Surface Hydrophilization of Polyimide Films Using Atmospheric Damage-Free Multigas Plasma Jet Source

Takamatsu, Takeichiro; Hirai, Hideyuki; Sasaki, Ryota; Miyahara, Hidekazu; Okino, Akitoshi

doi:10.1109/tps.2012.2227459

Cited by 50 publications

(39 citation statements)

References 26 publications

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“…Its potential applications, such as material surface hydrophilization, 24 gas chromatography detection, 25 sterilization, 26 and ambient desorption/ionization mass spectrometry, 27,28 have been studied. Here, microplasma was utilized as an excitation source for droplet sample analysis.…”

mentioning

confidence: 99%

A pulse-synchronized microplasma atomic emission spectroscopy system for ultrasmall sample analysis

Iwai

Okumura

Kakegawa

et al. 2014

J. Anal. At. Spectrom.

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Regenerative medicine and environmental science require the analysis of ultrasmall samples such as cells and nanoparticles. Therefore, a microplasma atomic emission spectroscopy (AES) system was developed in this study. This system combined microdroplet injection, which can introduce a small droplet of a few tens of picoliters into a plasma excitation/ionization source, with a microhollow cathode plasma source exhibiting a volume of a few microliters. When a 14 pL droplet of 100 mg L À1 sodium solution was introduced into an 8 W DC microplasma, no emission was observed possibly because of an insufficient excitation of the sample at low plasma gas temperature. Therefore, a pulsed discharge, producing highintensity electric input power, was implemented to give a pulse-synchronized microplasma AES system.A 15 ms pulsed power reaching a maximum value of 100 kW was obtained using a laboratory-built highintensity pulsed power supply and was applied to generate the plasma. This system achieved an excitation temperature of 7000 K, exceeding that of the common inductively coupled plasma. Pulsed plasma generation and sample droplet introduction into the plasma were synchronized to provide a high-sensitivity AES analysis. To this end, the time interval before the end of the generation and the beginning of the pulsed plasma generation was adjusted using a delay circuit. The optimal delay amounted to 40 ms. A droplet comprising Na, Ca, Mg, and K at 100 mg L À1 was analyzed using this system and the limits of detection equaled 300, 50, 30, and 640 fg for these analytes, respectively.

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mentioning

confidence: 99%

A pulse-synchronized microplasma atomic emission spectroscopy system for ultrasmall sample analysis

Iwai

Okumura

Kakegawa

et al. 2014

J. Anal. At. Spectrom.

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“…16 Thus, hydrogen was added to the damage-free plasma, and the plasma was irradiated onto sample materials. Subsequently, the plasma gas was analyzed by ICP-MS, as described above.…”

Section: Sampling Using Chemical Reactionsmentioning

confidence: 99%

Development of the Atmospheric Plasma Soft-Ablation Method (APSA) for Elemental Analysis of Materials on Heat-sensitive Substrates

et al. 2013

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To achieve a highly sensitive and prompt elemental analysis of materials on heat-sensitive substrates, like living tissues, the atmospheric plasma soft-ablation method (APSA) was developed. The damage-free plasma, which has room temperature and no risk of electrical shock, was used as a sampling medium for materials, and the sampled materials were introduced to inductively coupled plasma mass spectrometer (ICP-MS). By using APSA, a mass signal of molybdenum, using a thin molybdenum-grease layer, was successfully obtained without damaging the subjacent glass substrate. The use of a hydrogen admixture to generate the plasma was examined in order to achieve more effective sampling by utilizing chemical reactions between radicals in the plasma and the sample material. As a result, the sensitivity of all measured elements contained in tablet supplements increased by up to 20 times upon the addition of 1% hydrogen, even though the plasma-gas temperature did not change significantly.

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“…Owing to the selectivity of energy, nonequilibrium plasma jet reactors also allow efficient physicochemical reactions to be carried out at relatively low gas temperatures, which do not cause changes in the bulk material. (2)(3)(4)(5)(11)(12)(13)(14)(15) In this article,…”

Section: Introductionmentioning

confidence: 99%

Impact of Radio-frequency Atmospheric-pressure Plasma on Water Contact Angles of High-impact Polystyrene

2018

Sensors and Materials

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For some applications of plastic materials, such as polystyrene, an important role is played by the wettability of the material. One of the methods of modifying material properties such as water contact angle is using nonthermal plasma. In this study, a radio-frequency atmospheric -pressure plasma jet source has been applied to the surface modification of a high-impact polystyrene film. The measurements show a dependence between the change in the water contact angle and the operating parameters of a nonequilibrium plasma treatment, such as the composition of the working gas, the flow rate, the distance from the plasma zone, and the discharge power.

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Surface Hydrophilization of Polyimide Films Using Atmospheric Damage-Free Multigas Plasma Jet Source

Cited by 50 publications

References 26 publications

A pulse-synchronized microplasma atomic emission spectroscopy system for ultrasmall sample analysis

A pulse-synchronized microplasma atomic emission spectroscopy system for ultrasmall sample analysis

Development of the Atmospheric Plasma Soft-Ablation Method (APSA) for Elemental Analysis of Materials on Heat-sensitive Substrates

Impact of Radio-frequency Atmospheric-pressure Plasma on Water Contact Angles of High-impact Polystyrene

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