The Brush-Shape Device Used to Generate Atmospheric and Homogeneous Plasmas for Biomedical Applications

• Published in: Plasma processes and polymers Vol. 10; no. 1; pp. 88 - 93
• Main Authors: Song, Ying, Liu, Dongping, Wang, Wenchun, Ji, Longfei, Zhang, Qi, Ni, Weiyuan, Niu, Jinhai
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.01.2013; WILEY‐VCH Verlag; Wiley-VCH; Wiley Subscription Services, Inc
• Subjects: atmospheric cold plasma brush; Atmospherics; Brushes; Candida albicans; Devices; Exact sciences and technology; Fibers; hollow fibers; homogeneous; Medical devices; Physics; Physics of gases, plasmas and electric discharges; Physics of plasmas and electric discharges; Plasma; Plasma applications; Plasmas; Quartz; Sterilization; Studies; Plasma applications; Plasma jets; Cold plasma; Electrical properties; Homogeneous plasma; Sterilization
• ISSN: 1612-8850; 1612-8869
• DOI: 10.1002/ppap.201200042

The brush‐shape device mainly consisting of the well‐aligned and microns‐thick hollow quartz fibers can be used to generate an atmospheric and homogeneous cold plasma jet for biomedical applications. Addition of a trace amount of O2 into the feed gas greatly altered the electrical properties of the plasma jet, thus had an obvious effect on the sterilization efficiency. The uniformity of the brush‐shape plasma jet along its transverse direction was well consistent with the uniform distribution of sterilization efficiency. The atmospheric He plasma jet containing 1% O2 may kill all the Candida albicans cells with a population of 105 spores within an exposure time of 180 s. Analysis indicates that both O radicals and charged species can be an important contributor in this plasma inactivation. A special designed brush‐shape plasma device is reported to generate large area and uniform cold plasma at atmospheric pressure for biomedical application. The flexible device is consisting of well‐aligned and microns‐thick hollow quartz fibers. This homogeneous brush‐shape plasma can provide an effective mode of killing the resistant microorganism in a large scale for biomedical applications.