Featured Research

from universities, journals, and other organizations

Invisible pattern can put a stop to counterfeit designer clothing

Date:
May 6, 2013
Source:
Chalmers University of Technology
Summary:
There is now a way to differentiate between designer clothing and knockoffs. Researchers have produced a thread with unique optical properties, which can be used to create invisible patterns in fabrics that are only visible under polarized light.

Using invisible thread can help clothing manufacturers create a logotype that is part of the actual fabric and that only becomes visible under polarized light. The technology produces a specific optical spectrum that is very difficult for pirate manufacturers to copy.
Credit: Christian Müller

There is now a way to differentiate between designer clothing and knockoffs. Chalmers researcher Christian Müller has produced a thread with unique optical properties, which can be used to create invisible patterns in fabrics that are only visible under polarized light.

Related Articles


According to Swedish Customs, trade in counterfeit and pirated goods has exploded the past few years in Sweden, the EU and globally. The situation impacts companies, their employees and unknowing consumers. It is often difficult to see the difference between a genuine garment and a knockoff.

Christian Müller, researcher in polymer technology at Chalmers University of Technology, has found a solution to the problem. He has created a partially invisible thread made of polyethylene and a dye molecule that absorbs visible light. The thread can be weaved into a pattern that is invisible to the naked eye, but which can be seen using a polarization filter.

"The production process itself uncomplicated," he says. "Clothing manufacturers could start using the thread right away to put a signature pattern in their garments. The equipment needed to see the pattern is fairly simple, and is already in place at Swedish Customs, for example."

The invisible thread can be created using several different dye molecules and several different synthetic fibre textiles such as nylon. The dye molecule can also be bonded to natural fibres such as wool and silk. The technology can be used both for clothes and for different types of expensive speciality fabrics such as the textile used in vehicles and caravans.

The idea is for a brand to be associated with its own special combination of textile fibres and dye molecules. The thread is easy and inexpensive for a company to produce.

"It is very difficult for pirate manufacturers to copy the unique combination," says Christian Müller. "They can obtain the equipment needed to read the pattern and ascertain the optical spectrum produced by a specific signature, but they cannot know which combination of components will produce the specific spectrum. And there are loads of different dye molecules available for use."

He published his results last year in the Applied Physics Letters scientific journal. Prior to that, it was not known that a pattern can be created in textile that is part of the actual fabric, and that is only visible under polarized light. There is, however, a similar technology available for creating invisible patterns on banknotes, which is used in Switzerland, for example.

From a long term perspective, Christian Müller's discovery could also be used to manufacture "smart textiles," such as clothing that changes colours based on electrical charge.


Story Source:

The above story is based on materials provided by Chalmers University of Technology. Note: Materials may be edited for content and length.


Journal Reference:

  1. C. Müller, M. Garriga, M. Campoy-Quiles. Patterned optical anisotropy in woven conjugated polymer systems. Applied Physics Letters, 2012; 101 (17): 171907 DOI: 10.1063/1.4764518

Cite This Page:

Chalmers University of Technology. "Invisible pattern can put a stop to counterfeit designer clothing." ScienceDaily. ScienceDaily, 6 May 2013. <www.sciencedaily.com/releases/2013/05/130506095107.htm>.
Chalmers University of Technology. (2013, May 6). Invisible pattern can put a stop to counterfeit designer clothing. ScienceDaily. Retrieved November 27, 2014 from www.sciencedaily.com/releases/2013/05/130506095107.htm
Chalmers University of Technology. "Invisible pattern can put a stop to counterfeit designer clothing." ScienceDaily. www.sciencedaily.com/releases/2013/05/130506095107.htm (accessed November 27, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

NASA's First 3-D Printer In Space Creates Its First Object

NASA's First 3-D Printer In Space Creates Its First Object

Newsy (Nov. 26, 2014) — The International Space Station is now using a proof-of-concept 3D printer to test additive printing in a weightless, isolated environment. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) — Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) — Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) — Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. 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

 

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