐related applications, offering insights into surface modification techniques for enhanced functionality in microfluidic devices.

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“…Au electrodes with a thickness of 100 nm were fabricated on the top and bottom of the carbonized film using a thermal evaporator under high pressure. The current-voltage (I-V) measurement was performed in the way same as in our previous studies using a semiconductor parameter analyzer (HP 4155 A) [27][28][29]. For the measurement, a voltage was applied from +5 V to −5 V, and a hold time of 0.1 sec was employed.…”

Section: Measurementsmentioning

confidence: 99%

Carrier transport of all carbonized β-glucosic eco-materials

Lim¹,

Ahn²,

Song³

2020

Nanotechnology

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Attempts have been made to bring eco-friendly biomaterials into high-end electronic devices that require both high performance and durability. Polysaccharides, glycosidically linked monosaccharide units, are of particular interest because they serve as a promising material, owing to their environmentally friendly and adaptable features. We used a carbonized polysaccharide eco-material encompassing nanoparticles and chitosan to study the carrier-transport behavior of β-glucosic materials. Chitosan composites incorporating nanoparticles were prepared and then carbonized to control the crystal structure of the material. Three kinds of metal-insulator-metal devices were fabricated using carbonized materials, and their carrier-transport properties were analyzed. The results showed that the addition of cellulose nano-whiskers (CNWs) into chitosan leads to a more ordered carbon structure, increasing the charge transport in the carbonized material. We anticipate that carbonizing nanoparticle dispersed green composites provides a new pathway for the development of sustainable and environmentally benign material systems.

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Effect of proton and ion beam treatment on cyclic olefin copolymer parts prepared via injection molding

Cited by 3 publications

References 23 publications

Fabrication and Characterization of Aluminum Nanoparticle-Reinforced Composites

Fabrication and Characterization of Aluminum Nanoparticle-Reinforced Composites

Patterning of COC Polymers by Middle‐Energy Ion Beams for Selective Cell Adhesion in Microfluidic Devices

Carrier transport of all carbonized β-glucosic eco-materials

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