Featured Research

from universities, journals, and other organizations

New type of barcode could make counterfeiters' lives more difficult

Date:
April 16, 2014
Source:
American Chemical Society
Summary:
Counterfeiters, beware! Scientists are reporting the development of a new type of inexpensive barcode that, when added to documents or currency, could foil attempts at making forgeries. Although the tags are easy for researchers to make, they still require ingredients you can't exactly find at the local hardware store.

Counterfeiters, beware! Scientists are reporting the development of a new type of inexpensive barcode that, when added to documents or currency, could foil attempts at making forgeries. Although the tags are easy for researchers to make, they still require ingredients you can't exactly find at the local hardware store.

Related Articles


Their report appears in the Journal of the American Chemical Society.

Xiaogang Liu and colleagues explain that scientists have used fluorescent and DNA-based barcodes, or tags of known composition and sequence, in attempts to develop tests for cancer and other diseases. But their high cost and faint signal have hampered their application in security inks. One estimate states that about $220 million in counterfeit bills are currently in circulation just in the U.S., and there's no way to tell how many other "official" documents are fake. Liu's team set out to thwart counterfeiters and overcome these obstacles by using microscopic "lanthanide-doped upconversion materials." Lanthanides are a set of elements that are in a wide variety of products, including ceramics, glass and portable x-ray devices.

The team made a set of multicolor barcodes with different combinations of red, green or blue fluorescent dots on either end of a tiny lanthanide-containing microrod using an inexpensive process. They then used these microrods to produce a transparent security ink. In this format, the barcodes are easily readable with a conventional microscope fitted with a near-infrared laser, but are invisible to the naked eye. They say the materials also could find application in imaging cells from the body.

The authors acknowledge funding from the National University of Singapore, the Ministry of Education, the Singapore-MIT Alliance, and the Agency for Science, Technology and Research.


Story Source:

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


Journal Reference:

  1. Yuhai Zhang, Lixin Zhang, Renren Deng, Jing Tian, Yun Zong, Dayong Jin, Xiaogang Liu. Multicolor Barcoding in a Single Upconversion Crystal. Journal of the American Chemical Society, 2014; 136 (13): 4893 DOI: 10.1021/ja5013646

Cite This Page:

American Chemical Society. "New type of barcode could make counterfeiters' lives more difficult." ScienceDaily. ScienceDaily, 16 April 2014. <www.sciencedaily.com/releases/2014/04/140416113002.htm>.
American Chemical Society. (2014, April 16). New type of barcode could make counterfeiters' lives more difficult. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2014/04/140416113002.htm
American Chemical Society. "New type of barcode could make counterfeiters' lives more difficult." ScienceDaily. www.sciencedaily.com/releases/2014/04/140416113002.htm (accessed October 25, 2014).

Share This



More Science & Society News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Texas Nurse Nina Pham Cured of Ebola

Texas Nurse Nina Pham Cured of Ebola

AFP (Oct. 25, 2014) An American nurse who contracted Ebola while caring for a Liberian patient in Texas has been declared free of the virus and will leave the hospital. Duration: 01:01 Video provided by AFP
Powered by NewsLook.com
Ebola Protective Suits Being Made in China

Ebola Protective Suits Being Made in China

AFP (Oct. 24, 2014) A factory in China is busy making Ebola protective suits for healthcare workers and others fighting the spread of the virus. Duration: 00:38 Video provided by AFP
Powered by NewsLook.com
WHO: Millions of Ebola Vaccine Doses by 2015

WHO: Millions of Ebola Vaccine Doses by 2015

AP (Oct. 24, 2014) The World Health Organization said on Friday that millions of doses of two experimental Ebola vaccines could be ready for use in 2015 and five more experimental vaccines would start being tested in March. (Oct. 24) Video provided by AP
Powered by NewsLook.com
Microsoft Riding High On Strong Surface, Cloud Performance

Microsoft Riding High On Strong Surface, Cloud Performance

Newsy (Oct. 24, 2014) Microsoft's Q3 earnings showed its tablets and cloud services are really hitting their stride. Video provided by Newsy
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


Science & Society

Business & Industry

Education & Learning

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