banner
You are not using a standards compliant browser. Because of this you may notice minor glitches in the rendering of this page. Please upgrade to a compliant browser for optimal viewing:
Firefox
Internet Explorer 7
Safari (Mac and PC)
Featured Article
Imaging method for eye disease used to eye art forgeries

The oil painting on the left fluoresces to reveal hidden details (right) when exposed to a new noninvasive imaging technique that uses ultraviolet light. Credit: Waldemar Grzesik, Institute for the Study, Restoration and Conservation of Cultural Heritage, Nicolaus Copernicus University
Wednesday, February 3, 2010

Scientists in Poland are describing how a medical imaging technique has taken on a second life in revealing forgery of an artist's signature and changes in inscriptions on paintings that are hundreds of years old. A report on the technique, called optical coherence tomography (OCT), is in ACS' Accounts of Chemical Research, a monthly journal.

Piotr Targowski notes that easel paintings prepared according to traditional techniques consist of multiple layers. The artist, for instance, first applies a glue sizing over the canvas to ensure proper adhesion of later layers. Those layers may include an outline of the painting, the painting itself, layers of semitransparent glazes, and finally transparent varnish. Art conservators and other experts resort to a variety of technologies to see below the surface and detect changes, including forged signatures and other alterations in a painting. But those approaches may damage artistic treasures or not be sensitive enough to detect finer details.

The scientists describe how OCT, used to produce three-dimensional images of the layers of the retina of the eye, overcomes those difficulties. They used OCT to analyze two oil paintings from the 18th and 19th centuries. In one, "Saint Leonard of Porto Maurizio," OCT revealed evidence that the inscription "St. Leonard" was added approximately fifty years after completion of the painting. In the other, "Portrait of an unknown woman," OCT found evidence of the possible of forgery of the artist's signature.

###

American Chemical Society: http://www.acs.org
Thanks to American Chemical Society for this article.
This article has been viewed 267 time(s).
Share This Story
News Comments
No comments recorded.
Add Comment?
-

Members do not need to provide an address
Select Comment Validation Method
Member
Name/URL (Guest)
Member Commenting:
Make your LabSpaces comments count. Start earning LabSpaces points by becoming a member!. Learn more.
Please verify that you are human: Register for LabSpaces
Rate Article
Total votes: 0
More Technology
Miniature auto differential helps tiny aerial robots stay aloft

Engineers at Harvard University have created a millionth-scale automobile differential to govern the flight of minuscule aerial robots that could someday be used to probe environmental hazards, forest fires, and other places too perilous for people.

Source: Harvard University | Views: 91 | Comments: 0
Researchers create new class of piezoelectric logic devices using zinc oxide nanowires

Researchers at the Georgia Institute of Technology have developed a new class of electronic logic device in which current is switched by an electric field generated by the application of mechanical strain to zinc oxide nanowires.

Source: Georgia Institute of Technology Research News | Views: 94 | Comments: 0
Text messages reveal the emotional timeline of September 11, 2001

The terrorist attacks of September 11, 2001 have been called the defining moment of our time. Thousands of people died and the attacks had huge individual and collective consequences, including two wars. But less is known about the immediate emotional reactions to the attacks.

Source: Association for Psychological Science | Views: 123 | Comments: 0
Computer scientists leverage dark silicon to improve smartphone battery life

A new smartphone chip prototype under development at the University of California, San Diego will improve smartphone efficiency by making use of "dark silicon" – the underused transistors in modern microprocessors. On August 23, UC San Diego computer scientists presented GreenDroid, the new smartphone chip prototype at the HotChips symposium in Palo Alto, CA.

Source: University of California - San Diego | Views: 155 | Comments: 0
The impact of new media and technology on customer relationships

A new media marketing world increasingly dominated by mobile technologies, "shopping bots," recommendation systems and peer-to-peer networks has spawned a radical new online marketplace, challenging the old behaviors of buyers and sellers, according to a new report in the Journal of Service Research.

Source: Boston College | Views: 175 | Comments: 0
High-speed filter uses electrified nanostructures to purify water at low cost

By dipping plain cotton cloth in a high-tech broth full of silver nanowires and carbon nanotubes, Stanford researchers have developed a new high-speed, low-cost filter that could easily be implemented to purify water in the developing world.

Source: Stanford University | Views: 158 | Comments: 0
Vulnerability in commercial quanto cryptography

The Norwegian University of Science and Technology (NTNU) and the University of Erlangen-Nürnberg together with the Max Planck Institute for the Science of Light in Erlangen have recently developed and tested a technique exploiting imperfections in quantum cryptography systems to implement an attack.

Source: Norwegian University of Science and Technology | Views: 195 | Comments: 0
3-D movies via Internet and satellite

Blockbusters like Avatar, UP or Toy Story 3 will bring the 3-D into home living rooms, televisions and computers. There are already displays available and the new Blu-Ray players can already play 3-dimensional movies based on MVC.

Source: Fraunhofer-Gesellschaft | Views: 279 | Comments: 0
Friends

CrimsonBase