Featured Research

from universities, journals, and other organizations

Atmospheric pressure plasma jet from a grounded electrode

Date:
August 30, 2010
Source:
American Institute of Physics
Summary:
Because they are portable and easy to operate at ambient temperatures, cold atmospheric pressure plasma jets (APPJs) should find innovative applications in biomedicine, materials science and fabrication industries. New research investigates an APPJ that extends from the ground electrode of a circuit.

Because they are portable and easy to operate at ambient temperatures, cold atmospheric pressure plasma jets (APPJs) should find innovative applications in biomedicine, materials science and fabrication industries. Research reported in the Journal of Applied Physics investigates an APPJ that extends from the ground electrode of a circuit.

Related Articles


The researchers studied the mechanism of the jet, which differs from conventional APPJ applications that form at the active electrode.

"The ground electrode jets originate from a charge overflow and are powered by the dielectric barrier discharge between the electrodes," say authors Nan Jiang and Zexian Cao of the Beijing National Laboratory for Condensed Matters in China. "They are therefore isolated from electrical breakdown when the jet approaches an object."

This separation between the jet and active electrode, along with the ability to form a jet at lower voltages than conventional APPJs increases operator safety and opens up biomedical applications that would be dangerous otherwise.

By using narrow, transparent ground electrodes, the researchers found that the overflow jet begins to develop at the inner edge of the ground electrode, and propagates forward in the dielectric via surface microdischarge which, to the surprise of the authors, causes backstreaming of charges. The output characteristics of the jet can be tuned by adjusting the conditions of dielectric barrier discharge between the electrodes and by varying the width of the ground electrode.

"This allows a flexible, miniaturized design since it is the ground electrode that sits at the front part of the device," says Cao. Further research will strive for a detailed understanding of the processes involved in the generation of such plasma jets, for example, the interplay of charged jet with the carrier gas flow, shown in the accompanying illustration.


Story Source:

The above story is based on materials provided by American Institute of Physics. Note: Materials may be edited for content and length.


Journal Reference:

  1. Jiang et al. Atmospheric pressure plasma jets beyond ground electrode as charge overflow in a dielectric barrier discharge setup. Journal of Applied Physics, 2010; 108 (3): 033302 DOI: 10.1063/1.3466993

Cite This Page:

American Institute of Physics. "Atmospheric pressure plasma jet from a grounded electrode." ScienceDaily. ScienceDaily, 30 August 2010. <www.sciencedaily.com/releases/2010/08/100824171630.htm>.
American Institute of Physics. (2010, August 30). Atmospheric pressure plasma jet from a grounded electrode. ScienceDaily. Retrieved December 20, 2014 from www.sciencedaily.com/releases/2010/08/100824171630.htm
American Institute of Physics. "Atmospheric pressure plasma jet from a grounded electrode." ScienceDaily. www.sciencedaily.com/releases/2010/08/100824171630.htm (accessed December 20, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Saturday, December 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Building Google Into Cars

Building Google Into Cars

Reuters - Business Video Online (Dec. 19, 2014) Google's next Android version could become the standard that'll power your vehicle's entertainment and navigation features, Reuters has learned. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com
AP Review: Nikon D750 and GoPro Hero 4

AP Review: Nikon D750 and GoPro Hero 4

AP (Dec. 19, 2014) What to buy an experienced photographer or video shooter? There is some strong gear on the market from Nikon and GoPro. The AP's Ron Harris takes a closer look. (Dec. 19) Video provided by AP
Powered by NewsLook.com
Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Double-Amputee Becomes First To Move Two Prosthetic Arms With His Mind

Buzz60 (Dec. 19, 2014) A double-amputee makes history by becoming the first person to wear and operate two prosthetic arms using only his mind. Jen Markham has the story. Video provided by Buzz60
Powered by NewsLook.com
Navy Unveils Robot Fish

Navy Unveils Robot Fish

Reuters - Light News Video Online (Dec. 18, 2014) The U.S. Navy unveils an underwater device that mimics the movement of a fish. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins