Power supply for low-temperature plasma sterilization

Author(s):  
Di Zhang ◽  
Donglai Zhang ◽  
Zhiyun Bao
2012 ◽  
Vol 627 ◽  
pp. 439-443
Author(s):  
Shou Qi Wei ◽  
Jian Xiang Yang ◽  
Zhi Jie Liu

A new kind of low temperature plasma power supply used for the surface processing of fabric is introduced in this paper. According to the textile surface treatment process, a kind of stable, uniform, soft and low temperature plasma is produced. High voltage power supply use Buck DC/DC transforming circuit in the preceding stage, H bridge inverter in the backward stage. After the step-up transformer, a plasma beam is produced whose peak amplitude 20kV, rated current 100mA. But use the common power supply, some problems such as filament discharge will occurred in the process of fabric surface treatment, and this will leads fabric perforation and injury problems. So this power supply using advanced computer control technology to realize the automatic adjustment, and this improves the reliability of the power supply. The application of the technology of plasma high frequency high voltage power supply in textile materials in the practical application results shows that: the power can effectively inhibits filament discharge, even if the filament discharge occurrences, the discharge energy is insufficient to cause the perforation and damage of the treatment fabric. and the performance of the textile material surface treatment is improved.


Author(s):  
Y.D. Korolev ◽  
◽  
V.O. Nekhoroshev ◽  
O.B. Frants ◽  
A.V. Bolotov ◽  
...  

2020 ◽  
Vol 90 (4) ◽  
pp. 665
Author(s):  
Е.О. Филиппова ◽  
В.И. Корепанов ◽  
В.Ф. Пичугин

Information is given on the effect of plasma surface modification and sterilization processes on the optical characteristics of a track membrane (TM) made of polyethylene terephthalate (PET). TMs were obtained by irradiating PET with a 40Ar + 8 ion beam and etching in a 1.5 M NaOH solution. Modification of TMs were carried out by low-temperature plasma, sterilization by autoclaving and gamma radiation. TMs from PET are characterized by a relatively low transmittance and refractive power, which is associated with the appearance of heterogeneities in the structure of PET, as well as the crystalline structure of the polymer. Exposure to plasma and sterilization reduced the transmittance of TM associated with an increase in crystallinity and the formation of membrane artifacts.


2007 ◽  
Vol 2007.17 (0) ◽  
pp. 247-248
Author(s):  
Shiroh Ochiai ◽  
Takehiko Sato ◽  
Takashi Miyahaar ◽  
Akiko Doi ◽  
Takuya Urayama ◽  
...  

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