scholarly journals Low Temperature RF-Plasma Initiated Rapid and Highly Ordered Fracture on Ag Nanowires

2020 ◽  
Vol 10 (4) ◽  
pp. 1338
Author(s):  
Han Dai ◽  
Xinxiang Yu ◽  
Zhiguo Zhao ◽  
Dandan Shi ◽  
Xianli Shi ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Low Temperature ◽  
Radio Frequency ◽  
Plasma Treatment ◽  
Rf Plasma ◽  
Rayleigh Instability ◽  
Ag Nanowires ◽  
New Perspective ◽  
Ag Particle ◽  
Particle Chains

Highly ordered Ag particle-chains (AgPCs) have been obtained from Ag nanowires (AgNWs) by radio frequency (RF) plasma treatment. Such conversion is attributed to the fast nonequilibrium diffusion of Ag atoms (liquid-like behavior) on AgNWs surfaces through the plasma bombarding. Further, the formed AgPCs highly coincide with the predictions by Rayleigh instability. In contrast to heat treatment, AgPCs are formed rapidly, highly ordered and at temperature below 100 °C. Furthermore, aperiodicity and wire–wire welding instead of highly ordered particle-chains has been observed as the AgNWs are overlapped by plasma treatment. This work should provide a new perspective for metallic particle-chains fabrication.

Effect of Low Temperature RF Plasma Treatment on Electrical Properties of Junctionless InGaAs MOSFETs

2019 ◽  
Vol 8 (2) ◽  
pp. Q24-Q31
Author(s):  
Y. V. Gomeniuk ◽  
Y. Y. Gomeniuk ◽  
T. E. Rudenko ◽  
P. N. Okholin ◽  
V. I. Glotov ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Rf Plasma

scholarly journals Fecal Coliforms and Total Coliforms Removal in Water Using Radio-Frequency (RF) Plasma System

2015 ◽  
Vol 9 (7) ◽  
pp. 80 ◽  
Author(s):  
Reni Desmiarti ◽  
Ariadi Hazmi ◽  
Yenni Trianda
Keyword(s):  
Drinking Water ◽  
Radio Frequency ◽  
Plasma Treatment ◽  
Death Rate ◽  
Fecal Coliforms ◽  
Rf Plasma ◽  
Radio Frequency Plasma ◽  
Plasma System ◽  
Total Coliforms ◽  
Frequency Plasma

A radio-frequency plasma system (RF) was used to investigate the removal of microorganisms from water.Plasma generated by RF radiation can produce active compounds (H•, •OH, H2O2, O3, etc.) that have a highoxidation potential and can kill microorganisms present in water (fecal coliforms and total coliforms). Thefrequency of the plasma system was set to 3.0, 3.3 and 3.7 MHz and applied to river water for 60 minutes. Theresults show that in all runs, the pH of the water produced was in the range from 7.4 to 7.9. The removalefficiencies of fecal coliforms achieved were between 83.75 and 95% and were higher than the removalefficiencies of total coliforms, which were between 82.61 and 93.48%. Meanwhile, the death rate (kD) of fecalcoliforms wasfaster than that of total coliforms. Therefore, the removal of total coliforms is the key to removingmicroorganisms fromwater. RF plasma treatment can be used for treatment of drinking water to decreasemicroorganisms.

Effect of Oxygen-Radio Frequency Plasma Treatment on Three Dimensional Poly(ε-Caprolactone) Scaffolds

2007 ◽  
Author(s):  
Eda D. Yildirim ◽  
Selc¸uk Gu¨c¸eri ◽  
Wei Sun
Keyword(s):  
Surface Energy ◽  
Radio Frequency ◽  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Three Dimensional ◽  
Rf Plasma ◽  
Oxygen Plasma Treatment ◽  
Osteoblast Cell Line ◽  
Mouse Osteoblast ◽  
Effect Of Oxygen

In the present study, the effect of oxygen-based plasma treatment on the three dimensional poly (ε-caprolactone) (PCL) was analyzed in terms of surface wettability, surface energy, and surface biocompatibility. The surface treatment was carried out for 1, 3, and 5 minutes durations on three dimensional PCL scaffolds at atmospheric pressure using a radio frequency (RF) plasma treatment system. The solid surface energies of the modified and unmodified PCL scaffolds were calculated by using the Owens-Wendt’s method. To examine the effect of oxygen plasma treatment on cell-scaffold interaction, mouse osteoblast cell line (7F2) was used. Oxygen plasma treatment contributed in decreasing the hydrophobicity of PCL for the 1-min treatment. A change in the surface energy from 39.98 mN/m for untreated to 52.54 mN/m for 1-min treated was observed by the increment in the polar component of surface energy. However, with the extended treatment times (3-min, and 5 min), the hydrophilicity, and the surface energy remained unaffected. The highest mouse osteoblast cells proliferation rate was observed for the 1-minute treated sample.

scholarly journals Influence of Low-Pressure RF Plasma Treatment on Aramid Yarns Properties

Molecules ◽  
2020 ◽  
Vol 25 (15) ◽  
pp. 3476
Author(s):  
Alicja Nejman ◽  
Irena Kamińska ◽  
Izabela Jasińska ◽  
Grzegorz Celichowski ◽  
Małgorzata Cieślak
Keyword(s):  
Weight Loss ◽  
Free Energy ◽  
Radio Frequency ◽  
Plasma Treatment ◽  
Surface Free Energy ◽  
Low Pressure ◽  
Rf Plasma ◽  
Polar Component ◽  
Specific Strength ◽  
Dispersion Component

The aim of the study was to modify the surface free energy (SFE) of meta- (mAr) and para-aramid (pAr) yarns by their activation in low-pressure air radio frequency (RF) (40 kHz) plasma and assessment of its impact on the properties of the yarns. After 10 and 90 min of activation, the SFE value increased, respectively, by 14% and 37% for mAr, and by 10% and 37% for pAr. The value of the polar component increased, respectively by 22% and 57% for mAr and 20% and 62% for pAr. The value of the dispersion component for mAr and pAr increased respectively by 9% and 25%. The weight loss decreased from 49% to 46% for mAr and 62% to 50% for pAr after 90 min of activation. After 90 min, the specific strength for mAr did not change and for pAr it decreased by 40%. For both yarns, the 10 min activation in plasma is sufficient to prepare their surface for planned nanomodification.

Low-Temperature RF Plasma Treatment Effect on Junctionless Pd-Al2O3-InGaAs MISFET Operation

2018 ◽  
Vol 85 (8) ◽  
pp. 137-142
Author(s):  
Yuri V. Gomeniuk ◽  
Y Y. Gomeniuk ◽  
Pavel N Okholin ◽  
Tamara M. Nazarova ◽  
Vladimir Djara ◽  
...  
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Treatment Effect ◽  
Rf Plasma

Progress in the Manufacturing of Molded Interconnected Devices by 3D Microcontact Printing

2014 ◽  
Vol 1038 ◽  
pp. 57-60 ◽  
Author(s):  
K. Cheval ◽  
J. Coulm ◽  
S. Gout ◽  
Y. Layouni ◽  
P. Lombard ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Plasma Treatment ◽  
Protected Areas ◽  
Electroless Deposition ◽  
Microcontact Printing ◽  
Wet Etching ◽  
Rf Plasma ◽  
Direct Process ◽  
Key Points ◽  
3D Networks

The aim of this paper is to report on the use of Microcontact Printing (μCP) for the manufacturing of 3D Molded Interconnects Devices. Two different approaches are reported. A first one is based on the total metallization of the polymer, μCP of the 3D pattern followed by the wet etching of the non-protected areas of the part (the so-called indirect process). A second approach is based on the combination of radio-frequency (RF) plasma treatment, μCP of a pattern of catalysts on the polymer and metallization by electroless deposition (the so-called direct process). This second process allows metallization of bare polymer parts (free of catalytic species in the bulk) with conductive 3D networks ready for the assembly of SMD devices. Examples of MID devices made with both approaches are reported. Key points like thickness (up to 12-15 μm), conductivity and adhesion of the metallic network are also reviewed. Printing on slope surfaces is demonstrated. Advantages and drawbacks of both processes are discussed.

THE MODIFICATION OF PAPER INDUCED BY RADIO FREQUENCY AND MICROWAVE PLASMA TREATMENT

2007 ◽  
Vol 11 (4) ◽  
pp. 593-600
Author(s):  
V. V. Azharonok ◽  
I. I. Filatova ◽  
A. P. Dostanko ◽  
S. V. Bordusov ◽  
Yu. S. Shynkevich
Keyword(s):  
Radio Frequency ◽  
Plasma Treatment ◽  
Microwave Plasma
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