Featured Research

from universities, journals, and other organizations

Nanowire 'Barcode' System Speeds Up Bio Detection In The Field

Date:
August 8, 2006
Source:
Lawrence Livermore National Laboratory
Summary:
Detecting biowarfare agents in the field will become a lot easier thanks to a new barcode system based on biosensing nanowires developed by Lawrence Livermore National Laboratory researchers.

Multi-striped nanowires developed at LLNL allow rapid and sensitive immunoassays for biowarfare agent simulants.
Credit: Image courtesy of Lawrence Livermore National Laboratory

Detecting biowarfare agents in the field will become a lot easier thanks to a new barcode system based on biosensing nanowires developed by Lawrence Livermore National Laboratory (LLNL) researchers.

The researchers, led by Jeffrey Tok of LLNL’s BioSecurity and Nanosciences Laboratory, built submicrometer layers of different metals including gold, silver and nickel that act as “barcodes” for detecting a variety of pathogens ranging from anthrax, smallpox and ricin to botulinum.

The team, led by LLNL and including researchers from Stanford University, the UC-Davis Center for Biophotonics and Nanoplex Technologies, used the multi-striped metallic nanowires in a suspended format to rapidly identify sensitive single and multiplex immunoassays that simulated biowarfare agents.

The researchers produced nanoscale wires by electrochemically depositing metals within the tiny cavities of porous mineral solids. They then layered the gold and silver in a specific way to produce nanowires with different characteristic stripe patterns depending on which pathogen they were trying to identify.

The reflection pattern and fluorescence from each stripe sequence can later be clearly recognized, similar to a barcode on a retail product.

“Antibodies of specific pathogens have been attached to the wires,” said Jeffrey Tok, principal author from LLNL. “This produces a small, reliable, sensitive detection system that can easily be taken into the field.”

The system not only applies to biowarfare agents, but could also be used during an outbreak of an infectious disease.

The research appears online in the journal Angewandte Chemie.

Founded in 1952, Lawrence Livermore National Laboratory has a mission to ensure national security and apply science and technology to the important issues of our time. Lawrence Livermore National Laboratory is managed by the University of California for the U.S. Department of Energy’s National Nuclear Security Administration.


Story Source:

The above story is based on materials provided by Lawrence Livermore National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

Lawrence Livermore National Laboratory. "Nanowire 'Barcode' System Speeds Up Bio Detection In The Field." ScienceDaily. ScienceDaily, 8 August 2006. <www.sciencedaily.com/releases/2006/08/060808161332.htm>.
Lawrence Livermore National Laboratory. (2006, August 8). Nanowire 'Barcode' System Speeds Up Bio Detection In The Field. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2006/08/060808161332.htm
Lawrence Livermore National Laboratory. "Nanowire 'Barcode' System Speeds Up Bio Detection In The Field." ScienceDaily. www.sciencedaily.com/releases/2006/08/060808161332.htm (accessed July 28, 2014).

Share This




More Matter & Energy News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Lithium Battery 'Holy Grail' Could Provide 4 Times The Power

Lithium Battery 'Holy Grail' Could Provide 4 Times The Power

Newsy (July 28, 2014) Stanford University published its findings for a "pure" lithium ion battery that could have our everyday devices and electric cars running longer. Video provided by Newsy
Powered by NewsLook.com
The Carbon Trap: US Exports Global Warming

The Carbon Trap: US Exports Global Warming

AP (July 28, 2014) AP Investigation: As the Obama administration weans the country off dirty fuels, energy companies are ramping-up overseas coal exports at a heavy price. (July 28) Video provided by AP
Powered by NewsLook.com
Shipping Crates Get New 'lease' On Life

Shipping Crates Get New 'lease' On Life

Reuters - Business Video Online (July 25, 2014) Shipping containers have been piling up as America imports more than it exports. Some university students in Washington D.C. are set to get a first-hand lesson in recycling. Their housing is being built using refashioned shipping containers. Lily Jamali reports. Video provided by Reuters
Powered by NewsLook.com
Europe's Highest Train Turns 80 in French Pyrenees

Europe's Highest Train Turns 80 in French Pyrenees

AFP (July 25, 2014) Europe's highest train, the little train of Artouste in the French Pyrenees, celebrates its 80th birthday. Duration: 01:05 Video provided by AFP
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:
from the past week

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